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Icom Ic f121 Display

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Icom basic service manual

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Page 1: Icom Ic f121 Display

VHF TRANSCEIVER

iF110iF111iF121

SERVICEMANUAL

Page 2: Icom Ic f121 Display

INTRODUCTION

This service manual describes the latest service informationfor the IC-F110, F111 and F121 VHF TRANSCEIVER at thetime of publication.

DANGER

NEVER connect the transceiver to an AC outlet or to a DCpower supply that uses more than 16 V. This will ruin thetransceiver.

DO NOT expose the transceiver to rain, snow or any liquids.

DO NOT reverse the polarities of the power supply whenconnecting the transceiver.

DO NOT apply an RF signal of more than 20 dBm (100 mW)to the antenna connector. This could damage the transceiv-er’s front end.

ORDERING PARTS

Be sure to include the following four points when orderingreplacement parts:

1. 10-digit order numbers2. Component part number and name3. Equipment model name and unit name4. Quantity required

<SAMPLE ORDER>

1110003490 S.IC TA31136FN IC-F110 MAIN UNIT 5 pieces

8810009990 Screw PH BT M3×8 ZKIC-F110 Bottom cover 10 pieces

Addresses are provided on the inside back cover for yourconvenience.

REPAIR NOTES

1. Make sure a problem is internal before disassembling thetransceiver.

2. DO NOT open the transceiver until the transceiver is disconnected from its power source.

3. DO NOT force any of the variable components. Turnthem slowly and smoothly.

4. DO NOT short any circuits or electronic parts. An insu-lated tuning tool MUST be used for all adjustments.

5. DO NOT keep power ON for a long time when the trans-ceiver is defective.

6. DO NOT transmit power into a signal generator or asweep generator.

7. ALWAYS connect a 40 dB to 50 dB attenuator betweenthe transceiver and a deviation meter or spectrum ana-lyzer when using such test equipment.

8. READ the instructions of test equipment thoroughlybefore connecting equipment to the transceiver.

To upgrade quality, any electrical or mechanical parts andinternal circuits are subject to change without notice orobligation.

MODEL

IC-F110

IC-F111

IC-F121

VERSION

Europe

General

General

U.S.A.

SYMBOL

EUR

GEN

GEN

USA

Page 3: Icom Ic f121 Display

TABLE OF CONTENTS

SECTION 1 SPECIFICATIONS

SECTION 2 INSIDE VIEW

SECTION 3 DISASSEMBLY INSTRUCTIONS

SECTION 4 CIRCUIT DESCRIPTION

4 - 1 RECEIVER CIRCUITS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4 - 1

4 - 2 TRANSMITTER CIRCUITS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4 - 2

4 - 3 PLL CIRCUITS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4 - 3

4 - 4 POWER SUPPLY CIRCUITS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4 - 4

4 - 5 PORT ALLOCATIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4 - 4

SECTION 5 ADJUSTMENT PROCEDURES

5 - 1 PREPARATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5 - 1

5 - 2 PLL ADJUSTMENT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5 - 4

5 - 3 SOFTWARE ADJUSTMENT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5 - 5

5 - 4 TRIMMER ADJUSTMENT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5 - 7

SECTION 6 PARTS LIST

SECTION 7 MECHANICAL PARTS AND DISASSEMBLY

SECTION 8 SEMI-CONDUCTOR INFORMATION

SECTION 9 BOARD LAYOUTS

9 - 1 FRONT UNIT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 - 1

9 - 2 MAIN UNIT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9 - 3

SECTION 10 BLOCK DIAGRAM

SECTION 11 VOLTAGE DIAGRAMS

11 - 1 FRONT UNIT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 - 1

11 - 2 MAIN UNIT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11 - 2

EXPLICIT DEFINITIONS

136 – 174 MHz

FREQUENCY COVERAGE CHANNEL SPACING

Narrow/Wide-type

Narrow/Middle-type

12.5 kHz/ 25.0 kHz

12.5 kHz/ 20.0 kHz

15.0 kHz/ 30.0 kHz

Page 4: Icom Ic f121 Display

1 - 1

SECTION 1 SPECIFICATIONS

All stated specifications are subject to change without notice or obligation.

Measurement method

Frequency coverage

Type of emission

Number of conventional channels

Antenna impedance

Power supply voltage (negative ground)

Current drain (approx.)

Usable temperature range

Dimensions (proj. not included)

Weight

RF output power

Modulation system

Maximum permissible deviation

Frequency error

Spurious emissions

Adjacent channel power

Audio frequency response

Audio hormonic distortion

FM hum and noise (typical)(without CCICT filter)

Residual modulation (typical)(with CCICT filter)

Limitting charact of modulator

Microphone connector

Receive system

Intermediate frequencies

Sensitivity (typical)

Squelch sensitivity (at threshold)

Hum and noise

Adjcent channel selectivity

Spurious response

Intermoduration

Audio output power

External SP connector

[GEN], [USA] [EUR]

RE

CE

IVE

RT

RA

NS

MIT

TE

RG

EN

ER

AL

EIA-152-C/204D or TIA-603 ETS 300 086

136.000–174.000 MHz

N/W: (12.5 kHz; Narrow/25 kHz; Wide): 8K50F3E/16K0F3E [EUR](12.5 kHz; Narrow/25 kHz; Wide): 11K0F3E/16K0F3E [GEN](15 kHz; Narrow/30 kHz; Wide): 11K0F3E/16K0F3E [USA]

N/M (12.5 kHz; Narrow/20 kHz; Middle): 8K50F3E/14K0F3E [EUR]

maximum 128 channels

50 Ω nominal (SO-239)

13.6 V DC nominal 13.2 V DC nominal

TX; 7.0 A (at 25 W), 14.0 A (at 50 W)Rx; 1200 mA (maximum audio)

300 mA (stand-by)

–30˚C to +60˚C (–22˚F to +140˚F) –25˚C to +55˚C

150(W) × 40(H) × 117.5(D) mm; 529⁄32(W) × 49⁄16(H) × 45⁄8(D) inch [25 W]150(W) × 40(H) × 167.5(D) mm; 529⁄32(W) × 49⁄16(H) × 619⁄32(D) inch [50 W]

0.8 kg; 1 lb 12 oz [25 W], 1.1 kg; 2 lb 7 oz [50 W]

High/Low2/Low1: 25 W/10 W/2.5 W [25 W]High/Low2/Low1: 50 W/25 W/5 W [50 W]

Variable reactance frequency modulation

±2.5 kHz [Narrow], ±4.0 kHz [Middle], ±5.0 kHz [Wide]

±5.0 ppm ±1.5 kHz

70 dB (typical) 0.25 µW ≤ 1GHz, 1.0 µW > 1 GHz

60 dB minimum [Narrow]; 70 dB minimum [Middle], [Wide]

+2 dB to –5 dB of 6 dB/octaveRange from 300 Hz to 2550 Hz [Narrow] / 3000 Hz [Middle], [Wide]

3% typical at 1 kHz (40% deviation)

34 dB (min.), 40 dB (typ.) [Narrow]—40 dB (min.), 46 dB (typ.) [Wide]

40 dB (min.), 50 dB (typ.) [Narrow]– 43 dB (min.), 53 dB (typ.) [Middle]

45 dB (min.), 55 dB (typ.) [Wide]

70 – 100% of maximum deviation

8-pin modular (600 Ω)

Double-conversion superheterodyne system

1st: 46.35 MHz, 2nd: 450 kHz

0.25 µV typical at 12 dB SINAD –4 dBµV (emf) typical at 20 dB SINAD

0.25 µV typical –4 dBµV (emf) typical

34 dB (min.), 40 dB (typ.) [Narrow]40 dB (min.), 50 dB (typ.) [Narrow]

40 dB (min.), 45 dB (typ.) [Wide]43 dB (min.), 53 dB (typ.) [Middle]45 dB (min.), 55 dB (typ.) [Wide]

60 dB (min.), 65 dB (typ.) [Narrow]70 dB (min.), 75 dB (typ.) [Middle]/[Wide]

75 dB

70 dB (min.), 74 dB (typ.) 65 dB (min.), 67 dB (typ.)

4 W typical at 10% distortion with a 4 Ω load

2-conductor 3.5 (d) mm (1⁄8")/4 Ω

Page 5: Icom Ic f121 Display

2 - 1

SECTION 2 INSIDE VIEW

Antenna switch/Low-pass filter circuit

Mixer*(Q3: 3SK299)2nd IF filter*(FI2: ALFYM450F=K)

D/A converter*(IC6: M62363FP-650C)

IF IC(IC1: TA31136FN)

1st IF filter(FI1: FL-335)

* Located under side of the point.

Final FET module(IC3: S-AV33)

CPU 5V regurator*(IC10: AN78L05M)

8V regurator(IC9: TA7808F)

VCO circuit

AF amplifier(IC8: LA4425A)

Reference crystal oscillator*(X2: CR-740 15.3 MHz)

PLL IC(IC4: MB15A02PFV-1)

Page 6: Icom Ic f121 Display

3 - 1

SECTION 3 DISASSEMBLY INSTRUCTIONS

• Opening case➀ Unscrew 4 screws A, and remove the bottom cover.

➁ Disconnect the flat cable B from J2.

➂ Disconnect the cable C from J7.

➃ Unscrew 2 screws D, and remove the front unit.

B

C

D

A

J2

J7

➄ Unscrew 8 screws E.

➅ Remove the filter case F.

➆ Unscrew the screw G.

➇ Unsolder 3 points H from the antenna connector.

➈ Unsolder 4 points I from IC3.

E

F

G

H I

➉ Lift up the front portion of the main unit and remove it.

• Installation locationUT-105 SmarTrank 2 logic boardUT-108 DTMF decoder unitUT-109

Voice scrambler unitUT-110UT-111 Trunking unitOPC-617 ACC cable (for external terminal connection)

UT-105UT-108UT-109UT-110UT-111

OPC-617

J1J6

Page 7: Icom Ic f121 Display

SECTION 4 CIRCUIT DESCRIPTION

4 - 1

4-1 RECEIVER CIRCUITS4-1-1 ANTENNA SWITCHING CIRCUIT

(MAIN UNIT)The antenna switching circuit functions as a low-pass filterwhile receiving and as resonator circuit while transmitting.This circuit does not allow transmit signals to enter thereceiver circuits.

Received signals enter the antenna connector and passthrough the low-pass filters (L1–L3, C1, C2, C6–8). The fil-tered signals are then applied to the RF circuit passedthrough the λ⁄4 type antenna switching circuit (D5–D7, D48,L4, L6).

4-1-2 RF CIRCUIT (MAIN UNIT)The RF circuit amplifies signals within the range of frequen-cy coverage and filters out-of-band signals.

The signals from the antenna switching circuit pass throughthe two-stage tunable bandpass filters (D8, D4). The filteredsignals are amplified at the RF amplifier (Q2) and then enterother two-stage bandpass filters (D9, D10) to suppressunwanted signals. The filtered signals are applied to the 1stmixer circuit (Q3).

The tunable bandpass filters (D4, D8–D10) employ varactordiodes to tune the center frequency of the RF passband forwide bandwidth receiving and good image response rejec-tion. These diodes are controlled by the CPU (FRONT unit;IC1) via the D/A converter (IC6).

The gate control circuit reduces RF amplifier gain and atten-uates RF signal to keep the audio output at a constant level.

The receiver gain is determined by the voltage on the “RSSI”line from the FM IF IC (IC1, pin 12). The gate control circuit(Q1) supplies control voltage to the RF amplifier (Q2) andsets the receiver gain.

When receiving strong signals, the “RSSI” voltage increasesand the gate control voltage decreases. As the gate controlvoltage is used for the bias voltage of the RF amplifier (Q2),then the RF amplifier gain is decreased.

4-1-3 1ST MIXER AND 1ST IF CIRCUITS(MAIN UNIT)

The 1st mixer circuit converts the received signals to a fixedfrequency of the 1st IF signal with the PLL output frequency.By changing the PLL frequency, only the desired frequencywill pass through a MCF (Monolithic Crystal Filter; FI1) at thenext stage of the 1st mixer.

The RF signals from the bandpass filter are applied to the1st mixer circuit (Q3). The applied signals are mixed with the1st LO signal coming from the RX VCO circuit (Q14) to pro-duce a 46.35 MHz 1st IF signal. The 1st IF signal passesthrough a MCF (Monolithic Crystal Filter; FI1) to suppressout-of-band signals. The filtered signal is amplified at the 1stIF amplifier (Q4) and applied to the 2nd IF circuit.

4-1-4 2ND IF AND DEMODULATOR CIRCUITS(MAIN UNIT)

The 2nd mixer circuit converts the 1st IF signal to a 2nd IFsignal. A double-conversion superheterodyne systemimproves the image rejection ratio and obtains stable receiv-er gain.

The 1st IF signal from the 1st IF amplifier (Q4) is applied tothe 2nd mixer section of the FM IF IC (IC1, pin 16) and isthen mixed with the 2nd LO signal for conversion to a 450kHz 2nd IF signal.

IC1 contains the 2nd mixer, limiter amplifier, quadraturedetector, active filter and noise amplifier circuits, etc. Atripled frequency from the PLL reference oscillator is usedfor the 2nd LO signal (45.9 MHz).

The 2nd IF signal from the 2nd mixer (IC1, pin 3) passesthrough a ceramic filter (FI2) to remove unwanted hetero-dyned frequencies. It is then amplified at the limiter amplifi-er section (IC1, pin 5) and applied to the quadrature detec-tor section (IC1, pins 10, 11 and X1) to demodulate the 2ndIF signal into AF signals.

The AF signals are output from pin 9 (IC1) and are thenapplied to the AF amplifier circuit.

FI2

2nd IF filter450 kHz

Noise detector

Q34

Limiteramp.

FM detector

Activefilter

AF signals

"SQLIN" signal

5VX1 Discriminator

RSSI

Mixer

X215.3 MHz

45.9 MHz

1st IF from the IF amplifier (Q4)

"RSSI" signal to the CPU

"NOIS" signal to the CPU

8 7 5

BPF

3 2

3

161311109

IC1TA31136FN

• 2ND IF AND DEMODULATOR CIRCUIT

Page 8: Icom Ic f121 Display

4 - 2

4-1-5 AF AMPLIFIER CIRCUIT (MAIN UNIT)The AF amplifier circuit amplifies the demodulated AF sig-nals to drive a speaker.

The AF signals from the FM IF IC (IC1, pin 9) are applied tothe active filter circuit (IC16). The active filter circuit (high-pass filter) removes CTCSS or DTCS signals.

The filtered AF signals are output from pin 14 (IC16) and areapplied to the de-emphasis circuit (R117, C378) with fre-quency characteristics of –6 dB/octave, and then passedthrough the analog switch (IC14, pins 1–3) and low-pass fil-ter (IC5). The filtered signal is applied to the electronic vol-ume controller (IC6, pin 9).

The output AF signals from the electronic volume controller(IC6, pin 10) are passed through the analog switch (IC14pins 9–11) and are applied to the AF amplifier (IC15) and AFpower amplifier (IC8) to drive the speaker.

4-1-6 RECEIVER MUTE CIRCUITS(MAIN AND FRONT UNITS)

• NOISE SQUELCHThe noise squelch circuit cuts out AF signals when no RFsignals are received. By detecting noise components in theAF signals, the squelch circuit switches the AF mute switch.

Some noise components in the AF signals from the FM IF IC(IC1, pin 9) are passed through the level controller (IC6, pins1, 2). The level controlled signals are applied to the active fil-ter section in the FM IF IC (IC1, pin 8). Noise componentsabout 10 kHz are amplified and output from pin 7.

The filtered signals are converted to the pulse-type signalsat the noise detector section and output from pin 13 (NOIS).

The NOIS signal from the FM IF IC is applied to the CPU(FRONT unit; IC1, pin 53). The CPU then analyzes the noisecondition and controls the AF mute signal via “AFON” line(D44, D45) to the AF mute circuit (Q35, Q36, D29, D30).

• CTCSS AND DTCSThe tone squelch circuit detects AF signals and opens thesquelch only when receiving a signal containing a matchingsubaudible tone (CTCSS or DTCS). When tone squelch is inuse, and a signal with a mismatched or no subaudible toneis received, the tone squelch circuit mutes the AF signalseven when noise squelch is open.

A portion of the AF signals from the FM IF IC (IC1, pin 9)passes through the low-pass filter (IC16) to remove AF(voice) signals and is applied to the CTCSS or DTCSdecoder inside the CPU (FRONT unit; IC1, pin 60) via the“CDEC” line to control the AF mute switch.

4-2 TRANSMITTER CIRCUITS4-2-1 MICROPHONE AMPLIFIER CIRCUIT

(MAIN AND FRONT UNITS)The microphone amplifier circuit amplifies audio signalswithin +6 dB/octave pre-emphasis characteristics from themicrophone to a level needed for the modulation circuit.

The AF signals (MIC) from the MIC jack (FRONT unit; J1)are amplified at the AF amplifier (FRONT unit; IC5) andapplied to the MAIN unit via J2 (pin 28). The AF signal areapplied to the limiter amplifier (IC5, pin 5).

The entered signals are pre-emphasized with +6dB/octaveat a limiter amplifier, then passed through the analog switch(IC14, pins 2–4) and splatter filter (IC5, pins 2, 1). The out-put signals from the splatter filter are applied to the levelcontroller (IC6, pin 9).

The deviation level controlled signals are then applied to themodulation circuit (D18) as the “MOD” signal after beingpassed through the analog switch (IC14, pins 9, 8).

4-2-2 MODULATION CIRCUIT(MAIN AND FRONT UNITS

The modulation circuit modulates the VCO oscillating signal(RF signal) using the microphone audio signals.

The AF signals from the analog switch (IC14, pin 8) changethe reactance of varactor diode (D18) to modulate the oscil-lated signal at the TX VCO circuit (Q13, D16, D31). Themodulated VCO signal is amplified at the buffer amplifiers(Q11, Q10) and is then applied to the drive amplifier circuitvia the T/R switch (D14).

The CTCSS/DTCS signals from the CPU (FRONT unit; IC1,pins 22–24) are passed through the low-pass filter (FRONTunit; IC5), and mixer and splatter filter (IC5), and are thenapplied to the VCO circuit.

4-2-3 DRIVE AMPLIFIER CIRCUIT (MAIN UNIT)The drive amplifier circuit amplifies the VCO oscillating sig-nal to the level needed at the power amplifier.

The RF signal from the buffer amplifier (Q10) passesthrough the T/R switch (D14) and is amplified at the driveamplifier circuit (Q8). The amplified signal is applied to thepower amplifier circuit.

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4 - 3

4-2-4 POWER AMPLIFIER CIRCUIT (MAIN UNIT)The power amplifier circuit amplifies the driver signal to anoutput power level.

The RF signal from the drive amplifier (Q8) is passedthrough the low-pass filter circuit (L18, L43, C89, C90, C92,C380, C381, C510) and applied to the power module (IC3)to obtain 25 W or 50 W of RF power.

The amplified signal is passed through the antenna switch-ing circuit (D2), low-pass filter and APC detector, and is thenapplied to the antenna connector.

Control voltage for the power amplifier (IC3, pin 2) comesfrom the APC amplifier (IC2) to stabilize the output power.The transmit mute switch (D28) controls the APC amplifierwhen transmit mute is necessary.

4-2-5 APC CIRCUIT (MAIN UNIT)The APC circuit protects the power amplifier from a mis-matched output load and stabilizes the output power.

The APC detector circuit detects forward signals and reflec-tion signals at D1 and D11 respectively. The combined volt-age is at minimum level when the antenna impedance ismatched at 50 Ω, and is increased when it is mismatched.

The detected voltage is applied to the APC amplifier (IC2,pin 3), and the power setting “T2” signal from the D/A con-verter (IC6, pin 22), controlled by the CPU (FRONT unit;IC1), is applied to the other input for reference. When anten-na impedance is mismatched, the detected voltage exceedsthe power setting voltage. Then the output voltage of theAPC amplifier (IC2, pin 4) controls the input current of thedrive amplifier (Q8) and power module (IC3) to reduce theoutput power.

4-3 PLL CIRCUITS4-3-1 PLL CIRCUIT (MAIN UNIT)A PLL circuit provides stable oscillation of the transmit fre-quency and receive 1st LO frequency. The PLL output com-pares the phase of the divided VCO frequency to the refer-ence frequency. The PLL output frequency is controlled bythe divided ratio (N-data) of a programable divider.

The PLL circuit contains the TX/RX VCO circuit (Q13, Q14).The oscillated signal is amplified at the buffer amplifiers(Q11, Q12) and then applied to the PLL IC (IC4, pin 8) viathe low-pass filter (L32, C298–C300).

The PLL IC contains a prescaler, programable counter, pro-gramable divider and phase detector, etc. The entered sig-nal is divided at the prescaler and programable counter sec-tion by the N-data ratio from the CPU. The reference signalis generated at the reference oscillator (X2) and is alsoapplied to the PLL IC. The PLL IC detects the out-of-stepphase using the reference frequency, and outputs it frompin 5. The output signal is passed through the loop filter(R97/C149, R96/C147), and is then applied to the VCO cir-cuit as the lock voltage.

If the oscillated signal drifts, its phase changes from that ofthe reference frequency, causing a lock voltage change tocompensate for the drift in the oscillated frequency.

4-3-2 VCO CIRCUIT (MAIN UNIT)The VCO circuit contains a separate RX VCO (Q14, D33,D34) and TX VCO (Q13, D16, D18, D31). The oscillated sig-nal is amplified at the buffer amplifiers (Q11, Q10) and isthen applied to the T/R switch circuit (D14, D15). Then thereceive 1st LO (Rx) signal is applied to the 1st mixer (Q3)and the transmit (Tx) signal to the drive amplifier circuit (Q8).

A portion of the signal from the buffer amplifier (Q11) is fedback to the PLL IC (IC4, pin 8) via the buffer amplifier (Q12)and low-pass filter (L32, C298–C300) as the comparisonsignal.

Shift register×3

PrescalerPhasedetector

Loopfilter

Programmablecounter

Programmabledivider

X215.3 MHz

2nd LO signal to the FM IF IC 45.9 MHz

1

BufferQ11

BufferQ10

BufferQ12

Tripler9

1011

SCK

SOPLST

to transmitter circuit

to 1st mixer circuit

D14

D15

5 8

Q34

IC4 MB15A02PFV1

Q13, D18, D19, D31

TX VCO

Q14, D33, D34

RX VCO

• PLL CIRCUIT

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4 - 4

Description

The voltage from a DC power supply.

The same voltage as the HV line which is con-trolled by the power switching circuit (Q23, Q24).When the [POWER] switch is pushed, the CPUoutputs the “PWON” control signal to the powerswitching circuit to turn the circuit ON.

Common 5 V for the CPU converted from the HVline by the CPU5V regulator circuit (IC10). Thecircuit outputs the voltage regardless of thepower ON/OFF condition.

Common 8 V converted from the VCC line by the8V regulator circuit (IC9).

Common 5 V converted from the 8 V and CPU5lines by the 5V regulator circuit (Q27, Q28).

Receive 8 V controlled by the R8 regulator circuit(Q26, Q30) using the “RXC” signal from theexpander IC (IC17, pin 4).

Transmit 8 V controlled by the T8 regulator circuit(Q25, Q29, D23) using the “TMUT” signal fromthe expander IC (IC17, pin 13).

Line

HV

VCC

CPU5V

8V

5V

R8V

T8V

Input port for the internal temperature.

Input port for the low voltage detectionfrom the connected power supply.

Input port for reset signal.

Output ports for 5/2 tone and DTMFsignals.

Outputs the CPU clock shift signal.

Outputs cut-off frequency control signalto the low-pass filter (MAIN unit; IC5)for CTCSS/DTCS switching.

Input port for the key matrix.

Output ports for 5/2 tone and DTMFsignals.

Input port for the PLL unlock signalfrom the PLL IC (MAIN unit; IC4).

Input port for the key matrix.

Output ports for CTCSS/DTCS signals.

Input ports for the key matrix.

Outputs the clock signal to the PLL IC(MAIN unit; IC4), D/A converter (MAINunit; IC6), LED driver (IC4) and option-al board (connect to MAIN unit; J1).

Outputs the data signal to the PLL IC(MAIN unit; IC4), D/A converter (MAINunit; IC6) and optional board (connectto MAIN unit; J1).

Output port for beep sound signal.

I/O port for the data signal for the EEP-ROM (IC3)

Outputs the clock signal for the EEP-ROM (IC3).

Outputs the clock signal for the LCDdriver (IC6, pin 17).

Outputs the data signal for the LCD dri-ver (IC6, pin 48).

Outputs the strobe signal for the PLLIC (MAIN unit; IC4).

Outputs the strobe signal for the D/Aconverter IC (MAIN unit; IC6).

Outputs the strobe signal for theexpander IC (IC17).

Outputs the control signal for the LCDdriver IC (IC6).

Outputs the control signal for the powerswitching circuit (MAIN unit; Q24,Q23).

1

2

7

13–14

15

16

17, 18

19–20

21

22

23–25

26, 27

28

29

30

31

32

33

34

36

37

38

39

41

TEMP

BATV

RES

SENC0–SENC1

CSFT

DUSE

KS0, KS1

SENC2–SENC3

UNLK

KR0

CENO0–CENO2

KR1, KR2

SCK

SO

BEEP

ESDA

ESCL

LSCK

LSO

PLST

DAST

EXST

EXOE

PWON

Pin PortDescriptionnumber name

4-4 POWER SUPPLY CIRCUITS4-4-1 VOLTAGE LINES (MAIN UNIT)

4-5 PORT ALLOCATIONS4-5-1 CPU (FRONT UNIT; IC1)

Page 11: Icom Ic f121 Display

Outputs dimmer control signal.High: Dimmter is ON.

Outputs backlight control signal.High: Backlight is ON.

Output LCD segment signals.

Output LCD common signals.

4 - 5

I/O ports for the optional board controlsignals.

Input port for the clock sigal from theoptional board via J1.

Input port for the cloning signal.

Output port for the cloning signal.

Input port for the POWER switch.

• Input port for the remote power con-trol signal from the external connec-tor.(J6)

• Input port for the dimmer control.

Input port for the “NOIS” signal fromthe FM IF IC (MAIN unit; IC1) for noisesquelch operation.

Input port for interruption signal fromthe optional board via J1.

Outputs chip select signal for theoptional board via J1.

Input port for the PTT switch frommicrophone.

Input port for the PTT switch from theexternal connector (J6).Low : External PTT switch is ON.

Input port for the microphone hangerdetection signal.Low : Microphone on hook.

Input port for the AF volume controlsignal (R14).High : [VOL] is maximum clockwise.

Input port for the CTCSS/DTCS decod-ing signals.

Input port for the single tone decodingsignal.

Input port for the optional board detec-tion signal.

Input port for receiving signal strengthlevel detection.

Input port for the PLL lock voltage.

44–46

48

49

50

51

52

83

54

55

56

57

58

59

60

61

62

63

64

OPT3–OPT1

SI

CLI

CLO

POSW

IGSW

NOIS

CIRQ

CCS

PTT

EPTT

HANG

AFVI

CDEC

SDEC

OPV1V2

RSSI

LVIN

Pin PortDescriptionnumber name

Outputs transmit/receive control signal.High: While receiving.

Outputs audio output control signal.High: While receiving.

Outputs wide/narrow control signal.High: Wide is selected.

Outputs receiving mute control signal.Low: While receiving is muting.

Outputs transmitting mute control sig-nal.Low: While transmitting is muting.

Outputs the microphone mute controlsignal.Low: While the microphone is muting.

4

5

6

7

13

14

RXC

AFON

NWC

RMUT

TMUT

MMUT

Pin PortDescriptionnumber name

1

2

3–34

35–38

LIGT1

LIGT2

SEG32–SEG1

COM4–COM1

Pin PortDescriptionnumber name

4-5-3 LCD DRIVER (FRONT UNIT; IC6)

4-5-2 OUTPUT EXPANDER (MAIN UNIT; IC17)CPU-Continued

Page 12: Icom Ic f121 Display

5 - 1

SECTION 5 ADJUSTMENT PROCEDURES

+ Audio generator300 Hz to 3 kHz

ACmillivoltmeter

MICE

MIC

PTT

PTT switch

PTTE

Add a jumper wire here

Electrolytic capacitor47 F

OPC-1122(Cloning cable)

5-1 PREPARATIONWhen you adjust the contents on pages 5-5 and 5-6, SOFT-WARE ADJUSTMENT, the optional CS-F100 ADJ ADJUST-MENT SOFTWARE (Rev. 1.0 or later), *OPC-1122 JIG CABLE(modified OPC-1122 CLONING CABLE; see illustration below)are required.

SYSTEM REQUIREMENTS• IBM PC compatible computer with an RS-232C serial port

(38400 bps or faster).• Microsoft Windows 95/98 or Windows ME• Intel Pentium 100 MHz processor or faster• At least 16 MB RAM and 10 MB of hard disk space• 640×480 pixel display (800×600 pixel display recommend-

ed)

ADJUSTMENT SOFTWARE INSTALLATIONq Boot up Windows.

- Quit all applications when Windows is running.w Insert the ‘CS-F100’ into the appropriate CD drive.e Select ‘Run’ from the [Start] menu.r Type the setup program name using the full path name,

then push [Enter] key.(ex. D:\CSF100ADJ\Setup.exe)

t Follow the prompts.y Program group ‘CS-F100 ADJ’ appears in the ‘Programs’

folder of the [Start] menu.

STARTING SOFTWARE ADJUSTMENTq Connect IC-F110 and PC with *OPC-1122 JIG CABLE.w Turn the transceiver power ON.e Boot up Windows, and click the program group ‘CS-F100

ADJ’ in the ‘Programs’ folder of the [Start] menu, thenCS-F100 ADJ’s window appears.

r Click ‘Connect’ on the CS-F100 ADJ’s window, thenappears IC-F110’s up-to-date condition.

t Set or modify adjustment data as desired.

IBM is a registered trademark of International BussinessMachines Corporation in the U.S.A. and other countries.Microsoft and Windows are registered trademarks ofMicrosoft Corporation in the U.S.A. and other countries.Screen shots produced with permission from MicrosoftCorporation. All other products or brands are registeredtrademarks or trademarks of their respective holders.

• *OPC-1122 (JIG CABLE)

Page 13: Icom Ic f121 Display

5 - 2

Personalcomputer

to the MIC connector

to an RS-232C port

DB9 female plug

RS-232C cable(straight) *OPC-1122

(JIG CABLE)

AC millivoltmeter

Audio generator

FM deviation meter(DC measurable)

Attenuator40 dB or 50 dB

to the antenna connector

to DC cable

Standard signal generator 127 to 17 dBm(0.1 V to 32 mV)

CAUTION:DO NOT transmit while the SSG is connected to the antenna connector.

RF power meter50 / 1 50 W

DC power supply13.2 V / 15 A

Frequencycounter

• CONNECTIONS

REQUIRED TEST EQUIPMENT

EQUIPMENT

DC power supply

RF power meter(terminated type)

Frequency counter

FM deviation meter

DC voltmeter

GRADE AND RANGE

Output voltage : 13.2 V DCCurrent capacity : 15 A or more

Measuring range : 1–100 WFrequency range : 100–300 MHzImpedance : 50 ΩSWR : Less than 1.2 : 1

Frequency range : 0.1–300 MHzFrequency accuracy : ±1 ppm or betterSensitivity : 100 mV or better

Frequency range : DC–300 MHzMeasuring range : 0 to ±10 kHz

Input impedance : 50 kΩ/V DC or better

EQUIPMENT

Audio generator

Standard signal generator (SSG)

Oscilloscope

AC millivoltmeter

External speaker

Attenuator

GRADE AND RANGE

Frequency range : 300–3000 HzMeasuring range : 1–500 mV

Frequency range : 0.1–300 MHzOutput level : 0.1 µV–32 mV

(–127 to –17 dBm)

Frequency range : DC–20 MHzMeasuring range : 0.01–20 V

Measuring range : 10 mV–10 V

Input impedance : 4 ΩCapacity : 7 W or more

Power attenuation : 40 or 50 dBCapacity : 50 W or more

Page 14: Icom Ic f121 Display

5 - 3

CS-F100 ADJ Rev.1.0File

COM 1: OPEN

Option

Connect Reload (F5) Disp para

[A / D]VIN : 178 : B2h : 19.96 VTEMPS : 177 : B1h : 26.44 ’CLVIN : 176 : B0h : 3.45 VSD : 23 : 17h : 0.45 V

Power (Hi) : 198 [ # # # # # # # # # # # # # # # # # ]Power (L2) : 115 [ # # # # # # # # # ]Power (L1) : 52 [ # # # # ]

BAL W : 155 [ # # # # # # # # # # # ]BAL Ratio : 128 [ # # # # # # # # # ]

MOD W : 212 [ # # # # # # # # # # # # # # # # # ]MOD Ratio : 132 [ # # # # # # # # # ]

CTCS/DTCS : 186 [ # # # # # ]SQL : 0 [ # # # # # # # # # # # # # # # ]

BPF ALL : [Enter] to sweepBPF T1 : 21 [ # # # # # # # # # # # ] [Enter] to sweepBPF T2 : 4 [ # # # # # # # # # ] [Enter] to sweep

TXF : [Enter] to startS-Meter : [Enter] to start

[D / A]BPF T1 : 197 : 32h : 0.98 VT2/POW : 172 : 32h : 0.98 VREF : 125 : 2Dh : 0.88 VMOD BAL : 149 : 36h : 21.18 Dev : 0 : 00h : 0.00 VCTCSS : 174 : AEh : 3.41 VSQL Lev : 0 : 00h : 0.00 AGC : 255 : FFh : 5.00 V

CH No. : 01 RX Freq = 136.200000, TX Freq = < RF Power: High Mode: Wide

: Transceiver’s connection state

: Reload adjustment data

: Receive sensitivity measurement

: Connected DC voltage

: PLL lock voltage

: Operating channel select

: RF output power

: Modulation balance

NOTE:

1

5

4

6

1011

12

9

1415

16

1

2

3

4

5

6

9

10

7

8

11

12

13

: FM deviation

: CTCSS/DTCS deviation

: Squelch level

: Receive sensitivity (automatically)

: Receive sensitivity (manually)

: Reference frequency

: S-meter

: Adjustment items

14

15

16

The above values for settings are example only. Each transceiver has its own specific values for each setting.

3

2

8

7

13

• SCREEN DISPLAY EXAMPLE

Page 15: Icom Ic f121 Display

LVPLL lock voltage check point

C133PLL lock voltage adjustment for TX

C134PLL lock voltage adjustment for RX

DC power supply 13.2 V / 15 A

5 - 4

5-2 PLL ADJUSTMENT

PLL LOCKVOLTAGE

1

2

3

4

• Operating freq. : 174.000 MHz• Receiving

• Output power : Low1• Transmitting

• Operating freq. : 136.000 MHz• Receiving

• Output power : Low1• Transmitting

MAIN Connect a digital multi-meter or an oscillo-scope to the checkpoint, “LV”.

3.2 V

3.6 V

0.9–1.5 V

0.8–1.4 V

MAIN C134

C133

Verify

ADJUSTMENT ADJUSTMENT CONDITIONSUNIT LOCATION

VALUEUNIT ADJUST

MEASUREMENT ADJUSTMENT

Page 16: Icom Ic f121 Display

5 - 5

5-3 SOFTWARE ADJUSTMENTSelect an operation using [↑] / [↓] keys, then set specified value using [←] / [→] keys on the connected computer keyboard.

1

1

2

3

1

2

1

2

1

• Operating freq. : 174.000 MHz• Output power : Low1• Connect the RF power meter or 50 Ω

dummy load to the antenna connector.• Transmitting

• Operating freq. : 155.000 MHz• Output power : High• Transmitting

• Output power : Low2• Transmitting

• Output power : Low1• Transmitting

• Operating freq. : 155.000 MHz• Output power : Low1• IF bandwidth : Wide• Connect an audio generator to the [MIC]

jack through the JIG cable and set as:1.0 kHz/40 mVrms

• Set an FM deviation meter as:HPF : OFFLPF : 20 kHzDe-emphasis: OFFDetector : (P–P)/2

• Transmitting

• IF bandwidth : Narrow• Transmitting

• Set to the DTCS set channel, and push[Connect] on the Adjustment software.

• Operating freq. : 155.000 MHz• Output power : Low1• Transmitting

• IF bandwidth : Narrow• Transmitting

• Operating freq. : 155.000 MHz• Output power : Low1• IF bandwidth : Wide• CTCSS : 151.4 Hz• DTCS code : 007• Set the FM deviation meter as:

HPF : OFFLPF : 20 kHzDe-emphasis: OFFDetector : (P–P)/2

• No audio applied to the [MIC] connector.• Transmitting

REFERENCEFREQUENCY[TXF]

OUTPUTPOWER[Power (Hi)]

[Power (L2)]

[Power (L1)]

FMDEVIATION[MOD W]

[MOD Ratio]

MODULATIONBALLANCE[BAL W]

[BAL Ratio]

CTCSS/DTCSDEVIATON[CTCS/DTCS]

Rearpanel

Rearpanel

Rearpanel

Rearpanel

Rearpanel

Loosely couple a frequnecycounter to the antenna connec-tor.

Connect an RF power meter tothe antenna connector.

Connect an FM deviation meterto the antenna connectorthrough the attenuator.

Connect an FM deviation meterwith an oscilloscope to theantenna connector through anattenuator.

Connect an FM deviation meterto the antenna connectorthrough the attenuator.

174.0000 MHz

25.0 W (25 W type)50.0 W (50 W type)

10.0 W (25 W type)25.0 W (50 W type)

2.5 W (25 W type)5.0 W (50 W type)

±4.1 kHz [N/W]±3.3 kHz [N/M]

±2.1 kHz

±0.7 kHz [N/W]±0.56 kHz [N/W]

ADJUSTMENT ADJUSTMENT CONDITIONMEASUREMENT

VALUEUNIT LOCATION

Set to square wave form

Page 17: Icom Ic f121 Display

5 - 6

*The output level of the standard signal generator (SSG) is indicated as the SSG’s open circuit.

SOFTWARE ADJUSTMENT – continuedSelect an operation using [↑] / [↓] keys, then set specified value using [←] / [→] keys on the connected computer keyboard.

Minimum distortionlevel

Set “SQL level” toclose squelch.

Then set “SQL level”at the point wherethe audio signalsjust appears.

1

1

1

2

• Operating freq. : 136.000 MHz• IF bandwidth : Wide• Connect a standard signal generator to

the antenna connector and set as:Frequency : 136.000 MHzLevel : 10 µV* (–87 dBm)Modulation : 1 kHzDeviation : ±3.5 kHz [N/W]

±2.8 kHz [N/M]• Receiving

• Operating freq. : 136.000 MHz• IF bandwidth : Narrow• Connect an SSG to the antenna con-

nector and set as:Frequency : 136.000 MHzLevel : 0.2 µV* (–121 dBm)Modulation : 1 kHzDeviation : ±1.75 kHz

• Receiving

• Operating freq. : 136.000 MHz• IF bandwidth : Wide• Connect an SSG to the antenna con-

nector and set as:Frequency : 136.000 MHzLevel : 14 µV* (–84 dBm)Modulation : 1 kHzDeviation : ±3.5 kHz [N/W]

±2.8 kHz [N/M]• Receiving

• Set an SSG as:Level : 0.45 µV* (–114 dBm)

RXSENSITIVITY[BPF T1], [BPF T2]

SQUELCHLEVEL[SQL]

S-METER[S-METER](S3 LEVEL)

(S1 LEVEL)

MAIN

Rearpanel

Connect a SINAD meter with a4 Ω load to the external [SP]jack.

Connect a SINAD meter with a4 Ω load to the external [SP]jack.

ADJUSTMENT ADJUSTMENT CONDITIONMEASUREMENT

VALUEUNIT LOCATION

CONVENIENT:The BPF T1–BPF T2 can be adjusted automatically.q-1: Set the cursol to “BPF ALL” on the adjustment program and then push [ENTER] key.q-2: The connected PC tunes BPF T1, BPF T2 to peak levels.

orw-1: Set the cursol to BPF T1 or BPF T2 as desired.w-2: Push [ENTER] key to start tuning.w-3: Repeat w-1 and w-2 to perform additional BPF tuning.

• Adjusting S3 and S1’s S-meter level automatically whenpush the return key on the key board.

Page 18: Icom Ic f121 Display

5 - 7

R59Beep volume adjustment

5-4 TRIMMER ADJUSTMENT• Make this adjustment if necessary (For example, when beep sound is too loud or too soft).• BE CAREFUL!: 5-tone calling beep sound becomes loud or soft when beep volume adjusts to loud or soft.

BEEPVOLUME

1 • Operating freq. : Any• Receiving

FRONT Push any button except [POWER]switch, then verify the beep volumelevel.

FRONT R59

ADJUSTMENT ADJUSTMENT CONDITIONSUNIT LOCATION UNIT ADJUST

MEASUREMENT ADJUSTMENT

• FRONT PANEL

Page 19: Icom Ic f121 Display

[FRONT UNIT][FRONT UNIT]

IC1 1140011260 S.IC HD6433687A11FP (FX-2622A)IC2 1110005770 S.IC S-80942CNMC-G9C-T2IC3 1140008650 S.IC HN58X2464TIIC5 1110005340 S.IC NJM12902V-TE1IC6 1130009090 S.IC LC75834W

Q1 1530002850 S.TRANSISTOR 2SC4116-BL (TE85R) Q2 1590001050 S.TRANSISTOR DTC114TUA T106Q3 1590000430 S.TRANSISTOR DTC144EUA T106Q5 1590001050 S.TRANSISTOR DTC114TUA T106

D1 1790000950 S.ZENER MA8056-M (TX) D2 1790000950 S.ZENER MA8056-M (TX) D3 1790000950 S.ZENER MA8056-M (TX) D4 1790000620 S.DIODE MA77 (TX) D5 1790001250 S.DIODE MA2S111-(TX)

X1 6050009520 S.XTAL CR-520 (19.6608 MHz+)

L1 6200003640 S.COIL MLF1608E 100K-TL2 6200001980 S.COIL NL 252018T-1R0J

R7 7030009160 S.RESISTOR ERJ2GEJ 181 X (180 Ω) R8 7030009160 S.RESISTOR ERJ2GEJ 181 X (180 Ω) R9 7030005000 S.RESISTOR ERJ2GEJ 471 X (470 Ω) R11 7030009280 S.RESISTOR ERJ2GE R12 7030009140 S.RESISTOR ERJ2GEJ 272 X (2.7 kΩ) R14 7210003020 VARIABLE EVU-F2KFK1 B14 (10KB) R15 7030005120 S.RESISTOR ERJ2GEJ 102 X (1 kΩ) R16 7030005120 S.RESISTOR ERJ2GEJ 102 X (1 kΩ) R18 7030005090 S.RESISTOR ERJ2GEJ 104 X (100 kΩ) R19 7030005090 S.RESISTOR ERJ2GEJ 104 X (100 kΩ) R20 7030008300 S.RESISTOR ERJ2GEJ 184 X (180 kΩ) R21 7030005720 S.RESISTOR ERJ2GEJ 563 X (56 kΩ) R22 7030005220 S.RESISTOR ERJ2GEJ 223 X (22 kΩ) R23 7030005240 S.RESISTOR ERJ2GEJ 473 X (47 kΩ) R24 7030005240 S.RESISTOR ERJ2GEJ 473 X (47 kΩ) R25 7030005220 S.RESISTOR ERJ2GEJ 223 X (22 kΩ) R26 7030005240 S.RESISTOR ERJ2GEJ 473 X (47 kΩ) R27 7030005240 S.RESISTOR ERJ2GEJ 473 X (47 kΩ) R28 7030005040 S.RESISTOR ERJ2GEJ 472 X (4.7 kΩ) R29 7030008290 S.RESISTOR ERJ2GEJ 183 X (18 kΩ) R30 7030005110 S.RESISTOR ERJ2GEJ 224 X (220 kΩ) R31 7030005090 S.RESISTOR ERJ2GEJ 104 X (100 kΩ) R32 7030005240 S.RESISTOR ERJ2GEJ 473 X (47 kΩ) R33 7030005220 S.RESISTOR ERJ2GEJ 223 X (22 kΩ) R34 7030005220 S.RESISTOR ERJ2GEJ 223 X (22 kΩ) R35 7030005070 S.RESISTOR ERJ2GEJ 683 X (68 kΩ) R36 7030005070 S.RESISTOR ERJ2GEJ 683 X (68 kΩ) R37 7030005070 S.RESISTOR ERJ2GEJ 683 X (68 kΩ) R38 7030005070 S.RESISTOR ERJ2GEJ 683 X (68 kΩ) R39 7030005070 S.RESISTOR ERJ2GEJ 683 X (68 kΩ) R40 7030005240 S.RESISTOR ERJ2GEJ 473 X (47 kΩ) R41 7030005050 S.RESISTOR ERJ2GEJ 103 X (10 kΩ) R42 7030007350 S.RESISTOR ERJ2GEJ 393 X (39 kΩ) R43 7030005060 S.RESISTOR ERJ2GEJ 333 X (33 kΩ) R44 7030005100 S.RESISTOR ERJ2GEJ 154 X (150 kΩ) R45 7030005530 S.RESISTOR ERJ2GEJ 100 X (10 Ω) R46 7030005160 S.RESISTOR ERJ2GEJ 105 X (1 MΩ) R47 7030008010 S.RESISTOR ERJ2GEJ 123 X (12 kΩ) R48 7030008010 S.RESISTOR ERJ2GEJ 123 X (12 kΩ) R49 7030008010 S.RESISTOR ERJ2GEJ 123 X (12 kΩ) R50 7410001130 S.ARRAY EXB28V102JXR51 7030005090 S.RESISTOR ERJ2GEJ 104 X (100 kΩ) R52 7030005120 S.RESISTOR ERJ2GEJ 102 X (1 kΩ) R54 7410001130 S.ARRAY EXB28V102JXR55 7410000770 S.ARRAY EXB-V4V 102JV (1 kΩ) R56 7410001130 S.ARRAY EXB28V102JXR57 7030005160 S.RESISTOR ERJ2GEJ 105 X (1 MΩ) R58 7030005050 S.RESISTOR ERJ2GEJ 103 X (10 kΩ) R59 7310002740 S.TRIMMER RV-150 (RH03A3A14X0FC) 103

S.=Surface mount

R60 7030005090 S.RESISTOR ERJ2GEJ 104 X (100 kΩ) R65 7030005120 S.RESISTOR ERJ2GEJ 102 X (1 kΩ) R67 7030005050 S.RESISTOR ERJ2GEJ 103 X (10 kΩ) R68 7030005050 S.RESISTOR ERJ2GEJ 103 X (10 kΩ) R73 7030005050 S.RESISTOR ERJ2GEJ 103 X (10 kΩ) R74 7030005050 S.RESISTOR ERJ2GEJ 103 X (10 kΩ) R75 7030005050 S.RESISTOR ERJ2GEJ 103 X (10 kΩ) R76 7030005120 S.RESISTOR ERJ2GEJ 102 X (1 kΩ) R77 7030005030 S.RESISTOR ERJ2GEJ 152 X (1.5 kΩ) R78 7030005240 S.RESISTOR ERJ2GEJ 473 X (47 kΩ) R79 7410000770 S.ARRAY EXB-V4V 102JV (1 kΩ) R80 7030005090 S.RESISTOR ERJ2GEJ 104 X (100 kΩ) R81 7030005090 S.RESISTOR ERJ2GEJ 104 X (100 kΩ) R82 7030005090 S.RESISTOR ERJ2GEJ 104 X (100 kΩ) R83 7030005090 S.RESISTOR ERJ2GEJ 104 X (100 kΩ) R84 7030005090 S.RESISTOR ERJ2GEJ 104 X (100 kΩ) R85 7030005090 S.RESISTOR ERJ2GEJ 104 X (100 kΩ) R86 7030005090 S.RESISTOR ERJ2GEJ 104 X (100 kΩ) R87 7030005090 S.RESISTOR ERJ2GEJ 104 X (100 kΩ) R88 7030005090 S.RESISTOR ERJ2GEJ 104 X (100 kΩ) R89 7030005090 S.RESISTOR ERJ2GEJ 104 X (100 kΩ) R90 7030006610 S.RESISTOR ERJ2GEJ 394 X (390 kΩ)

C1 4030018100 S.CERAMIC ECJ0EB1H681KC2 4030017420 S.CERAMIC ECJ0EC1H470JC3 4030017420 S.CERAMIC ECJ0EC1H470JC4 4030017420 S.CERAMIC ECJ0EC1H470JC5 4030017420 S.CERAMIC ECJ0EC1H470JC6 4030017420 S.CERAMIC ECJ0EC1H470JC7 4030017420 S.CERAMIC ECJ0EC1H470JC8 4030017460 S.CERAMIC ECJ0EB1E102KC9 4030017460 S.CERAMIC ECJ0EB1E102KC10 4030017460 S.CERAMIC ECJ0EB1E102KC11 4030017420 S.CERAMIC ECJ0EC1H470JC12 4030017460 S.CERAMIC ECJ0EB1E102KC14 4030017460 S.CERAMIC ECJ0EB1E102KC15 4030016780 S.CERAMIC ECJ0EB1C153KC16 4030016930 S.CERAMIC ECJ0EB1A104KC17 4030017740 S.CERAMIC ECJ0EB1E821KC19 4030016930 S.CERAMIC ECJ0EB1A104KC20 4030018110 S.CERAMIC ECJ0EB1H272KC21 4030018240 S.CERAMIC ECJ0EB1E562KC22 4030017710 S.CERAMIC ECJ0EC1H181JC23 4030018090 S.CERAMIC ECJ0EB1C822KC24 4030017510 S.CERAMIC ECJ0EC1H680JC25 4030016790 S.CERAMIC ECJ0EB1C103KC26 4030016930 S.CERAMIC ECJ0EB1A104KC27 4030017450 S.CERAMIC ECJ0EB1E271KC28 4030016930 S.CERAMIC ECJ0EB1A104KC29 4550006050 S.TANTALUM TEMSVA 0J 106M8LC30 4030017030 S.CERAMIC ECJ0EB1A273KC31 4030017400 S.CERAMIC ECJ0EC1H220JC32 4030017640 S.CERAMIC ECJ0EC1H150JC33 4030017510 S.CERAMIC ECJ0EC1H680JC34 4030017730 S.CERAMIC ECJ0EB1E471KC35 4030016930 S.CERAMIC ECJ0EB1A104KC36 4030016930 S.CERAMIC ECJ0EB1A104KC37 4030017420 S.CERAMIC ECJ0EC1H470JC38 4030017420 S.CERAMIC ECJ0EC1H470JC41 4030017460 S.CERAMIC ECJ0EB1E102KC50 4030017420 S.CERAMIC ECJ0EC1H470JC54 4030017420 S.CERAMIC ECJ0EC1H470JC69 4030017420 S.CERAMIC ECJ0EC1H470JC74 4030017420 S.CERAMIC ECJ0EC1H470JC75 4030016930 S.CERAMIC ECJ0EB1A104KC76 4030016930 S.CERAMIC ECJ0EB1A104KC77 4030016950 S.CERAMIC ECJ0EB1A473KC78 4030017460 S.CERAMIC ECJ0EB1E102KC79 4030016930 S.CERAMIC ECJ0EB1A104KC80 4030016930 S.CERAMIC ECJ0EB1A104KC81 4030017460 S.CERAMIC ECJ0EB1E102KC82 4030017420 S.CERAMIC ECJ0EC1H470JC83 4030017420 S.CERAMIC ECJ0EC1H470JC84 4030017420 S.CERAMIC ECJ0EC1H470JC85 4030017420 S.CERAMIC ECJ0EC1H470J

6 - 1

SECTION 6 PARTS LIST

REF ORDER DESCRIPTIONNO. NO.REF ORDER DESCRIPTIONNO. NO.

A: [F110] B: [F111] and [F121] C: IC-F110 for [EUR]D: IC-F110 for [GEN] E: IC-F110 for 25 kHz F: IC-F110 for 20 kHz

Page 20: Icom Ic f121 Display

S.=Surface mount

[MAIN UNIT][FRONT UNIT]

J1 6450002210 CONNECTOR 3017-8821 <KIN>J2 6510022470 S.CONNECTOR 40FLT-SM1-TB

DS1 5040002310 S.LED SML-311YTT86DS2 5040002310 S.LED SML-311YTT86DS3 5040002310 S.LED SML-311YTT86DS4 5040002310 S.LED SML-311YTT86DS5 5040002310 S.LED SML-311YTT86DS6 5040002310 S.LED SML-311YTT86DS7 5040002310 S.LED SML-311YTT86DS8 5040002310 S.LED SML-311YTT86DS9 5040002310 S.LED SML-311YTT86DS11 5030002510 LCD L2-0607TAY

SP1 2510001220 SPEAKER C052SB500-13

W1 8900010500 CABLE OPC-1046

EP1 0910055684 PCB B 5910DEP2 8930059170 LCD CONTACT SRCN-2622-SP-N-W

IC1 1110003490 S.IC TA31136FN (D,EL) IC2 1110002750 S.IC TA75S01F (TE85R) IC3 1150002100 IC S-AV32 (I) B

1150002110 IC S-AV33 (I) AIC4 1140005990 S.IC MB15A02PFV1-G-BND-ERIC5 1110005330 S.IC NJM12904V-TE1IC6 1190000350 S.IC M62363FP-650CIC8 1110003090 IC LA4425AIC9 1180001250 S.IC TA7808F (TE16L) IC10 1180000970 S.IC AN78L05M-(E1) IC14 1130008090 S.IC BU4066BCFV-E1IC15 1110002750 S.IC TA75S01F (TE85R) IC16 1110005340 S.IC NJM12902V-TE1IC17 1130007570 S.IC BU4094BCFV-E2

Q1 1560000840 S.FET 2SK1829 (TE85R) Q2 1580000730 S.FET 3SK293 (TE85L) Q3 1580000760 S.FET 3SK299-T1 U73Q4 1530002600 S.TRANSISTOR 2SC4215-O (TE85R) Q5 1590000430 S.TRANSISTOR DTC144EUA T106Q8 1530000370 S.TRANSISTOR 2SC3356-T1BQ10 1530003310 S.TRANSISTOR 2SC5107-O (TE85R) Q11 1530003310 S.TRANSISTOR 2SC5107-O (TE85R) Q12 1530003310 S.TRANSISTOR 2SC5107-O (TE85R) Q13 1530002920 S.TRANSISTOR 2SC4226-T1 R25Q14 1530002920 S.TRANSISTOR 2SC4226-T1 R25Q15 1590001400 S.TRANSISTOR XP1214 (TX) Q16 1590000430 S.TRANSISTOR DTC144EUA T106Q17 1530002850 S.TRANSISTOR 2SC4116-BL (TE85R) Q18 1560000540 S.FET 2SK880-Y (TE85R) Q19 1530002600 S.TRANSISTOR 2SC4215-O (TE85R) Q20 1530002850 S.TRANSISTOR 2SC4116-BL (TE85R) B onlyQ23 1550000020 S.FET 2SJ377 (TE16R) Q24 1590000430 S.TRANSISTOR DTC144EUA T106Q25 1540000550 S.TRANSISTOR 2SD1664 T100QQ26 1510000920 S.TRANSISTOR 2SA1577 T106 QQ27 1510000920 S.TRANSISTOR 2SA1577 T106 QQ28 1590001190 S.TRANSISTOR XP6501-(TX) .ABQ29 1590001050 S.TRANSISTOR DTC114TUA T106Q30 1590000430 S.TRANSISTOR DTC144EUA T106Q31 1590001450 S.FET 2SJ144-GR (TE85R) Q33 1590000430 S.TRANSISTOR DTC144EUA T106Q34 1530002850 S.TRANSISTOR 2SC4116-BL (TE85R) Q35 1590000990 S.TRANSISTOR DTC363EK T146Q36 1590000430 S.TRANSISTOR DTC144EUA T106Q37 1590000430 S.TRANSISTOR DTC144EUA T106

Q38 1530003090 S.TRANSISTOR 2SC4213-B (TE85R)

D1 1790001210 S.DIODE 1SS375-TLD2 1750000510 S.DIODE UM9401F A onlyD3 1710001060 DIODE XB15A407 B onlyD4 1750000720 S.VARICAP HVC375BTRFD5 1750000510 S.DIODE UM9401FD6 1790000620 S.DIODE MA77 (TX) D7 1790001240 S.DIODE MA2S728-(TX) D8 1750000720 S.VARICAP HVC375BTRFD9 1750000710 S.VARICAP HVC350BTRFD10 1750000710 S.VARICAP HVC350BTRFD11 1790001210 S.DIODE 1SS375-TLD12 1790001210 S.DIODE 1SS375-TL B onlyD14 1790000620 S.DIODE MA77 (TX) D15 1790000620 S.DIODE MA77 (TX) D16 1750000770 S.VARICAP HVC376BTRFD18 1720000470 S.VARICAP 1SV239 (TPH3) D20 1790001250 S.DIODE MA2S111-(TX) D21 1750000830 S.VARICAP HVC362TRFD22 1790000700 DIODE DSA3A1D23 1750000370 S.DIODE DA221 TLD26 1790001250 S.DIODE MA2S111-(TX) D27 1790001250 S.DIODE MA2S111-(TX) D28 1790001240 S.DIODE MA2S728-(TX) D29 1790001250 S.DIODE MA2S111-(TX) D31 1750000770 S.VARICAP HVC376BTRFD33 1750000770 S.VARICAP HVC376BTRFD34 1750000770 S.VARICAP HVC376BTRFD37 1790001250 S.DIODE MA2S111-(TX) D40 1750000520 S.DIODE DAN222TLD42 1160000140 S.DIODE DAP222 TLD43 1160000140 S.DIODE DAP222 TLD44 1790001250 S.DIODE MA2S111-(TX) D45 1790001250 S.DIODE MA2S111-(TX) D48 1750000580 S.DIODE 1SV307 (TPH3) A onlyD49 1750000370 S.DIODE DA221 TLD50 1790001250 S.DIODE MA2S111-(TX) D51 1790001210 S.DIODE 1SS375-TL

FI1 2030000150 S.MONOLITH FL-335 (46.350 MHz) FI2 2020001840 CERAMIC ALFYM450F=KFI3 2040001440 S.LC NFE31PT152Z1E9L (NFM60R20T152)FI4 2040001440 S.LC NFE31PT152Z1E9L (NFM60R20T152)FI5 2040001440 S.LC NFE31PT152Z1E9L (NFM60R20T152)

B only

X1 6070000190 S.DISCRIMINATORCDBCB450KCAY24-R0 (CDBC450CX24)X2 6050011510 S.XTAL CR-740 (15.300 MHz)

L1 6200010050 S.COIL AS080547-47NL2 6200010050 S.COIL AS080547-47NL3 6200010050 S.COIL AS080547-47NL4 6200010430 S.COIL 0.50-2.0-6TLL5 6200010420 S.COIL FHW1210HC 1R0JGTL6 6200010400 S.COIL ELJRE 39NJ 39NL7 6200008090 S.COIL LQW2BHN68NJ01L (LQN21A 68NJ04)L8 6200008090 S.COIL LQW2BHN68NJ01L (LQN21A 68NJ04)L9 6200007750 S.COIL LQW2BHN56NJ01L (LQN21A 56NJ04)L10 6200004660 S.COIL MLF1608A 1R8K-TL11 6200007750 S.COIL LQW2BHN56NJ01L (LQN21A 56NJ04)L12 6200009180 S.COIL ELJRE R10J-F3L13 6200001620 S.COIL ELJFC 1R0K-FL16 6200010050 S.COIL AS080547-47NL18 6200009170 S.COIL ELJRE 47NJ-F2 A onlyL19 6200009150 S.COIL ELJRE 82NJ-F3L21 6200009150 S.COIL ELJRE 82NJ-F3L22 6200009160 S.COIL ELJRE 68NJ-F3L25 6200009460 S.COIL 0.25-1.9-7TL 67NL26 6200008390 S.COIL 0.25-1.9-9TLL27 6200002000 S.COIL NL 252018T-3R3JL28 6200002000 S.COIL NL 252018T-3R3JL29 6200004660 S.COIL MLF1608A 1R8K-TL31 6200007750 S.COIL LQW2BHN56NJ01L (LQN21A 56NJ04)L32 6200010390 S.COIL ELJRE 33NJ-F3L33 6200004480 S.COIL MLF1608D R82K-TL35 6200003540 S.COIL MLF1608D R22K-T

6 - 2

REF ORDER DESCRIPTIONNO. NO.REF ORDER DESCRIPTIONNO. NO.

[MAIN UNIT]REF ORDER DESCRIPTIONNO. NO.

A: [F110] B: [F111] and [F121] C: IC-F110 for [EUR]D: IC-F110 for [GEN] E: IC-F110 for 25 kHz F: IC-F110 for 20 kHz

Page 21: Icom Ic f121 Display

S.=Surface mount

[MAIN UNIT][MAIN UNIT]

L37 6200003640 S.COIL MLF1608E 100K-TL38 6200009460 S.COIL 0.25-1.9-7TL 67NL39 6200008150 S.COIL 0.35-1.6-7TL 44NL41 6200009160 S.COIL ELJRE 68NJ-F3L42 6200003550 S.COIL MLF1608A 4R7K-TL43 6200005740 S.COIL ELJRE 47NG-F

R1 7030000620 S.RESISTOR MCR10EZHJ 100 kΩR2 7030000220 S.RESISTOR MCR10EZHJ 47 Ω (470) R3 7030000220 S.RESISTOR MCR10EZHJ 47 Ω (470) R4 7030003370 S.RESISTOR ERJ3GEYJ 271 V (270 Ω) R5 7030003560 S.RESISTOR ERJ3GEYJ 103 V (10 kΩ) A

7030003610 S.RESISTOR ERJ3GEYJ 273 V (27 kΩ) BR6 7030003610 S.RESISTOR ERJ3GEYJ 273 V (27 kΩ) B

7030003620 S.RESISTOR ERJ3GEYJ 333 V (33 kΩ) AR7 7030003370 S.RESISTOR ERJ3GEYJ 271 V (270 Ω) R8 7030006070 S.RESISTOR ERJ12YJ101U (100 Ω) R9 7030003560 S.RESISTOR ERJ3GEYJ 103 V (10 kΩ) B onlyR10 7030003730 S.RESISTOR ERJ3GEYJ 274 V (270 kΩ) B onlyR11 7030003680 S.RESISTOR ERJ3GEYJ 104 V (100 kΩ) R12 7030005530 S.RESISTOR ERJ2GEJ 100 X (10 Ω) R13 7030003680 S.RESISTOR ERJ3GEYJ 104 V (100 kΩ) R14 7030003560 S.RESISTOR ERJ3GEYJ 103 V (10 kΩ) R15 7030003730 S.RESISTOR ERJ3GEYJ 274 V (270 kΩ) R16 7030003370 S.RESISTOR ERJ3GEYJ 271 V (270 Ω) R17 7030003320 S.RESISTOR ERJ3GEYJ 101 V (100 Ω) R18 7030004050 S.RESISTOR ERJ3GEYJ 1R0 V (1 Ω) R19 7030003680 S.RESISTOR ERJ3GEYJ 104 V (100 kΩ) R20 7030003370 S.RESISTOR ERJ3GEYJ 271 V (270 Ω) C

7030003400 S.RESISTOR ERJ3GEYJ 471 V (470 Ω) D, BR21 7030003720 S.RESISTOR ERJ3GEYJ 224 V (220 kΩ) R22 7030003560 S.RESISTOR ERJ3GEYJ 103 V (10 kΩ) R23 7030003700 S.RESISTOR ERJ3GEYJ 154 V (150 kΩ) R26 7030003400 S.RESISTOR ERJ3GEYJ 471 V (470 Ω) R27 7030003400 S.RESISTOR ERJ3GEYJ 471 V (470 Ω) R28 7030003210 S.RESISTOR ERJ3GEYJ 120 V (12 Ω) R29 7030003320 S.RESISTOR ERJ3GEYJ 101 V (100 Ω) R31 7030003320 S.RESISTOR ERJ3GEYJ 101 V (100 Ω) R32 7030003340 S.RESISTOR ERJ3GEYJ 151 V (150 Ω)R33 7030003340 S.RESISTOR ERJ3GEYJ 151 V (150 Ω)R34 7030003680 S.RESISTOR ERJ3GEYJ 104 V (100 kΩ) R35 7030003320 S.RESISTOR ERJ3GEYJ 101 V (100 Ω) R36 7030003510 S.RESISTOR ERJ3GEYJ 392 V (3.9 kΩ) R37 7030003490 S.RESISTOR ERJ3GEYJ 272 V (2.7 kΩ) E, B

7030003520 S.RESISTOR ERJ3GEYJ 472 V (4.7 kΩ) FR38 7030003680 S.RESISTOR ERJ3GEYJ 104 V (100 kΩ) R39 7030003280 S.RESISTOR ERJ3GEYJ 470 V (47 Ω) R40 7030003460 S.RESISTOR ERJ3GEYJ 152 V (1.5 kΩ) R42 7030003680 S.RESISTOR ERJ3GEYJ 104 V (100 kΩ)R43 7030003400 S.RESISTOR ERJ3GEYJ 471 V (470 Ω) R44 7030003720 S.RESISTOR ERJ3GEYJ 224 V (220 kΩ)R45 7030003700 S.RESISTOR ERJ3GEYJ 154 V (150 kΩ) R46 7030003480 S.RESISTOR ERJ3GEYJ 222 V (2.2 kΩ)R48 7030003710 S.RESISTOR ERJ3GEYJ 184 V (180 kΩ) B onlyR49 7520000230 S.POSISTOR PRF18BD471QB1RB B onlyR50 7030003560 S.RESISTOR ERJ3GEYJ 103 V (10 kΩ) R51 7030003770 S.RESISTOR ERJ3GEYJ 564 V (560 kΩ) A

7030003680 S.RESISTOR ERJ3GEYJ 104 V (100 kΩ) BR52 7030003580 S.RESISTOR ERJ3GEYJ 153 V (15 kΩ) R53 7030004050 S.RESISTOR ERJ3GEYJ 1R0 V (1 Ω) A

7030003360 S.RESISTOR ERJ3GEYJ 221 V (220 Ω) BR54 7030003550 S.RESISTOR ERJ3GEYJ 822 V (8.2 kΩ) B

7030003560 S.RESISTOR ERJ3GEYJ 103 V (10 kΩ) AR55 7030003520 S.RESISTOR ERJ3GEYJ 472 V (4.7 kΩ) R56 7030003700 S.RESISTOR ERJ3GEYJ 154 V (150 kΩ) R57 7030003560 S.RESISTOR ERJ3GEYJ 103 V (10 kΩ) R58 7030003320 S.RESISTOR ERJ3GEYJ 101 V (100 Ω) R59 7030003560 S.RESISTOR ERJ3GEYJ 103 V (10 kΩ) B

7030003590 S.RESISTOR ERJ3GEYJ 183 V (18 kΩ) AR60 7030003320 S.RESISTOR ERJ3GEYJ 101 V (100 Ω) R61 7030003280 S.RESISTOR ERJ3GEYJ 470 V (47 Ω) R62 7030003290 S.RESISTOR ERJ3GEYJ 560 V (56 Ω) R63 7030003580 S.RESISTOR ERJ3GEYJ 153 V (15 kΩ) R67 7030003320 S.RESISTOR ERJ3GEYJ 101 V (100 Ω) A

7030003300 S.RESISTOR ERJ3GEYJ 680 V (68 Ω) BR68 7030003560 S.RESISTOR ERJ3GEYJ 103 V (10 kΩ) R69 7030003520 S.RESISTOR ERJ3GEYJ 472 V (4.7 kΩ)

R70 7030003320 S.RESISTOR ERJ3GEYJ 101 V (100 Ω) R71 7030003320 S.RESISTOR ERJ3GEYJ 101 V (100 Ω) R73 7030003320 S.RESISTOR ERJ3GEYJ 101 V (100 Ω) R74 7030003690 S.RESISTOR ERJ3GEYJ 124 V (120 kΩ) R75 7030003690 S.RESISTOR ERJ3GEYJ 124 V (120 kΩ) R76 7030003400 S.RESISTOR ERJ3GEYJ 471 V (470 Ω) R77 7030003560 S.RESISTOR ERJ3GEYJ 103 V (10 kΩ) R78 7030003440 S.RESISTOR ERJ3GEYJ 102 V (1 kΩ) R79 7030005351 S.RESISTOR ERA3YED 182VR80 7030003440 S.RESISTOR ERJ3GEYJ 102 V (1 kΩ) R83 7030005351 S.RESISTOR ERA3YED 182VR84 7030006571 S.RESISTOR ERA3YED 392VR85 7030006571 S.RESISTOR ERA3YED 392VR86 7030003690 S.RESISTOR ERJ3GEYJ 124 V (120 kΩ) R89 7030003560 S.RESISTOR ERJ3GEYJ 103 V (10 kΩ) R90 7030003640 S.RESISTOR ERJ3GEYJ 473 V (47 kΩ) R91 7030003620 S.RESISTOR ERJ3GEYJ 333 V (33 kΩ) R92 7030003680 S.RESISTOR ERJ3GEYJ 104 V (100 kΩ) R93 7030003440 S.RESISTOR ERJ3GEYJ 102 V (1 kΩ) R95 7030003380 S.RESISTOR ERJ3GEYJ 331 V (330 Ω) C

7030003360 S.RESISTOR ERJ3GEYJ 221 V (220 Ω) D, BR96 7030003480 S.RESISTOR ERJ3GEYJ 222 V (2.2 kΩ) R97 7030004050 S.RESISTOR ERJ3GEYJ 1R0 V (1 Ω) R98 7030003480 S.RESISTOR ERJ3GEYJ 222 V (2.2 kΩ) R99 7030003440 S.RESISTOR ERJ3GEYJ 102 V (1 kΩ) R100 7030003560 S.RESISTOR ERJ3GEYJ 103 V (10 kΩ) R101 7030003440 S.RESISTOR ERJ3GEYJ 102 V (1 kΩ) R103 7030003700 S.RESISTOR ERJ3GEYJ 154 V (150 kΩ) R104 7030003450 S.RESISTOR ERJ3GEYJ 122 V (1.2 kΩ) R105 7030003640 S.RESISTOR ERJ3GEYJ 473 V (47 kΩ) R106 7030003670 S.RESISTOR ERJ3GEYJ 823 V (82 kΩ) R110 7030003280 S.RESISTOR ERJ3GEYJ 470 V (47 Ω) R111 7030003500 S.RESISTOR ERJ3GEYJ 332 V (3.3 kΩ) R112 7030003610 S.RESISTOR ERJ3GEYJ 273 V (27 kΩ) R113 7030003480 S.RESISTOR ERJ3GEYJ 222 V (2.2 kΩ) R114 7030003570 S.RESISTOR ERJ3GEYJ 123 V (12 kΩ) R115 7030003510 S.RESISTOR ERJ3GEYJ 392 V (3.9 kΩ) R116 7030003570 S.RESISTOR ERJ3GEYJ 123 V (12 kΩ) R117 7030003710 S.RESISTOR ERJ3GEYJ 184 V (180 kΩ) R118 7030003570 S.RESISTOR ERJ3GEYJ 123 V (12 kΩ) R119 7030003530 S.RESISTOR ERJ3GEYJ 562 V (5.6 kΩ) R120 7030003560 S.RESISTOR ERJ3GEYJ 103 V (10 kΩ) R121 7030003640 S.RESISTOR ERJ3GEYJ 473 V (47 kΩ) R122 7030003530 S.RESISTOR ERJ3GEYJ 562 V (5.6 kΩ)R123 7030003680 S.RESISTOR ERJ3GEYJ 104 V (100 kΩ) R124 7030003520 S.RESISTOR ERJ3GEYJ 472 V (4.7 kΩ) R125 7030003680 S.RESISTOR ERJ3GEYJ 104 V (100 kΩ) R126 7030003400 S.RESISTOR ERJ3GEYJ 471 V (470 Ω) R127 7030003630 S.RESISTOR ERJ3GEYJ 393 V (39 kΩ) R128 7030003560 S.RESISTOR ERJ3GEYJ 103 V (10 kΩ) R129 7030003320 S.RESISTOR ERJ3GEYJ 101 V (100 Ω) R130 7030003600 S.RESISTOR ERJ3GEYJ 223 V (22 kΩ) R133 7030003710 S.RESISTOR ERJ3GEYJ 184 V (180 kΩ) R134 7030003610 S.RESISTOR ERJ3GEYJ 273 V (27 kΩ)R135 7030003730 S.RESISTOR ERJ3GEYJ 274 V (270 kΩ) R136 7030003560 S.RESISTOR ERJ3GEYJ 103 V (10 kΩ) R137 7030003660 S.RESISTOR ERJ3GEYJ 683 V (68 kΩ) R138 7030003680 S.RESISTOR ERJ3GEYJ 104 V (100 kΩ) R139 7030003680 S.RESISTOR ERJ3GEYJ 104 V (100 kΩ) R141 7030005120 S.RESISTOR ERJ2GEJ 102 X (1 kΩ) R142 7410001130 S.ARRAY EXB28V102JXR143 7030005120 S.RESISTOR ERJ2GEJ 102 X (1 kΩ) R144 7030005120 S.RESISTOR ERJ2GEJ 102 X (1 kΩ) R145 7030005120 S.RESISTOR ERJ2GEJ 102 X (1 kΩ) R146 7030005120 S.RESISTOR ERJ2GEJ 102 X (1 kΩ) R147 7410001130 S.ARRAY EXB28V102JXR148 7410001130 S.ARRAY EXB28V102JXR149 7410001130 S.ARRAY EXB28V102JXR150 7410001130 S.ARRAY EXB28V102JXR156 7030003520 S.RESISTOR ERJ3GEYJ 472 V (4.7 kΩ) R159 7030003560 S.RESISTOR ERJ3GEYJ 103 V (10 kΩ) R183 7030003720 S.RESISTOR ERJ3GEYJ 224 V (220 kΩ) R184 7030003620 S.RESISTOR ERJ3GEYJ 333 V (33 kΩ) R185 7030003690 S.RESISTOR ERJ3GEYJ 124 V (120 kΩ) R186 7030003680 S.RESISTOR ERJ3GEYJ 104 V (100 kΩ) R187 7030003560 S.RESISTOR ERJ3GEYJ 103 V (10 kΩ) R188 7030003400 S.RESISTOR ERJ3GEYJ 471 V (470 Ω) R191 7030003720 S.RESISTOR ERJ3GEYJ 224 V (220 kΩ) R192 7030003720 S.RESISTOR ERJ3GEYJ 224 V (220 kΩ) R193 7030003760 S.RESISTOR ERJ3GEYJ 474 V (470 kΩ) R194 7030003480 S.RESISTOR ERJ3GEYJ 222 V (2.2 kΩ)

6 - 3

REF ORDER DESCRIPTIONNO. NO.REF ORDER DESCRIPTIONNO. NO.

A: [F110] B: [F111] and [F121] C: IC-F110 for [EUR]D: IC-F110 for [GEN] E: IC-F110 for 25 kHz F: IC-F110 for 20 kHz

Page 22: Icom Ic f121 Display

S.=Surface mount

[MAIN UNIT][MAIN UNIT]

R195 7030003440 S.RESISTOR ERJ3GEYJ 102 V (1 kΩ) R196 7030003600 S.RESISTOR ERJ3GEYJ 223 V (22 kΩ) R197 7030003560 S.RESISTOR ERJ3GEYJ 103 V (10 kΩ) R198 7030003560 S.RESISTOR ERJ3GEYJ 103 V (10 kΩ) R199 7030003560 S.RESISTOR ERJ3GEYJ 103 V (10 kΩ) R200 7030003560 S.RESISTOR ERJ3GEYJ 103 V (10 kΩ) R201 7030003400 S.RESISTOR ERJ3GEYJ 471 V (470 Ω) R202 7030000440 S.RESISTOR MCR10EZHJ 3.3 kΩ A

7030000480 S.RESISTOR MCR10EZHJ 6.8 kΩ (682) BR203 7030000440 S.RESISTOR MCR10EZHJ 3.3 kΩ A

7030000480 S.RESISTOR MCR10EZHJ 6.8 kΩ (682) BR204 7030003520 S.RESISTOR ERJ3GEYJ 472 V (4.7 kΩ) R205 7030003560 S.RESISTOR ERJ3GEYJ 103 V (10 kΩ) R209 7510001470 S.THERMISTOR NTCG20 4AG 473JTR210 7030005871 S.RESISTOR ERA3YKD 104V (100 kΩ) R211 7030003290 S.RESISTOR ERJ3GEYJ 560 V (56 Ω) R212 7030003380 S.RESISTOR ERJ3GEYJ 331 V (330 Ω)R213 7030003560 S.RESISTOR ERJ3GEYJ 103 V (10 kΩ) R214 7030003460 S.RESISTOR ERJ3GEYJ 152 V (1.5 kΩ) R215 7030003400 S.RESISTOR ERJ3GEYJ 471 V (470 Ω) R216 7030003460 S.RESISTOR ERJ3GEYJ 152 V (1.5 kΩ) R217 7030003600 S.RESISTOR ERJ3GEYJ 223 V (22 kΩ) R218 7030003600 S.RESISTOR ERJ3GEYJ 223 V (22 kΩ) R219 7030003680 S.RESISTOR ERJ3GEYJ 104 V (100 kΩ) R220 7030003640 S.RESISTOR ERJ3GEYJ 473 V (47 kΩ) R221 7030003640 S.RESISTOR ERJ3GEYJ 473 V (47 kΩ) R222 7030003560 S.RESISTOR ERJ3GEYJ 103 V (10 kΩ) R223 7030003440 S.RESISTOR ERJ3GEYJ 102 V (1 kΩ) R224 7030003280 S.RESISTOR ERJ3GEYJ 470 V (47 Ω) R225 7030003560 S.RESISTOR ERJ3GEYJ 103 V (10 kΩ) R226 7030003680 S.RESISTOR ERJ3GEYJ 104 V (100 kΩ) R227 7030003800 S.RESISTOR ERJ3GEYJ 105 V (1 MΩ) R228 7030003680 S.RESISTOR ERJ3GEYJ 104 V (100 kΩ) R229 7030003800 S.RESISTOR ERJ3GEYJ 105 V (1 MΩ) R230 7030003660 S.RESISTOR ERJ3GEYJ 683 V (68 kΩ)R231 7030004050 S.RESISTOR ERJ3GEYJ 1R0 V (1 Ω)R232 7030003630 S.RESISTOR ERJ3GEYJ 393 V (39 kΩ) R234 7030003550 S.RESISTOR ERJ3GEYJ 822 V (8.2 kΩ) R235 7030003440 S.RESISTOR ERJ3GEYJ 102 V (1 kΩ) R236 7030003450 S.RESISTOR ERJ3GEYJ 122 V (1.2 kΩ) R237 7030003780 S.RESISTOR ERJ3GEYJ 684 V (680 kΩ) R238 7030003680 S.RESISTOR ERJ3GEYJ 104 V (100 kΩ) R240 7030003680 S.RESISTOR ERJ3GEYJ 104 V (100 kΩ) R241 7030003680 S.RESISTOR ERJ3GEYJ 104 V (100 kΩ) R242 7030003630 S.RESISTOR ERJ3GEYJ 393 V (39 kΩ) R243 7030003670 S.RESISTOR ERJ3GEYJ 823 V (82 kΩ) R244 7030003750 S.RESISTOR ERJ3GEYJ 394 V (390 kΩ) R245 7030003710 S.RESISTOR ERJ3GEYJ 184 V (180 kΩ) R247 7030003600 S.RESISTOR ERJ3GEYJ 223 V (22 kΩ) R248 7030003600 S.RESISTOR ERJ3GEYJ 223 V (22 kΩ) R249 7030003600 S.RESISTOR ERJ3GEYJ 223 V (22 kΩ) R250 7030003680 S.RESISTOR ERJ3GEYJ 104 V (100 kΩ) R251 7030003760 S.RESISTOR ERJ3GEYJ 474 V (470 kΩ) R252 7030003400 S.RESISTOR ERJ3GEYJ 471 V (470 Ω) R261 7030005160 S.RESISTOR ERJ2GEJ 105 X (1 MΩ) R262 7030005160 S.RESISTOR ERJ2GEJ 105 X (1 MΩ) R263 7030005160 S.RESISTOR ERJ2GEJ 105 X (1 MΩ) R264 7030005070 S.RESISTOR ERJ2GEJ 683 X (68 kΩ) R265 7030008290 S.RESISTOR ERJ2GEJ 183 X (18 kΩ) R266 7030005240 S.RESISTOR ERJ2GEJ 473 X (47 kΩ) R267 7030005600 S.RESISTOR ERJ2GEJ 273 X (27 kΩ) R268 7030005050 S.RESISTOR ERJ2GEJ 103 X (10 kΩ) R269 7030003680 S.RESISTOR ERJ3GEYJ 104 V (100 kΩ) R270 7030003680 S.RESISTOR ERJ3GEYJ 104 V (100 kΩ) R271 7030003320 S.RESISTOR ERJ3GEYJ 101 V (100 Ω) R285 7030003320 S.RESISTOR ERJ3GEYJ 101 V (100 Ω) R287 7030003560 S.RESISTOR ERJ3GEYJ 103 V (10 kΩ) R290 7030003420 S.RESISTOR ERJ3GEYJ 681 V (680 Ω) R291 7030003680 S.RESISTOR ERJ3GEYJ 104 V (100 kΩ) R297 7030005651 S.RESISTOR ERA3YKD 304V (300 kΩ) R298 7030005871 S.RESISTOR ERA3YKD 104V (100 kΩ) R304 7030003600 S.RESISTOR ERJ3GEYJ 223 V (22 kΩ) R310 7030003550 S.RESISTOR ERJ3GEYJ 822 V (8.2 kΩ) R311 7030003360 S.RESISTOR ERJ3GEYJ 221 V (220 Ω) R312 7030003720 S.RESISTOR ERJ3GEYJ 224 V (220 kΩ) R313 7030003800 S.RESISTOR ERJ3GEYJ 105 V (1 MΩ) R314 7030003680 S.RESISTOR ERJ3GEYJ 104 V (100 kΩ) R315 7030003680 S.RESISTOR ERJ3GEYJ 104 V (100 kΩ) R316 7030003440 S.RESISTOR ERJ3GEYJ 102 V (1 kΩ) R317 7030003440 S.RESISTOR ERJ3GEYJ 102 V (1 kΩ) R318 7030003520 S.RESISTOR ERJ3GEYJ 472 V (4.7 kΩ)

R319 7030003590 S.RESISTOR ERJ3GEYJ 183 V (18 kΩ) R320 7030003760 S.RESISTOR ERJ3GEYJ 474 V (470 kΩ) R321 7030003560 S.RESISTOR ERJ3GEYJ 103 V (10 kΩ) R322 7030003680 S.RESISTOR ERJ3GEYJ 104 V (100 kΩ) R323 7030005220 S.RESISTOR ERJ2GEJ 223 X (22 kΩ) R324 7030003680 S.RESISTOR ERJ3GEYJ 104 V (100 kΩ) R325 7030005120 S.RESISTOR ERJ2GEJ 102 X (1 kΩ) R326 7030005120 S.RESISTOR ERJ2GEJ 102 X (1 kΩ) R327 7030005120 S.RESISTOR ERJ2GEJ 102 X (1 kΩ) R328 7030004040 S.RESISTOR ERJ3GEYJ 4R7 V (4.7 Ω) R329 7030000440 S.RESISTOR MCR10EZHJ 3.3 kΩ A

7030000480 S.RESISTOR MCR10EZHJ 6.8 kΩ (682) BR330 7030003520 S.RESISTOR ERJ3GEYJ 472 V (4.7 kΩ) R331 7030003440 S.RESISTOR ERJ3GEYJ 102 V (1 kΩ) R332 7030003620 S.RESISTOR ERJ3GEYJ 333 V (33 kΩ) R333 7030003680 S.RESISTOR ERJ3GEYJ 104 V (100 kΩ) R334 7030003760 S.RESISTOR ERJ3GEYJ 474 V (470 kΩ) R335 7030003440 S.RESISTOR ERJ3GEYJ 102 V (1 kΩ)R336 7030003660 S.RESISTOR ERJ3GEYJ 683 V (68 kΩ)

C1 4030011170 S.CERAMIC GRM31M2C2H180JV01L (GRM42-6 CH)C2 4030011180 S.CERAMIC GRM31M2C2H220JV01L (GRM42-6 CH)

A4030011270 S.CERAMIC GRM31M2C2H200JV01L (GRM42-6 CH)

BC3 4030011340 S.CERAMIC C1608 CH 1H 471J-TC4 4030007040 S.CERAMIC C1608 CH 1H 180J-T A

4030007030 S.CERAMIC C1608 CH 1H 150J-T BC5 4030011340 S.CERAMIC C1608 CH 1H 471J-TC6 4030011180 S.CERAMIC GRM31M2C2H220JV01L (GRM42-6 CH)

A4030011270 S.CERAMIC GRM31M2C2H200JV01L (GRM42-6 CH)

BC7 4030011290 S.CERAMIC GRM31M2C2H240JV01L (GRM42-6 CH)

A4030011170 S.CERAMIC GRM31M2C2H180JV01L (GRM42-6 CH)

BC8 4030011180 S.CERAMIC GRM31M2C2H220JV01L (GRM42-6 CH)

A4030011270 S.CERAMIC GRM31M2C2H200JV01L (GRM42-6 CH)

BC9 4030011180 S.CERAMIC GRM31M2C2H220JV01L (GRM42-6 CH)

A4030011270 S.CERAMIC GRM31M2C2H200JV01L (GRM42-6 CH)

BC10 4030006860 S.CERAMIC C1608 JB 1H 102K-TC11 4030006860 S.CERAMIC C1608 JB 1H 102K-TC12 4030011340 S.CERAMIC C1608 CH 1H 471J-TC13 4030007090 S.CERAMIC C1608 CH 1H 470J-TC14 4030017200 S.CERAMIC GRM31BR32J102KY01L (GHM1030 R)C15 4030008560 S.CERAMIC C1608 CH 1H 300J-TC17 4030007020 S.CERAMIC C1608 CH 1H 120J-TC18 4030011770 S.CERAMIC C1608 CH 1H 060B-TC19 4030006860 S.CERAMIC C1608 JB 1H 102K-TC20 4030006860 S.CERAMIC C1608 JB 1H 102K-TC21 4030009540 S.CERAMIC C1608 CH 1H 1R5B-TC22 4030009540 S.CERAMIC C1608 CH 1H 1R5B-TC25 4030011770 S.CERAMIC C1608 CH 1H 060B-TC26 4030006860 S.CERAMIC C1608 JB 1H 102K-TC27 4030006860 S.CERAMIC C1608 JB 1H 102K-TC28 4030006860 S.CERAMIC C1608 JB 1H 102K-TC29 4030009910 S.CERAMIC C1608 CH 1H 040B-TC30 4030007050 S.CERAMIC C1608 CH 1H 220J-TC31 4030011600 S.CERAMIC C1608 JB 1E 104K-TC32 4030006860 S.CERAMIC C1608 JB 1H 102K-TC33 4030011600 S.CERAMIC C1608 JB 1E 104K-TC34 4030017460 S.CERAMIC ECJ0EB1E102KC35 4030017490 S.CERAMIC C1608 JB 1A 105K-TC36 4030006860 S.CERAMIC C1608 JB 1H 102K-TC37 4030006860 S.CERAMIC C1608 JB 1H 102K-TC38 4030006860 S.CERAMIC C1608 JB 1H 102K-TC39 4030006860 S.CERAMIC C1608 JB 1H 102K-TC40 4030009540 S.CERAMIC C1608 CH 1H 1R5B-TC41 4030007050 S.CERAMIC C1608 CH 1H 220J-TC42 4030006860 S.CERAMIC C1608 JB 1H 102K-TC43 4030006860 S.CERAMIC C1608 JB 1H 102K-TC44 4030009530 S.CERAMIC C1608 CH 1H 030B-TC45 4030006860 S.CERAMIC C1608 JB 1H 102K-TC48 4030007090 S.CERAMIC C1608 CH 1H 470J-T

6 - 4

REF ORDER DESCRIPTIONNO. NO.REF ORDER DESCRIPTIONNO. NO.

A: [F110] B: [F111] and [F121] C: IC-F110 for [EUR]D: IC-F110 for [GEN] E: IC-F110 for 25 kHz F: IC-F110 for 20 kHz

Page 23: Icom Ic f121 Display

S.=Surface mount

[MAIN UNIT][MAIN UNIT]

C49 4030007040 S.CERAMIC C1608 CH 1H 180J-TC50 4030006860 S.CERAMIC C1608 JB 1H 102K-TC51 4030006860 S.CERAMIC C1608 JB 1H 102K-TC52 4030007060 S.CERAMIC C1608 CH 1H 270J-TC53 4030006900 S.CERAMIC C1608 JB 1H 103K-TC54 4030006860 S.CERAMIC C1608 JB 1H 102K-TC55 4030009910 S.CERAMIC C1608 CH 1H 040B-TC56 4030007040 S.CERAMIC C1608 CH 1H 180J-TC57 4030006860 S.CERAMIC C1608 JB 1H 102K-TC58 4030006860 S.CERAMIC C1608 JB 1H 102K-TC59 4030006860 S.CERAMIC C1608 JB 1H 102K-TC60 4030006900 S.CERAMIC C1608 JB 1H 103K-TC61 4030007130 S.CERAMIC C1608 CH 1H 101J-TC62 4030007120 S.CERAMIC C1608 CH 1H 820J-TC63 4030017420 S.CERAMIC ECJ0EC1H470JC64 4030006860 S.CERAMIC C1608 JB 1H 102K-TC65 4030006860 S.CERAMIC C1608 JB 1H 102K-TC66 4030006860 S.CERAMIC C1608 JB 1H 102K-TC67 4030006860 S.CERAMIC C1608 JB 1H 102K-TC68 4030007130 S.CERAMIC C1608 CH 1H 101J-TC69 4030007140 S.CERAMIC C1608 CH 1H 121J-TC70 4030007140 S.CERAMIC C1608 CH 1H 121J-TC71 4030011600 S.CERAMIC C1608 JB 1E 104K-TC72 4030006860 S.CERAMIC C1608 JB 1H 102K-T B onlyC73 4030017490 S.CERAMIC C1608 JB 1A 105K-TC74 4030006860 S.CERAMIC C1608 JB 1H 102K-TC75 4550006050 S.TANTALUM TEMSVA 0J 106M8LC76 4030006900 S.CERAMIC C1608 JB 1H 103K-TC77 4030006860 S.CERAMIC C1608 JB 1H 102K-TC78 4030006860 S.CERAMIC C1608 JB 1H 102K-TC79 4030011810 S.CERAMIC C1608 JB 1A 224K-TC80 4030011600 S.CERAMIC C1608 JB 1E 104K-TC81 4030006860 S.CERAMIC C1608 JB 1H 102K-TC82 4030011270 S.CERAMIC GRM31M2C2H200JV01L (GRM42-6 CH)

A4030011120 S.CERAMIC GRM31M2C2H100JV01L (GRM42-6 CH)

BC83 4030011180 S.CERAMIC GRM31M2C2H220JV01L (GRM42-6 CH)

A4030011120 S.CERAMIC GRM31M2C2H100JV01L (GRM42-6 CH)

BC84 4030007090 S.CERAMIC C1608 CH 1H 470J-TC85 4030006860 S.CERAMIC C1608 JB 1H 102K-TC86 4030007090 S.CERAMIC C1608 CH 1H 470J-TC87 4030006860 S.CERAMIC C1608 JB 1H 102K-TC88 4030006860 S.CERAMIC C1608 JB 1H 102K-TC89 4030007040 S.CERAMIC C1608 CH 1H 180J-T A onlyC90 4030007040 S.CERAMIC C1608 CH 1H 180J-T A onlyC91 4510005750 S.ELECTROLYTIC ECEV1EA220SPC92 4030007030 S.CERAMIC C1608 CH 1H 150J-TC93 4030007030 S.CERAMIC C1608 CH 1H 150J-T A

4030007020 S.CERAMIC C1608 CH 1H 120J-T BC94 4030007090 S.CERAMIC C1608 CH 1H 470J-TC95 4030006860 S.CERAMIC C1608 JB 1H 102K-TC96 4030006860 S.CERAMIC C1608 JB 1H 102K-TC97 4030007090 S.CERAMIC C1608 CH 1H 470J-TC99 4030006860 S.CERAMIC C1608 JB 1H 102K-TC100 4030007010 S.CERAMIC C1608 CH 1H 100D-TC101 4030009540 S.CERAMIC C1608 CH 1H 1R5B-TC102 4030007010 S.CERAMIC C1608 CH 1H 100D-TC103 4030009530 S.CERAMIC C1608 CH 1H 030B-TC104 4030006860 S.CERAMIC C1608 JB 1H 102K-TC105 4030006860 S.CERAMIC C1608 JB 1H 102K-TC106 4030007090 S.CERAMIC C1608 CH 1H 470J-TC107 4030006860 S.CERAMIC C1608 JB 1H 102K-TC108 4030006900 S.CERAMIC C1608 JB 1H 103K-TC109 4030006860 S.CERAMIC C1608 JB 1H 102K-TC110 4030011340 S.CERAMIC C1608 CH 1H 471J-TC111 4030007090 S.CERAMIC C1608 CH 1H 470J-TC113 4030009560 S.CERAMIC C1608 CH 1H R75B-TC114 4030007070 S.CERAMIC C1608 CH 1H 330J-TC115 4030007070 S.CERAMIC C1608 CH 1H 330J-TC116 4030006900 S.CERAMIC C1608 JB 1H 103K-TC117 4030011340 S.CERAMIC C1608 CH 1H 471J-TC118 4030009500 S.CERAMIC C1608 CH 1H 0R5B-TC119 4030006860 S.CERAMIC C1608 JB 1H 102K-TC120 4030011340 S.CERAMIC C1608 CH 1H 471J-TC121 4030007040 S.CERAMIC C1608 CH 1H 180J-TC122 4030007070 S.CERAMIC C1608 CH 1H 330J-TC123 4030007110 S.CERAMIC C1608 CH 1H 680J-T

C124 4030011280 S.CERAMIC C1608 CH 1H 271J-TC126 4030007070 S.CERAMIC C1608 CH 1H 330J-TC127 4030007030 S.CERAMIC C1608 CH 1H 150J-TC129 4030009510 S.CERAMIC C1608 CH 1H 010B-TC131 4030009510 S.CERAMIC C1608 CH 1H 010B-TC132 4030011600 S.CERAMIC C1608 JB 1E 104K-TC133 4610001590 S.TRIMMER TZC3R100A110R00C134 4610001590 S.TRIMMER TZC3R100A110R00C135 4030006860 S.CERAMIC C1608 JB 1H 102K-TC136 4030009530 S.CERAMIC C1608 CH 1H 030B-TC138 4030007090 S.CERAMIC C1608 CH 1H 470J-TC139 4030011600 S.CERAMIC C1608 JB 1E 104K-TC140 4030011600 S.CERAMIC C1608 JB 1E 104K-TC141 4030006860 S.CERAMIC C1608 JB 1H 102K-TC142 4030006860 S.CERAMIC C1608 JB 1H 102K-TC143 4030006860 S.CERAMIC C1608 JB 1H 102K-TC144 4030007090 S.CERAMIC C1608 CH 1H 470J-TC145 4030010760 S.CERAMIC C1608 CH 1H 331J-TC146 4550006150 S.TANTALUM ECST1CY105RC147 4550006390 S.TANTALUM TEMSVA 1C 335M-8LC148 4510004630 S.ELECTROLYTIC ECEV1CA100SRC149 4550000550 S.TANTALUM TESVA 1V 224M1-8LC151 4030011600 S.CERAMIC C1608 JB 1E 104K-TC152 4030007090 S.CERAMIC C1608 CH 1H 470J-TC153 4030007090 S.CERAMIC C1608 CH 1H 470J-TC154 4030007090 S.CERAMIC C1608 CH 1H 470J-TC155 4030011280 S.CERAMIC C1608 CH 1H 271J-TC156 4030007090 S.CERAMIC C1608 CH 1H 470J-TC157 4030007130 S.CERAMIC C1608 CH 1H 101J-TC158 4030007130 S.CERAMIC C1608 CH 1H 101J-TC160 4030007000 S.CERAMIC C1608 CH 1H 090D-TC161 4030007130 S.CERAMIC C1608 CH 1H 101J-TC162 4030006900 S.CERAMIC C1608 JB 1H 103K-TC163 4510004630 S.ELECTROLYTIC ECEV1CA100SRC164 4030006900 S.CERAMIC C1608 JB 1H 103K-TC165 4030006900 S.CERAMIC C1608 JB 1H 103K-TC166 4030006900 S.CERAMIC C1608 JB 1H 103K-TC167 4030008920 S.CERAMIC C1608 JB 1H 473K-TC168 4030008920 S.CERAMIC C1608 JB 1H 473K-TC169 4030008920 S.CERAMIC C1608 JB 1H 473K-TC170 4030006860 S.CERAMIC C1608 JB 1H 102K-TC172 4030009630 S.CERAMIC C1608 JB 1H 822K-TC173 4030011600 S.CERAMIC C1608 JB 1E 104K-TC174 4510004630 S.ELECTROLYTIC ECEV1CA100SRC175 4030006860 S.CERAMIC C1608 JB 1H 102K-TC176 4030007090 S.CERAMIC C1608 CH 1H 470J-TC177 4030008770 S.CERAMIC C1608 JB 1H 562K-TC178 4030007150 S.CERAMIC C1608 CH 1H 151J-TC179 4030011600 S.CERAMIC C1608 JB 1E 104K-TC180 4510004640 S.ELECTROLYTIC ECEV1CA470SPC181 4030011600 S.CERAMIC C1608 JB 1E 104K-TC182 4030008770 S.CERAMIC C1608 JB 1H 562K-TC183 4030011600 S.CERAMIC C1608 JB 1E 104K-TC184 4030009580 S.CERAMIC C1608 JB 1H 681K-TC200 4030011600 S.CERAMIC C1608 JB 1E 104K-TC201 4030016930 S.CERAMIC ECJ0EB1A104KC202 4030016930 S.CERAMIC ECJ0EB1A104KC203 4030016930 S.CERAMIC ECJ0EB1A104KC204 4030017420 S.CERAMIC ECJ0EC1H470JC207 4030017460 S.CERAMIC ECJ0EB1E102KC208 4030017460 S.CERAMIC ECJ0EB1E102KC209 4030017460 S.CERAMIC ECJ0EB1E102KC210 4030017460 S.CERAMIC ECJ0EB1E102KC226 4030017420 S.CERAMIC ECJ0EC1H470JC244 4030017480 S.CERAMIC C1608 JB 1A 474K-TC245 4030006900 S.CERAMIC C1608 JB 1H 103K-TC246 4030011600 S.CERAMIC C1608 JB 1E 104K-TC248 4030006860 S.CERAMIC C1608 JB 1H 102K-TC249 4030006870 S.CERAMIC C1608 JB 1H 222K-TC250 4030011600 S.CERAMIC C1608 JB 1E 104K-TC251 4030011600 S.CERAMIC C1608 JB 1E 104K-TC252 4030011600 S.CERAMIC C1608 JB 1E 104K-TC253 4030008880 S.CERAMIC C1608 JB 1H 223K-TC254 4030006860 S.CERAMIC C1608 JB 1H 102K-TC255 4510008030 S.ELECTROLYTIC ECEV1EA471PC256 4510006260 S.ELECTROLYTIC ECEV1AA471UPC258 4510008030 S.ELECTROLYTIC ECEV1EA471PC259 4030006860 S.CERAMIC C1608 JB 1H 102K-TC260 4030007090 S.CERAMIC C1608 CH 1H 470J-TC261 4030004760 S.CERAMIC C2012 JF 1H 104Z-TC262 4030011600 S.CERAMIC C1608 JB 1E 104K-TC263 4030004760 S.CERAMIC C2012 JF 1H 104Z-T

6 - 5

REF ORDER DESCRIPTIONNO. NO.REF ORDER DESCRIPTIONNO. NO.

A: [F110] B: [F111] and [F121] C: IC-F110 for [EUR]D: IC-F110 for [GEN] E: IC-F110 for 25 kHz F: IC-F110 for 20 kHz

Page 24: Icom Ic f121 Display

S.=Surface mount

[MAIN UNIT]

C264 4030011600 S.CERAMIC C1608 JB 1E 104K-TC265 4510008030 S.ELECTROLYTIC ECEV1EA471PC266 4510004630 S.ELECTROLYTIC ECEV1CA100SRC268 4550006700 S.TANTALUM ECST1AY106RC269 4030006860 S.CERAMIC C1608 JB 1H 102K-TC270 4030006860 S.CERAMIC C1608 JB 1H 102K-TC271 4510004630 S.ELECTROLYTIC ECEV1CA100SRC272 4510004630 S.ELECTROLYTIC ECEV1CA100SRC273 4030006860 S.CERAMIC C1608 JB 1H 102K-TC274 4510004630 S.ELECTROLYTIC ECEV1CA100SRC275 4030006860 S.CERAMIC C1608 JB 1H 102K-TC276 4030006860 S.CERAMIC C1608 JB 1H 102K-TC280 4030006900 S.CERAMIC C1608 JB 1H 103K-TC282 4030011600 S.CERAMIC C1608 JB 1E 104K-TC283 4030006860 S.CERAMIC C1608 JB 1H 102K-TC286 4030006900 S.CERAMIC C1608 JB 1H 103K-TC287 4030008650 S.CERAMIC C1608 JB 1H 332K-TC288 4030011600 S.CERAMIC C1608 JB 1E 104K-TC289 4030011600 S.CERAMIC C1608 JB 1E 104K-TC290 4030006860 S.CERAMIC C1608 JB 1H 102K-TC291 4030006860 S.CERAMIC C1608 JB 1H 102K-TC292 4030007090 S.CERAMIC C1608 CH 1H 470J-TC293 4030006860 S.CERAMIC C1608 JB 1H 102K-TC294 4030006860 S.CERAMIC C1608 JB 1H 102K-TC295 4510004630 S.ELECTROLYTIC ECEV1CA100SRC297 4030007050 S.CERAMIC C1608 CH 1H 220J-TC298 4030007020 S.CERAMIC C1608 CH 1H 120J-TC299 4030007020 S.CERAMIC C1608 CH 1H 120J-TC300 4030007010 S.CERAMIC C1608 CH 1H 100D-TC301 4030006860 S.CERAMIC C1608 JB 1H 102K-TC302 4030007010 S.CERAMIC C1608 CH 1H 100D-TC303 4030006860 S.CERAMIC C1608 JB 1H 102K-TC304 4030007010 S.CERAMIC C1608 CH 1H 100D-TC305 4030007100 S.CERAMIC C1608 CH 1H 560J-TC306 4030009910 S.CERAMIC C1608 CH 1H 040B-TC307 4030006980 S.CERAMIC C1608 CH 1H 070D-TC308 4030009530 S.CERAMIC C1608 CH 1H 030B-TC309 4030006900 S.CERAMIC C1608 JB 1H 103K-TC310 4030006860 S.CERAMIC C1608 JB 1H 102K-TC311 4030006860 S.CERAMIC C1608 JB 1H 102K-TC312 4030011600 S.CERAMIC C1608 JB 1E 104K-TC314 4030006900 S.CERAMIC C1608 JB 1H 103K-TC315 4030008880 S.CERAMIC C1608 JB 1H 223K-TC316 4030009490 S.CERAMIC C1608 JB 1H 821K-TC317 4030009490 S.CERAMIC C1608 JB 1H 821K-TC318 4030011600 S.CERAMIC C1608 JB 1E 104K-TC320 4030008910 S.CERAMIC C1608 JB 1H 393K-TC321 4030011600 S.CERAMIC C1608 JB 1E 104K-TC322 4030006900 S.CERAMIC C1608 JB 1H 103K-TC324 4030011340 S.CERAMIC C1608 CH 1H 471J-TC325 4030006860 S.CERAMIC C1608 JB 1H 102K-TC327 4510004630 S.ELECTROLYTIC ECEV1CA100SRC330 4550006170 S.TANTALUM ECST1AY225RC331 4030006860 S.CERAMIC C1608 JB 1H 102K-TC332 4550006700 S.TANTALUM ECST1AY106RC333 4030007090 S.CERAMIC C1608 CH 1H 470J-TC335 4030006860 S.CERAMIC C1608 JB 1H 102K-TC337 4030006860 S.CERAMIC C1608 JB 1H 102K-TC339 4030009550 S.CERAMIC C1608 CH 1H 2R5B-TC342 4550006410 S.TANTALUM ECST1VY334RC343 4030006900 S.CERAMIC C1608 JB 1H 103K-TC348 4030006860 S.CERAMIC C1608 JB 1H 102K-TC349 4030011600 S.CERAMIC C1608 JB 1E 104K-TC350 4030017490 S.CERAMIC C1608 JB 1A 105K-TC351 4030008920 S.CERAMIC C1608 JB 1H 473K-TC352 4510005750 S.ELECTROLYTIC ECEV1EA220SPC353 4030011770 S.CERAMIC C1608 CH 1H 060B-TC355 4030006990 S.CERAMIC C1608 CH 1H 080D-TC356 4030006990 S.CERAMIC C1608 CH 1H 080D-TC357 4030011600 S.CERAMIC C1608 JB 1E 104K-TC359 4030017490 S.CERAMIC C1608 JB 1A 105K-TC360 4030009920 S.CERAMIC C1608 CH 1H 050B-TC361 4030016930 S.CERAMIC ECJ0EB1A104KC362 4030006860 S.CERAMIC C1608 JB 1H 102K-TC363 4030011600 S.CERAMIC C1608 JB 1E 104K-TC364 4030006850 S.CERAMIC C1608 JB 1H 471K-TC372 4030006850 S.CERAMIC C1608 JB 1H 471K-TC375 4030006860 S.CERAMIC C1608 JB 1H 102K-TC376 4030009910 S.CERAMIC C1608 CH 1H 040B-TC378 4030010020 S.CERAMIC C1608 JB 1H 122K-TC379 4030006900 S.CERAMIC C1608 JB 1H 103K-T

6 - 6

REF ORDER DESCRIPTIONNO. NO.

A: [F110] B: [F111] and [F121] C: IC-F110 for [EUR]D: IC-F110 for [GEN] E: IC-F110 for 25 kHz F: IC-F110 for 20 kHz

[MAIN UNIT]

C380 4030007050 S.CERAMIC C1608 CH 1H 220J-T A4030007040 S.CERAMIC C1608 CH 1H 180J-T B

C381 4030007050 S.CERAMIC C1608 CH 1H 220J-T A4030009650 S.CERAMIC C1608 CH 1H 240J-T B

C382 4030007170 S.CERAMIC C1608 CH 1H 221J-TC383 4030011600 S.CERAMIC C1608 JB 1E 104K-TC384 4030011600 S.CERAMIC C1608 JB 1E 104K-TC385 4030011600 S.CERAMIC C1608 JB 1E 104K-TC508 4030011170 S.CERAMIC GRM31M2C2H180JV01L (GRM42-6 CH)C509 4030011600 S.CERAMIC C1608 JB 1E 104K-TC510 4030007030 S.CERAMIC C1608 CH 1H 150J-T A onlyC511 4030009570 S.CERAMIC C1608 CH 1H 0R3B-T B onlyC512 4030006860 S.CERAMIC C1608 JB 1H 102K-T B onlyC513 4030011120 S.CERAMIC GRM31M2C2H100JV01L (GRM42-6 CH)

B onlyC514 4030011120 S.CERAMIC GRM31M2C2H100JV01L (GRM42-6 CH)

B onlyC515 4030006860 S.CERAMIC C1608 JB 1H 102K-T B only

J1 6510018430 S.CONNECTOR AXN330C038PJ2 6510022470 S.CONNECTOR 40FLT-SM1-TBJ4 6450000140 CONNECTOR HSJ0807-01-010J6 6510019250 S.CONNECTOR B11B-ZR-SM3-TFJ7 6510014960 S.CONNECTOR B2B-ZR-SM3-TF

W1 7120000470 JUMPER ERDS2T0W2 8900011861 CABLE OPC-1195A <CMI>W4 7030003860 S.JUMPER ERJ3GE JPW VW6 7030010040 S.JUMPER ERJ2GE-JPWW7 7030010040 S.JUMPER ERJ2GE-JPWW8 7030010040 S.JUMPER ERJ2GE-JPWW9 7030010040 S.JUMPER ERJ2GE-JPWW10 7030003860 S.JUMPER ERJ3GE JPW VW11 7030003860 S.JUMPER ERJ3GE JPW V B onlyW12 7030003860 S.JUMPER ERJ3GE JPW V B only

EP1 6910013370 S.BEAD BLM18BB221SN1D (BLM11B221SB)EP2 6910011560 BEAD HF70BB4.5X5X1.6EP3 6910011560 BEAD HF70BB4.5X5X1.6EP4 6910010280 BEAD HF70BB9.5X10.4X4.9EP5 6910010280 BEAD HF70BB9.5X10.4X4.9EP6 0910055673 PCB B 5909C

REF ORDER DESCRIPTIONNO. NO.

Page 25: Icom Ic f121 Display

SECTION 7 MECHANICAL PARTS AND DISASSEMBLY

7 - 1

MC1

MP1

MP9 MP10

W2

W1

MP3

MP4

MP5

MP6

MP7

MP8

ICOM

LCD-STICKER

J1 6510004880 Connector MR-DS-E 01 1

MP1 8010019060 2601 chassis 1MP2 8110007820 2601 cover 1MP3 8210019340 2622 front panel 1MP4 8930059010 2622 keyboard 1MP5 8930059090 2622 LCD plate 1MP6 8210019350 2622 reflector 1MP7 8610011180 Knob N292 1MP9 8810008660 Screw PH BT M3 × 8 NI-ZU 8MP10 8810008660 Screw PH BT M3 × 8 NI-ZU 2MP11 8810008660 Screw PH BT M3 × 8 NI-ZU 2MP12 8810008760 Screw PH BT M3 × 8 NI-ZU 3MP13 8810008660 Screw PH BT M3 × 8 NI-ZU 1MP14 8810009990 Screw PH BT M3 × 8 ZK 4MP15 8810009990 Screw PH BT M3 × 8 ZK 2MP16 8930059100 2622 LCD filter 1MP17 8930059000 2601 SP net 1

[CHASSIS PARTS]

ORDERNO.

REF.NO. DESCRIPTION QTY.

R14 7210003020 Variable resistor EVU-F2KFK1 B14 1

SP1 2510001220 Speaker C052SB500-13 1

J1 6450002210 Connector 3017-8821 1

W1 8900010500 Cable OPC-1046 1

DS11 5030002510 LCD L2-0607TAY 1

EP2 8930059170 LCD contact SRCN-2622-SP-N-W 1

MP1 8930059110 2622 spring 1

[FRONT UNIT]

ORDERNO.

REF.NO. DESCRIPTION QTY.

J4 6450000140 Connector HSJ0807-01-010 1

W2 8900011861 Cable OPC-1195A 1

MP1 8510002280 VCO shield plate (A) 1MP4 8510014940 2601 VCO case 1MP5 8510014950 2601 VCO cover 1MP6 8510014910 2601 filter case 1MP7 8510015110 2602 M-plate 1MP9 8930058990 Shield sponge (V) 1MP10 8930058840 Shield sponge (T) [GEN] only 1MP11 8930058840 Shield sponge (T) 1

[MAIN UNIT]

ORDERNO.

REF.NO. DESCRIPTION QTY.

MC1 0800005780 Microphone HM-100N 1

W1 8900011780 Cable OPC-1194 1W2 8900000730 Cable OPC-049 1

MP1 8010019170 2601 mobil bracket assembly 1MP3 8820000530 Flange bolt M4 × 8 NI 4MP4 8810000470 Screw PH M5 × 12 (+-) 4MP5 8810005840 Screw PH A M5 × 20 4MP6 8850000150 Flat washer M5 NI BS 4MP7 8850000390 Spring washer M5 4MP8 8830000120 Nut M5 4MP9 6910004210 731 mic hanger set 1MP10 8310054770 1705 LCD seal (F) 1

[ACCESSORIES]

ORDERNO.

REF.NO. DESCRIPTION QTY.

Screw abbreviations A,BT: Self-tapping PH: Pan headZK: Black BS: BrassNI: Nickel NI-ZU: Nickel-Zinc

Page 26: Icom Ic f121 Display

MP15 (C)

R14 (F)

J1 (F)

MP16 (C)

DS11 (F)

MP5 (C)

W1 (F)

MP12 (C)MP1 (F)

FRONT UNIT

Unit abbreviations (F): FRONT UNIT (M): MAIN UNIT (C): CHASSIS PARTS

EP2 (F)

MP6 (C)

MP7 (C)

MP3 (C)

SP1 (F)

MP4 (C)

MP17 (C)

MP11 (C)

MP7 (M)

MP1 (C)

J1 (C)

MP10 (C)

MP10 (M)

MP1 (M)

MAIN UNIT

MP9 (M)

MP11 (M)

MP9 (C)

MP6 (M)

MP2 (C)

MP14 (C)

MP9 (C)

MP5 (M)

MP4 (M)

MP13 (C)

J4 (M)

W2 (M)

MP9 (C)

7 - 2

Page 27: Icom Ic f121 Display

SECTION 8 SEMI-CONDUCTOR INFORMATION

• TRANSSISTORS AND FET’S • DIODES

B

E

C

B

E

C

B

E

C

B

E

C

B

E

C

B

C

EG

G

D

D

S

S

S

D

G

G

S

D

D

S

G2

G1

B

E

C

B

E

C

B

E

C E1

B1

B2

C1

C2

E1

E2

B2

C1

B1

C2

2SA1577 T106 Q 2SC3356 T1B R25 2SC4213 B 2SC4215 O

2SC4226 T1 R25 2SC5107 O 2SD1664 T100Q 2SJ144 GR 2SJ377

2SK880 Y 2SK1829 3SK293 3SK299 T1 U73 DTC114TUA T106

DTC144EUA T106 DTC363 EK XP1214 XP6501 AB

(Symbol: HQ) (Symbol: R25) (Symbol: AB)

B

E

C

2SC4116 BL (Symbol: LL) (Symbol: QO)

(Symbol: R25) (Symbol: MFO) (Symbol: DAQ) (Symbol: VG) (Symbol: 4L)

(Symbol: XY) (Symbol: K1) (Symbol: UF) (Symbol: U73) (Symbol: 04)

(Symbol: 26) (Symbol: H27) (Symbol: 9H) (Symbol: 5N)

S

D

G

D

S

G2

G1

B

E

CA C

A C A C A C

A C A C A C A C A C

A C

BLACK LINE

UM9401F

MA8056 M MA77 MA2S728 MA2S111 HVC376B

HVC375BHVC362HVC350B

1SV3071SV239 1SS375-TL

(Symbol: 5-6)

(Symbol: none)

(Symbol: 4B)(Symbol: B)(Symbol: A)(Symbol: B9)

(Symbol: B8)(Symbol: V2)(Symbol: B0)DSA3A1DAP222(Symbol: Green)(Symbol: P)

C

A1

A2

DAN222TL (Symbol: N)(Symbol: TX)

DA221 TL (Symbol: K)(Symbol: TC)(Symbol: FH)

A

C2

C1green

A C

8 - 1

Page 28: Icom Ic f121 Display

SECTION 9 BOARD LAYOUTS

9-1 FRONT UNIT• TOP VIEW

8V

1

toMicrophone

7

2 8J1

AF

OM

ICE

GN

D

CLO

PT

TM

ICC

LI

9 - 1

Page 29: Icom Ic f121 Display

1

16

148

24

13

12

36

37

25

1 7

14 8

17

3233

48

49

8 5

1 4

64

1 39

2to MAIN unit J2

40

J2

DIM

DA

ST

OP

T3

OP

T2

OP

T1

PT

TOP

TT

IR

EM

SC

KS

IS

OC

IRQ

CC

SM

ICE

PT

TN

CB

EE

PP

WO

N8V GN

D

GN

DTO

NE

TE

NC

NO

ISE

XO

EE

XS

TU

NLK

PLS

TC

DE

CS

DE

CO

V12

RS

SI

LVIN

TE

MP

BAT

VN

CN

C5V

CP

U5

AF

O

113

214J3

GN

DG

ND

PW

ON

OP

T1

P87

P86

CP

U5V

GN

DG

ND

GN

DN

MI

RE

SO

PT

2N

C

9 - 2

• BOTTOM VIEW (FRONT UNIT)

Page 30: Icom Ic f121 Display

ANTCHASSISJ1

to DC cable

W2

IC3

1

4

8

5

18

169

1

8

16

9

1

to Optional unit

15

30 16

J1

GN

D5V VC

CM

MU

TE

AF

ON

OB

EE

PO

RM

UT

ED

ET

DIS

CR

EM

CC

SC

IRQ

SO SI

SC

K

PT

TI

PT

TOM

CO

TM

CIN

NC

BU

SY

NC

SIG

OO

PT

1O

PT

2O

PT

3G

ND

DA

ST

OV

12O

V12

DIM

40 2

39 to FRONT unit J2 1

J2

DA

ST

OP

T3

OP

T2

OP

T1

PT

TOP

TT

IR

EM

SC

KS

IS

OC

IRQ

CC

SM

ICE

PT

TN

CB

EE

PP

WO

N8V GN

D

GN

DTO

NE

TE

NC

NO

ISE

XO

EE

XS

TU

NLK

PLS

TC

DE

CS

DE

CO

V12

RS

SI

LVIN

TE

MP

BAT

VN

CN

C5V

CP

U5

AF

O

VCC1

11

J6

DIMHORNGNDAFOGNDDISCGND

INGNDPTT

to Optionalcable OPC-617

SP-

1

tospeaker

2J7

SP

+

9-2 MAIN UNIT• TOP VIEW

9 - 3

Page 31: Icom Ic f121 Display

SP

14 8

1

1

8

16

9

1

7

14

8

7

12

24

1

13

9 - 4

• BOTTOM VIEW (MAIN UNIT)

Page 32: Icom Ic f121 Display

SECTION 10 BLOCK DIAGRAM

DISC

MIC

AFOBEEP

8V

MCOT

MCIN

BEEP

O

RSSI

MIXER

8VCSFT

19.6608 MHz

BEEP

NOISDIMCDECSDEC

EPTTLVINRSSI

F

D

E

DETDISC

J6

MAIN UNIT

FRONT UNITJ1

CTCSS/DTCS DEC

5/2 TONE DEC

J1

BEEP0

182.35 MHz-220.35 MHz

46.35 MHz

450 kHz

SQIN

DET

45.9 MHz

15.3 MHz

HVC362D21

BAL

REF

136-174 MHz

TENC

NWC

AF VR

PWR

S2-S7

JACKMIC

ACC

M62363FP-650CIC6

BU4066BCFVIC14

IC1 TA31136FN

CPU

NOIS

TMUTT2T1T2

AF ON

DATA LINE

RX LINE

TX LINE

COMMON LINE

CONTROL LINE

Explanatory notes

DUSE

TENC

REM

TONE

RSSI

TX VCO

F

RX VCO

RXC

TXC

8V

LVIN

OPTION

IF IC

D/A

DISC

MCOT MCIN

SIGO SIG

F

EPTT

HORNO

DIMDIM

HORN

PTT

AFO

IN

8V

EXOELCSLSCKLSO

AFO

MIC

PTTI PTT

CLI CLO

SENC0-3

CENC0-2

RESET

8VVCC

CPU5 CPU5

HV

PWON

RXC

TMUT

VCC

8V

R8V

T8V

5V

CDEC

SDEC

AFVI

POSW

KS0-1

KR0-2

RMUT

MMUT

TXC

SWANALOG

Q30 DTC144EUQ26 2SA1577

REGR8

2SK1829Q1

AGCLPF

R59

PTTO

2SC3356Q8

AMPDRIVE

DTC144EUQ5

SWW/N

DTC144EUQ3

FILSW

AN78L05MIC10

IC17

BUSY

RXC

NWC

RMUTE

RMUT

TMUTHORNO

BU40948BCFV

D42DAP222

CPU5REG

W2

2SJ144Q31

SWLINE

2SK880Q18

BUFF

2SC5107Q12

BUFF

2SC5107Q11

BUFF

2SC5107Q10

BUFF

J4

SP

POSW

R14

D29 MA2S111Q36 DTC144EUQ35 DTC363EK

MUTEAF

LA4425AIC8

AMPAF

TA75S01FIC15

AMPPRE

D23 DA221

Q29 DTC114TUQ25 2SD1664

REGT8

TA7808FIC9

REG+8

Q28 XP6501Q27 2SA1577

REG+5

NJM12902VIC16

HPF

HPF

ALFYM450F=K

FI2

CERAMICBPF

2SC4215Q4

AMPIF

FL-335FI1

XTALBPF

TA75S01FIC2

AMPAPC

3SK293Q2

AMPRFBPF

HVC375BD8

BPF

HVC375BD4

BPF

HVC350BD9

BPF

HVC350BD10

BPF3SK299Q3

1SV239D18

MODFM

NJM12902VIC5

AMP

NJM12904VIC5

AMP

CR-520X1

CDBC450CX24

X1

CR-740X2

2SC4116Q34

X3

MB15A02PFV-1IC4

ICPLL LOOP

FIL

Q16 DTC144EUQ15 XP1214

SWVCO

2SC4116Q17

RIPPLEFIL

D16, D31 HVC376B2SC4226Q13

D33, D34 HVC376B2SC4226Q14

D14, D15MA77

SWTX/RX

S-AV33 [25W]S-AV32 [50W]

IC3

AMPPWR

D48 1SV307D6 MA77D5 UM9401FD3 XB15A407 [50W]D2 UM9401F [25W]

SWANT

NJM12902VIC16

RESTO-RATION

MA77D4

SWSHIFTS-80942CNMC-G9C

IC2

HD6433687A05FPIC1

RESET

EXP

MMUTCTRL

HN58X2464TIIC3

EEPROM

LC75834WIC6

SEG1-32COM1-4

DTC114TUQ5

DTC114TUQ2

LIGT

2

LIGT

1

DRIVERLCD

CTRLLIGT

DS1-9SML-311YT

CTRLDIM

Q24 DTC144EUQ23 2SJ377

POWERSW

D28 MA2S728

SWMUTE

2SC4215Q19

REF

1SS375D1, D11

DETPWR

NJM12902VIC5

BEEP

LPF

NJM12902VIC5

LPF

NJM12902VIC16

LPF

NJM12902VIC16

LPF

NJM12904VIC5

SIG

LPF

LPF

LPF LPFLPF LPF

KEY × 6

L2-0607TAYDS11

LCD

REM

SIGO

BEEPO

AFONO

MMUTE

PTTI

BUSY

RMUTCTRL

MMUT

MMUTE D43DAP222

AFONO

AFON

D44, D45MA2S111

AFONCTRL

10 - 1

Page 33: Icom Ic f121 Display

SECTION 11 VOLTAGE DIAGRAMS

11-1 FRONT UNIT

J2

DIM

DAST

OPT3

OPT2

OPT1

PTTO

PTTI

REM

SCK

SI

SO

CIRQ

CCS

MIC

EPTTNCNCNC

BEEP

PWON

8V

GND

GND

TONE

TENC

NOIS

EXOE

EXST

UNLK

J3

NMI

RESRES

OPT2

NC

GNDGNDGNDGND

GNDPWON

OPT1

P87

P86

CPU5V

PLST

CDEC

SDEC

OV12

RSSI

LVIN

TEMP

BATV

5V

CPU5

AFO

toMAINunit J2

IC1HD64F3687

123456789

10111213141516

17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32

33343536373839404142434445464748

49505152535455565758596061626364

P86/AN6P87/AN7AVCCX2X1VCLRESTESTVSSOSC2OSC1VCCP50/WKP0P51/WKP1P34P35

P36

P37

P52/

WKP

2P5

3/W

KP3

P54/

WKP

4P5

5/W

KP5/

ADTR

GP1

0/TM

OW

P11/

PWM

P12

P56/

SDA

P57/

SCL

P74/

TMR

IVP7

5/TM

CIV

P76/

TMO

VP2

4P6

3/FT

I0D

0

P62/FTI0C0P61/FTI0B0

NMIP60/FTI0A0P64/FTI0A1P65/FTI0B1P66/FTI0C1P67/FTI0D1

P85P86P87

P20/SCK3P21/RXDP22/TXD

P23P70/SCK3_2

P71/

RXD

_2P7

2/TX

D_2

P14/

IRQ

0P1

5/IR

Q1/

TMIB

1P1

6/IR

Q2

P17/

IRQ

3/TR

GV

P33

P32

P31

P30

P83/

AN3

P82/

AN2

P81/

AN1

P80/

AN0

P84/

AN4

P85/

AN5

C74

47p

C50

47p

C38

47p

C54

47p

L2 1.0µPWON

BEEP

DIMTONEDASTTENCOPT3NOISOPT2EXOEOPT1EXSTPTTUNLKPTTIPLSTREMCDECSCKSDECSIOV12SORSSICIRQLVINCCSTEMPMICBATVEPTT

KS0

KS1

R56

1k

UN

LKK

R0

CEN

C2

CEN

C1

CEN

C0

KR

1K

R2

SCK

SO

8765

1234

VCCWPSCLSDA

A0A1A2

VSS

IC3HN58X2464TI

R58

10k

R68

10k

R541k

R791k

SI

OPT2OPT1OPT3

P87P86

PWONLCSNMI

EXOEEXST

R52

1k

R50

1k

POSWDIM

NO

ISC

IRQ

CC

SPT

TEP

TT

AFVI

CD

ECSD

ECO

V12

RSS

ILV

IN

CLO CLI

D5MA2S111

CP1

C35 0.1

TEMPBATVRES

R51 100k

SENC0SENC1

R4812k

R4912kD

4M

A77

C34

470p

R47

12k

C3368p

C32

15p

X1CR-520

R4510

C31

22p

C78

0.00

1

R461M

CD

NC

OUTVDDVSS

R67

10kC30

0.02

7

IC2S-80942CNMC-G9C

LSOLSCK

DU

SE

DU

SE

Q3DTC144EU

C19

0.1

R29

18k

C82

47p

R284.7k

14+-

1213

IC5NJM12902V

TENC

C17

820p

C85

47p

C16

0.1

R2747k

R2647k

C15

0.01

5

R2447k

R25

22k

R22 22k

R21 56k

R20 180k

C14

0.00

1

CENC0

CPU5V CPU5V

5V

5V

8V

5V

8V

CENC1

R65 1kREM

CENC2

7

IC5NJM12902V

65

-+ TONE

BEEP

C24

68p

C69

47p

R3968k

C230.0082

R3868k

1

IC5NJM12902V

23

-+

C21

0.00

56

C22

180p

R3768k

SENC3R33 22k

R3668k

C20

0.00

27

R3568k

R34

22k

R32 47kSENC2

SENC1R31 100k

SENC0R30 220k

C29

10

11GNDV+

4IC5NJM12902VC

280.

1

-+

910

IC5NJM12902V

8

C84

47p

R44 150kC27 270p

C76

0.1

C41

0.00

1

R43

33k

R42

39k

C25

0.01

C260.1

R4110k

R40

47k

R81

100k

R80

100k

J18VCLOAFOPTTMICEMICGNDCLI

C81

0.00

1

R16 1k

L1 10µ

R76 1k

C7

47p

C8

0.00

1

C9

0.00

1

C10

0.00

1

C11

47p

C12

0.00

1

R19100k

D3

MA8

056

CLO

CLI

R18100k

D2MA8056

PTTI

D1

MA8

056

BEEP

KR2

KR1

KR0

KS1

KS0

POSW

R59

RV-

150

C1

680p

C3

47p

C4

47p

C5

47p

C79 0.1

DS11L2-0607TAY

C2 47p

C80

0.1

R78

47k

R60

100

k

R75

10k

CO

M2

CO

M1

SEG

32SE

G31

SEG

30SE

G29

SEG

28SE

G27

SEG

26SE

G25

SEG

24SE

G23

SEG

1SE

G2

SEG

3

COM3COM4

SEG

4SE

G5

SEG

6SE

G7

SEG

8SE

G9

SEG

10

EXO

ELC

SLS

CK

LSO

CO

M1

CO

M2

CO

M3

CO

M4

SEG

1SE

G2

SEG

3SE

G4

SEG

5SE

G6

SEG

7SE

G8

SEG

9SE

G10

SEG

11SE

G12

SEG

13SE

G14

SEG

15SE

G16

SEG

17SE

G18

SEG

19SE

G20

SEG

21SE

G22

SEG

23SE

G24

SEG

25SE

G26

SEG

27SE

G28

SEG

29SE

G30

SEG

31SE

G32

CO

M1

CO

M2

CO

M3

CO

M4

SEG

1SE

G2

SEG

3SE

G4

SEG

5SE

G6

SEG

7SE

G8

SEG

9SE

G10

SEG

11SE

G12

SEG

13SE

G14

SEG

15SE

G16

SEG

17SE

G18

SEG

19SE

G20

SEG

21SE

G22

SEG

23SE

G24

SEG

25SE

G26

SEG

27SE

G28

SEG

29SE

G30

SEG

31SE

G32

SEG22SEG21SEG20SEG19SEG18SEG17SEG16SEG15SEG14SEG13SEG12SEG11

R14

10k AFVI

5V

S1

S2

C6

47p

S3

C37

47p

S4

S7

S6

S5

LIGT1

Q12SC4116

R11

390

R122.7k

R74 10kR73 10k

R86 100k

R85 100k

R87 100k

R88 100k

R89 100k

R84 100k

R82 100k

R83 100k

Q2DTC114TU

Q5DTC114TU

5V

FRONT UNIT

DS1-DS9SML-311YT

R7180

DS3 DS2 DS1 LIGT2

DS6 DS5 DS4

R8180

R9470

DS9 DS8 DS7

DS2-10 SML-311YT

tomicJack

C77

0.04

7

R77 1.5k

R15 1k

5

4

123

C75

0.1

SEN

C3

SEN

C2

PLSTDAST

R55

1k

BEEP

R57

1M

C36

0.1

R2347k

C83

47p

R90390k

IC6LC75834W

373839404142434445464748

1 2 3 4 5 6 7 8 9 10 11 12

131415161718192021222324

252627282930313233343536

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36

COM3 S24S23S22S21S20S19S18S17S16S15S14S13

COM4VDDVLCDVLCD1VLCD2VSSOSCINHCECLDI

P1/S

1P2

/S2

P3/S

3P4

/S4

P5/S

5P6

/S6

P7/S

7P8

/S8

S9 S10

S11

S12

S25

S26

S27

S28

S29

S30

S31

S32

S33

S34

CO

M1

CO

M2

Dim ON: 6.2V OFF: 7.2V

Dim OFF: 0V ON : 5V

LIGHT ON: 5V OFF: 0V

TX: 0VRX: 4.9V 7.9V

19.7 MHz2.1Vp-p

5.0V

CTCSS : 0VDTCS : 5V

5.0V

5.0V

MEASUREMENT CONDITIONS VOLTMETER Amplitude(Oscilloscope) : 100 MHz Frequency : 155 MHz Transmission : 25 W

11 - 1

Page 34: Icom Ic f121 Display

11-2 MAIN UNIT

J1SCK

SI

SO

CIRQ

CCSGND

GND

DISC

DET

BEEPO

AFONO

OV12

OV12

DAST

OPT3

OPT2

OPT1

SIGO

BUSY

R266 47k

R267 27k

R268 10k

R26

5

1

8kR

270

100

kR

264

68k

R26

9

1

00k

R26

3

1

MR

262

1M

R26

1

1

M

R271 100MIC

CP24

CP23

C31

10.

001

SCK

SIOV12

SODASTCIRQ

CCSOPT3REM

OPT2DISCOPT1

DETSIGO

BEEPO

RMUTE

MMUTE

REM

RMUTE

MMUTEMCIN

MCOT

PTTO

PTTI

BUSYAFONO

MAIN UNIT (1)

toOptionalunit

J2

DIM

DAST

OPT3

OPT2

OPT1

PTTO

PTTI

REM

SCK

SI

SO

CIRQ

CCS

MIC

EPTT

NC

BEEP

PWON

8V

GND

GND

TONE

TENC

NOIS

EXOE

EXST

UNLK

PLST

CDEC

SDEC

OV12

RSSI

LVIN

TEMP

BATV

NC

NC

5V

CPU5

AFO

J1

8VCL0AFOPTTMICEMICGNDCLI

tomicjack

J3

CPU5V

P86

P87

OPT1

PWON

GND

GND

NC

OPT2

RES

NMI

GND

GND

GND

J2

DIM

DAST

OPT3

OPT2

OPT1

PTTO

PTTI

REM

SCK

SI

SO

CIRQ

CCS

MIC

EPTT

BEEP

PWON

8V

GND

GND

TONE

TENC

NOIS

EXOE

EXST

UNLK

PLST

CDEC

SDEC

OV12

RSSI

LVIN

TEMP

BATVNCNC

NC

5V

CPU5

AFO

FRONT UNIT

R14

71k R

148

1k R14

91k

R32

71k

R32

61k

R32

51k

R14

31k

R15

01k

R14

11k

C20

4

4

7p

C20

1

0

.1C

202

0.1

C20

7

0

.001

C20

8

0

.001

C20

9

0

.001

C21

0

0

.001

C20

3

0

.1

C22

6

4

7pC

382

220

p

R145 1k

R144 1k

R146 1k

DIM

DAS

TO

PT3

OPT

2

OPT

1PT

TOPT

TIBU

SY

EXO

EEX

STR

EMPL

ST

TONE

TENC

NOIS

CDEC

SDEC

CCS

MAINUNIT(2)

PWO

NBE

EP

EPTT

BATV

C16

60.

01

R11047

C16

20.

01

R22047k

R22147k

REF

BAL

C16310

R22210k C

164

0.01

R21

910

0k

R31

410

0k

R31

510

0k

D21

HVC

362

L10

1.8µ

BUS LINE2

C161100p

C16

09p

X2CR-740

R10

547

kD

20M

A2S1

11

R10

682

kC

158

100p

R10

41.

2k

C15

647

p

C15

710

0p

Q192SC4215

C14

20.

001

R10

11k

C14

30.

001

C14

10.

001

R10

010

k

910111213141516

87654321

CLOCKDATALEFCNCFOUTPB

FINLD

GNDDO

VCCVP

OSCOUTOSCIN

VCC

IC4MB15A02PFV-1

C15

2 47

P

C15

3 47

P

C15

4 47

PC

151

0.1

R10

315

0k C15

527

0p

C14

00.

1

L291.8µ

UNLK

SCKSOPLST

C14

90.

22

R971

R95220

C14

61 C

138

47p

R89

10k

C14

73.

3

R96

2.2k

Q182SK880

R92

100k

R91

33k

C13

20.

1R90

47k

LVIN

CP1

C14

533

0p

C31

40.

01 R98

2.2k

C14

810

Q172SC4116

C35

36p

D34

HVC

376B

D33

HVC

376B

L3944n

C14

447

p

L283.3µ

D31

HVC

376B

D16

HVC

376B

L3867n

C37

64p C

360

5p

C35

58p

R99

1k

L273.3µ

L37

10µ

C12715p

L2692n

C13

63p C

134

10p

C12633p

R853.9k

C11

433

pC

115

33p

W4

Q142SC4226

R791.8k

C11

60.

01

C11

747

0p

C124270p

L2567n

C12

91p

D18

1SV2

39

R86

120k

C13

11p C

133

10p

C12368p

R843.9k

C12

118

pC

122

33p

R3284.7

Q132SC4226

R831.8k

C11

90.

001

C12

047

0p

3

2

1

4

5

Q15XP1214

EP1

R21

156 C

299

12p

C29

812

p

C30010p

L3233n

C1130.75p

C1180.5p

R31

61kC

357

0.1

TXC

C13

90.

1

R77

10k

Q16DTC144EU

C11

147

p

R31

71k

R20

947

k

C2000.1

R210100K

TEM

P

C3501

C287R291100k 0.0033

MO

D

F

C3370.001

12345678 9

10111213141516

IC1TA31136FN

OSCINOSCOUTMIXOUTVCCIFINDECFILOUTFILIN

MIXINGND

N-RECN-DET

RSSIIFOUTQUAD

AFOUTR44

VCC

220k

C70

120p R45

150k

R46

2.2k

R42

100k

C68

100p

C71

0.1

I O

FI2ALFYM450F=K

R40

1.5k

R3947

C31

20.

1

L33

0.82

µ

C30

77pC

305

56p

C3064p

Q342SC4116

Q382SC4213

C69

120p

SQIN

R23

61.

2k

R23

768

0k

L35

0.22

µ

C3090.01

C30410p

R43

470

C66

0.00

1

DET

C34

80.

001

RSS

IN

OIS

C6347p

C650.001

C6282p

R37

2.7k

(N/W

)4.

7k(N

/M)

C64

0.00

1

NW

C

Q5DTC144EU

X1

CD

BC45

0CX2

4

R36

3.9k

R38

100k

C75

10C67

0.00

1

R29

068

0

R34

100k

C60

0.01

C58

0.00

1R

3315

0C

101

1.5p

R8V

R35

100

C59

0.00

1

Q42SC4215

b

PTTO

PTTI

IC14BU4066BCFV

1234567

141312111098

I/OO/IO/II/OCONT.BCONT.CVEE

VDDCONT.ACONT.D

I/OO/IO/II/OIC17

BU4094BCFV1234567

16151413121110

STRDCLKQ1Q2Q3Q4

VDDQEQ5Q6Q7Q8QS

8 9VSS QS

TXC

MM

UT

R13

810

0k

C37

80.

0012

R11

718

0k

+-

1213

14

IC16NJM12902V

R12

147

k

R120 10k

R11

95.

6k

R11

812

k

R11

412

k

C1690.047

C1680.047

R11

53.

9k

R33

447

0k

C1670.047

R3304.7k

R333100k

R28

510

0

DIS

C

CP2

DET

AFSW

DISC

R1228.2k

R12

510

0k

R32

322

k

R123100k

b

C1810.1

R12

44.

7k C1820.0056

R129100

R12

810

k

R13

022

k

C17

647

p

MOD

AFONO

MMUT

MMUTE

EXOE

TMUTHORNO

BUSY

EXSTSOSCKRXC

NWCRMUTE

BEEPO

AFON

RMUT

R13

910

0k

RM

UT

-+

23

1

IC5NJM12904V

R18

512

0k

R18

322

0k

C17

70.

0056 R184

33k

C17

815

0pR

186

100k

R18

710

k

R188560

C17

90.

1

R13

527

0k

R13

427

k

R13

318

0k

SIG

C17

30.

1

C17

20.

0082

R33

233

kC

509

0.1

R13

610

k R324100k R

137

68k

C17

50.

001

C3591

R11

227

k

R11

13.

3k

R11

32.

2k

C18

047

123456789

101112 13

1415161718192021222324

VIN1VOUT1VOUT2VIN2VDDLDCLKDIVIN3VOUT3VOUT4VIN4

VIN8VOUT8VOUT7

VIN7GND

RESETVDAREF

DOVIN6

VOUT6VOUT5

VIN5

IC6M62363FP-650C

C17

410

5VCPU5V

8V

R2311

C2830.001

DET

TENC

DASTSCKSO

BAL

R21

547

0

SQIN

REF

AFSW

T2 T1

SCK SI

SO

CIR

Q

R14

21k

RSS

I

AFOCP25

TEMPLVIN

R126470

C18

30.

1C

361

0.1

C184 680p

R12739k

76

IC5NJM12904V5

-+

BUS LINE1

5V

NC

NC

VCC

C31

00.

001

C16

50.

01

R931k

D37MA2S111

C13

50.

001

C35

68p

R801k

R781k

C29722p

RXC

V+GND

8

4

IC5NJM12904V C

248

0.00

1

C3083p

0.1

0.1

C385

C384 C61100p

OV12

R11612k

C17

00.

001

TON

E

C28

20.

1

a

b

c

d

VCC

e

C28

60.

01D42 W

6

W8

W9

W10

W7

DAP

222

D44

MA2

S111

D45

MA2

S111

D43

DAP

222

D51

1SS3

75

550mVrms(40mVrms at mic terminal)

5.0V

15.3 MHz940mVp-p

6.9V

TX: 4.3VRX: 0V

TX: 0VRX: 4.3V

3.1V

4.9V

WIDE:1.1VNARROW:1.3V

4.9V

TX: 0VRX: 7.2V

WIDE: 5.0VNARROW: 0V

MEASUREMENT CONDITIONS VOLTMETER Amplitude(Oscilloscope) : 100 MHz Frequency : 155 MHz Transmission : 25 W

11 - 2

Page 35: Icom Ic f121 Display

Q202SC4116

MAINUNIT(1)

BUS LINE2

C11

047

0p

L41

68n

R75

120k

C10

50.

001

Q122SC5107

R8V

C10

40.

001

R74

120k

L22

68n

R76

470

R73

100

C10

90.

001

C10210p

R71

100

Q112SC5107

R31

08.

2k

R31

122

0

C33

50.

001

C30

10.

001

R23

48.

2k L21

82n

Q102SC5107

C10010p

D14MA77

D15

MA7

7

R69

4.7k

R50

10k

R23

51k C

303

0.00

1

R70

100

C10

80.

01 R68

10k

R67

100

R33

11kC99

0.00

1

C9315p

Q82SC3356

R62

56 C33

10.

001

R63

15k

C95

0.00

1

R60

100

C9215p

C51015p

L1847n

C90

18p

C89

18p

L4347n

C38

122

p

C38

022

p

C10

647

p

R61

47L1

982

n

C96

0.00

1

C97

47p

IN VCC

1VC

C2

OU

T

IC3

T8V T8V

HVT8V

S-AV33 [25W]S-AV32 [50W]

5

1 2 3 4

6

EP2

EP3

C86

47p

C87

0.0

01

C34

2 0.

33

C36

4 47

0p

C84

47p

C85

0.0

01

C91

22

C37

2 47

0p

FI4NFM60R-20T152

FI3NFM60R-20T152

FI5NFM60R-20T152[50W]D

40D

AN22

2

C83

22p

C51

410

p[50

W]

C51

310

p[50

W]

L16AS080547-47N

C82

20p

D2UM9401F[25W]

D3XB15A407[50W]

C12

470p R8

100

R2141.5k

C10

70.

001

C13

47p

R21

61.

5k

C140.001

L3AS080547-47N

L2AS080547-47N

C9

22p

C8

22p

C7

24p

C50

8 18

p

C6

22p

D1

1SS3

75C

100.

001

R510k[25W]27k[50W]

C3

470p

R4

270

C4

18p

R2

47

R347

D11

1SS3

75

C11

0.00

1R

727

0C

547

0p

R633k[25W]27k[50W]

W1J1

C2

22p

C1

18p

R1

100k

L1AS080547-47N

C35

222

FI1

R8V

VCC

T8V

VCC

VCCHV

FL-335

C56

18p

C55

4pR

3110

0

C57

0.00

1

L13

1µC

510.

001

R32

150

C52

27p

C53

0.01

C54

0.00

1

R29

100

R33

51k C50

0.00

1

C48 47p

Q33SK299

C4918p

R28

C401.5p

12

L12

0.1µ

L42

4.7µ

R27

470

R26

470

C30

210

p

C44

3p L11

56n

D10

HVC

350B

C45

0.00

1

R23

150k

C43

0.00

1

R21

220k

C39

0.00

1D

9H

VC35

0BC

420.

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10k

T2

C33

92.

5p

R20

Q23SK293

C32

0.00

1

C33

347

p

R16

270

R15

270k C30

22p L8 68n

C29

4p

C33

0.1

C34

0.00

1

R31

222

0k

R19

100k

R12

10

C31

0.1

R17

100

C35

1

C37

0.00

1

L9 56n

C3430.01

R31918k

C3630.1

R18

1C38

0.00

1

D49

DA2

21

D50MA2S111

R31

84.

7k

R32

110

k

D27

MA2

S111

R320470k

RSS

I

T1

R1410k

R11

100k

C20

0.00

1

C27

0.00

1

C38

30.

1

C28

0.00

1D

8H

VC37

5B

C26

0.00

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R13

100k

D4

HVC

375B

L7 6

8n

C21

1.5

p

C256p

L31

56n

C18

6p

C190.001

D6

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7

D7

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C17

12p

C15

30p

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330

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k

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L4 0.50

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231

5

C790.22

R56 150k

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W]

IC2TA75S01F

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560k

C76

0.01

C72

0.00

1

R49

PRF1

8R

4818

0k

C81

0.00

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C77

0.00

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R53

1

R58100

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[50W] only

[50W] only

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BEEP

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0[G

EN],

[USA

]

C2880.1

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R22447

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DET

EPTT

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810

0k

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91M

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R22

71M

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FR23068k

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DE

SIG

SIG

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GND

DISC

GND

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GND

PTTGND

toOPC-617

BUS LINE1

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e

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d

c

b

a

MAIN UNIT (2)

6.4V

6.0V

TX: 6.9VRX: 0V

TX: 2.9VRX: 0V

TX: 2.2VRX: 2.0V

TX: 0VRX: 2.7V

TX: 0VRX: 3.7V

TX: 0VRX: 5.6V

TX: 0.2VRX: 2.1V

4.9V

TX: 0VRX: 7.2V

TX: 0VRX: 0.7V

TX: 0VRX: 6.4VLo level

1~3dBm

MEASUREMENT CONDITIONS VOLTMETER Amplitude(Oscilloscope) : 100 MHz Frequency : 155 MHz Transmission : 25 W

TX: 5.7VRX: 0.2V

TX: 6.0VRX: 0.2V

TX: 2.9VRX: 1.8V

TX: 0.1VRX: 4.8V

AF ON: 4.5V OFF: 0V

TX: 7.9VRX: 0V

TX: 0VRX: 7.8V

7.9V

5.0V

5.0V

13.2V

POWER ON: 4.9V OFF: 0V

4.4V

11 - 3

Page 36: Icom Ic f121 Display

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Page 37: Icom Ic f121 Display

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