Reference Series 7520a · 2019-04-07 · 2 • If the amplifier’s fuse must be replaced, use only the same type and rating as that of the original. Do not substitute another kind

Reference Series

7520a 2 CHANNEL POWER AMPLIFIER

SERVICE MANUAL

Infinity Systems, Inc.

250 Crossways Park Dr. Woodbury, New York 11797 Rev0 5/2004

- CONTENTS -

SPECIFICATIONS ………………………………….……..1 FEATURES/TEST CONDITIONS……..…………………2 CONTROLS/CONNECTIONS………….……..…...…..…3 INSTALLATION………………….……...……..…...…...…5 BASIC TROUBLESHOOTING..…….…….………………6 TYPICAL SYSTEM WIRING..…….…….……………..…7 EXPLODED VIEW/PARTS LIST…….….….…………....8 MECHANICAL PARTS LIST……………..…………........9 AMPLIFIER BLOCK DIAGRAM…………………………10 P.C.B. DRAWINGS….…………………………………….11 ELECTRICAL PARTS LIST ……………………………. 14 IC/TRANSISTOR PINOUTS..……………………….. …..17 SCHEMATICS………..……………………….…………...19 PACKING……..…………………………………………....21

Reference 7520a Specifications

Output Power: 97W RMS x 2 channels @ 4 ohms; ≤1% THD + N (14.4V supply) 142W RMS x 2 channels @ 2 ohms; ≤1% THD + N

283W RMS x 1 channels @ 4 ohms; ≤1% THD + N Signal-to-noise ratio: 83dBA (reference 1W into 4 ohms) Dynamic power: 190W @ 2 ohms Effective damping factor: 6.389 @ 4 ohms Frequency response: 10Hz – 69kHz (–3dB) Maximum input signal: 5.5V Maximum sensitivity: 240mV DC Offset <50mV (-50%) Output regulation: .078dB @ 4 ohms Idle Current 900mA Input Impedance 22kΩ Max Current Draw 22A @ 4 ohms 37A @ 2 ohms Dimensions: 12 x 11 7/16 x 2 11/16” (L x W x D) (305mm x 290mm x 68mm) Fuse: 30A

Infinity continually strives to update and improve existing products, as well as create new ones. The specifications and details in this and related JBL publications are therefore subject to change without notice.

Power Amplifier Reference 7520a

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2

2

• If the amplifier’s fuse must be replaced, useonly the same type and rating as that of theoriginal. Do not substitute another kind.

The Reference amplifiers are capable of delivering high power levels, and require a reliable connection to the vehicle’s electrical system in order to perform optimally. See Figure 1 for connection location. Please adhere to the following instructions carefully.

GROUND CONNECTIONConnect the amplifier’s Ground (GND) terminalto a solid point on the vehicle’s metal chassis, as close to the amplifier as possible. Refer to thechart below to determine minimum wire-gaugesize. Sand away any paint from this location; usea star-type-lock washer to secure the connection.

POWER CONNECTIONConnect a wire (see chart at right for appropriategauge) directly to the vehicle’s positive batteryterminal, and install an appropriate fuse holderwithin 18" of the battery terminal. Do not install the fuse at this time. Route the wire to the amplifier’s location, and connect it to the amplifier’s positive (+12V) terminal. Be sure touse appropriate grommets whenever routingwires through the firewall or other sheet metal.Failure to adequately protect the positive wirefrom potential damage may result in a vehiclefire. When you are done routing and connectingthis wire to the battery and to the amplifier, you may install the fuse at the battery. The fuse value should be selected based on totalamplifier-current draw; see chart at right.

REMOTE CONNECTIONConnect the amplifier’s Remote (REMOTE) terminal to the source unit’s Remote Turn-Onlead using a minimum of 18-gauge wire. If yoursource unit does not have a remote turn-on connection, connect the amplifier’s (REMOTE)terminal to the vehicle’s accessory circuit.

WIRE-GAUGE CHARTAmplifier Maximum Minimum Model Current Draw Wire Gauge7520a 34A #8 AWG7540a 85A #8 AWG5760a 87A #8 AWG310a 40A #8 AWG610a 69A #6 AWG1210a 115A #4 AWGThese recommendations assume 7' – 10' wireruns. If your installation differs markedly, youwill need to adjust the wire gauge accordingly.

SPEAKER CONNECTIONSRefer to the application guides on the pages that follow. Speaker connections should bemade using a minimum of 16-gauge wire.

HIGH-LEVEL INPUT CONNECTIONSThe 7520a, 7540a and 5760a amplifiers areequipped with speaker-level inputs that allowyou to add an amplifier to head units that do not have RCA line outputs. The speaker outputsfor the source unit should be connected to theamplifier using the supplied connector (squarefour-wire plug). Remember to check for properpolarity. The 310a, 610a and 1210a amplifiers are not equipped with high-level inputs.

NOTE: When using the low-level or high-levelinputs, the AUX outputs can be used to pass afull-range line-level signal to another amplifier.

Figure 2. Speaker-level connector.

POWER CONNECTIONS

Figure 1.Terminal-connection end plate.

HIGH LEVELINPUT

Speaker Wires(spliced)

LR

–L+

–R+

+ WHITE

– WHITE/BLACK

GRAY/BLACK –

GRAY +


3

The 7520a amplifier can be set up for stereo orbridged-mono operation, as shown in Figures 5and 6.

NOTE: For simplicity, Figures 5 and 6 do not showpower, remote and input connections.

NOTE: Minimum speaker impedance for stereo operation is 2 ohms. Minimum speakerimpedance for bridged operation is 4 ohms.

APPLICATIONS – 7520a

Figure 5. 7520a amplifier set up for stereo operation.

Figure 6. 7520a amplifier set up for bridged-mono operation.


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Initially set the crossover-frequency control midway. While listening to music, adjust thecrossover for the least perceived distortion fromthe speakers, allowing them to reproduce asmuch bass as possible.

Systems using a separate subwoofer set thecrossover mode to HP (high pass) for your full-range speakers. Adjust the crossover frequency to limit bass, and provide increasedsystem volume with less distortion.

For subwoofers, choose the highest frequencythat removes vocal information from the soundof the subwoofer.

If using the 7520a or 7540a to drive a subwoofer(s),set the crossover mode to LP (low pass).

NOTE: The 310a, 610a, 1210a and the subwooferoutput of the 5760a are low-pass only and do nothave a crossover-mode switch.

SETTING THE CROSSOVER(S)Determine your system plans and set thecrossover-mode switch accordingly. If your system design does not include a subwoofer, set the crossover mode to FLAT and skip to“Setting Input Sensitivity.”

MODE SWITCHFlat: Allows a full-range signal through to thespeakers; can be used with larger full-rangespeakers such as 6" x 9"s.HP: Allows a high-pass signal through to the speakers; should be used with most loudspeakers (can protect your full-range speakers from being overdriven with low frequencies, one cause of speaker damage).LP: Allows bass to pass through to the speakers;should be selected when powering subwoofers.

Figure 13. Control end panel.

SETTING INPUT SENSITIVITY1. Initially turn the INPUT LEVEL control(s) to

minimum (counterclockwise).2. Reconnect the (–) negative lead to the vehi-

cle’s battery. Apply power to the audio systemand play a dynamic music track.

3. On the source unit, increase the volume control to 3/4 volume. Slowly increase theINPUT LEVEL control(s) toward three o’clockuntil you hear slight distortion in the music.Then reduce the INPUT LEVEL slightly untildistortion is no longer heard.

NOTE: After the source unit is on, blue LEDs (onthe top panel) will light, indicating the amplifieris on. If not, check the wiring, especially theremote connection from the source unit. Alsorefer to “Troubleshooting” on the page 7.

INSTALLATION AND SETUP

7520a

REMOTE LEVEL CONTROL (OPTIONAL)All three Reference subwoofer amplifiers and the 5760a amplifier have inputs for an optionalremote level control (100rc). This will allow thesubwoofer level to be adjusted from the listeningposition. Connect the optional remote level control using the RJ-11 jack on the side of theamplifier. Install the control module in the frontof the vehicle within easy reach of the driver.Both the underside of the dash and the centerconsole are suitable locations. Refer to themounting instructions accompanying the 100rc.

SETTING THE BASS BOOSTThe 7520a, 7540a and 5760a are all equippedwith a bass-boost control. This allows you toenhance the bass output of your system at 50Hz up to 12dB.

NOTE: Only rear channels of the 7540a are affected by the bass boost control.

AUX OUTPUTReference amplifiers (except 5760a) are equippedwith full-range outputs that can be used to connect additional amplifiers.

NOTE: When using the low- or high-level inputs,the AUX outputs can be used to pass a full-rangeline-level signal to another amplifier.


5

7

STATUS LEDsClip: Indicates the amplifier is being overdriven,and your speakers may be in danger. This should blink only on musical peaks, and not be on constantly.Power: Indicates the amplifier is on.Protection: Refer to “Troubleshooting” for specificindications.

Figure 15. LED status.

• PROBLEM:No audio (POWER LED is off).

CAUSE and SOLUTION:No voltage at BATT+ and/or REM terminals, orbad or no ground connection. Check voltagesat amplifier terminals with VOM.

• PROBLEM:No audio (PROTECT LED flashes every 4 seconds).

CAUSE and SOLUTION:DC voltage on amplifier output. Amplifier mayneed service; see enclosed warranty card forservice information.

• PROBLEM:No audio (PROTECT LED is on).

CAUSE and SOLUTION:Amplifier is overheated. Make sure amplifiercooling is not blocked at mounting location;verify that speaker-system impedance is within specified limits.

• PROBLEM:No audio (PROTECT and POWER LEDs flash).

CAUSE and SOLUTION:Voltage less than 9V on BATT+ connection.Check vehicle charging system.

• PROBLEM:No audio (PROTECT LED is on).

CAUSE and SOLUTION:Voltage greater than 16V or less than 8.5V onBATT+ connection. Check vehicle charging system.

• PROBLEM:Distorted audio.

CAUSE and SOLUTION:Input sensitivity is not set properly, or amplifieror source unit is defective. Check INPUT LEVELsetting, or check speaker wires for shorts orgrounds.

• PROBLEM:Distorted audio (PROTECT LED flashes).

CAUSE and SOLUTION:Short circuit in speaker or wire. Remove speaker leads one at a time to locate shortedspeaker or wire, then repair.

• PROBLEM:Music lacks “punch.”

CAUSE and SOLUTION:Speakers are not connected properly. Checkspeaker connections for proper polarity.

TROUBLESHOOTING


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7

71 2 3 4 5 6 8

A

B

C

D

E

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PART NO NOMENCATURE DESCRIPTION MFR PARTS Q'TY

HEA-01-178A0 HEAT SINK AL/EXTRUSION

HEA-01-182AA HEAT SINK-MAIN AL/EXTRUSION(L=290.0mm) side:P432C sandton spray,top:silver spray/1 silk screen 1

PAN-06-273AA PANEL-FRONT EGI, 1.2t P432C Painting & silk screen 1

PAN-06-274AA PANEL-REAR EGI, 1.2t P432C Painting & silk screen 1

COV-06-108AA COVER-BOTTOM EGI, 1.2t P432C Painting 1

COV-22-551AA COVER-LENS ACRYLIC,(L=290mm) SILK SCREEN,DUAL TAPE 1

FOO-21-014AA FOOT-MOUNTING ABS(XR-401),L=290mm SILVER SPRAY 2

ILL-23-503A0 ILLUMINATOR PC/MILKY 1

BKT-11-009A0 BRACKET-TR(A) SBHG, 50.0x22.5x2.0t 3

BKT-11-010A0 BRACKET-TR(B) SBHG, 50.0x25.5x2.0t 3

BKT-11-003A0 BRACKET-TR(C) SBHG, 80.0x22.5x2.0t 1

BKT-11-004A0 BRACKET-TR(D) SBHG, 80.0x25.5x2.0t 1

SUB-28-084A0 CUSHION-TR BRACKET(A) FIBER, 50.0x22.0x1.0t 3

SUB-28-007A0 CUSHION-TR BRACKET(B) FIBER, 80.0x22.0x1.0t 1

SUB-33-001A0 CUSHION-RUBBER RUBBER, 10.0x20.0x1.6t 3

SIL-34-001A0 SILICON PAD SP1000, 22.0x0.3t 250mm

SS-5 SUPPORT-PCB NYLON, L=7.9mm 4

SUB-27-003A0 SWITCH DECAL FELT, 15.0x7.0x0.3t 2

SUB-28-002A0 PAPER SPACER(A) FIBER, 200.0x6.0x0.5t COVER-BOTTOM 2

SUB-28-519A0 PAPER SPACER(B) FIBER, 200.0x8.0x0.5t TR 1

SUB-28-503A0 PAPER SPACER(C) FIBER, 200.0x10.0x0.5t FET 1

SC4-BP-20060 SCREW STT1 PH 2x6 BK FUSE HOLDER 1

SC5-NB-30050 SCREW STT2 BH 3x5 NI-P GROUND WIRE 1

SC5-BB-30060 SCREW STT2 BH 3x6 BK PANEL/S+H/S(8),SUB/P+ILLUMINATOR(2),SUB/P+H/S(2),C/B+H/S(6) 18

SC5-BB-30080 SCREW STT2 BH 3x8 BK RCA(1), TERMINAL(2) 3

SC5-NB-30150 SCREW STT2 BH 3x15 NI-P PCB + HEAT SINK 4

SC5-NP-35140 SCREW STT2 PH 3.5x16 NI-P FOOT/M+ H/SINK 6

SC1-NL-40100 SCREW SML 4x10 NI-P FOOT/M + H/SINK 8

SC1-NP-40140 SCREW SMP 4x14 NI-P BRACKET TR 8

SC4-NO-40250 SCREW STT1 OH 4x25 NI-P ACCESSORY 4

POL-31-044A0 POLY BAG(A) VINYL, 450.0x400.0x0.1t SET 1

POL-31-007A0 POLY BAG(B) VINYL, 160.0x280.0x0.03t MANUAL 1

POL-31-003A0 POLY BAG(C) VINYL, 120.0x120.0x0.03t ACCESSORY 1

INN-42-010A0 SNOW PAD EPS, 363.0x160.0x128.0 2

BOX-36-150AA BOX-GIFT SW#1(B), 440.0x368.0x133.0 1

BOX-39-161AAMAN-01-0197A

BOX-CARTON DW#2, 455.0x286.0X393.0 1/2

MANUAL ART PAPER 1

SUB-00-001A0 SILICAGEL 3g 1

SUB-00-002A0 SCOTCH TAPE WIDTH : 20mm 20cm

SUB-00-026A0 OPP TAPE WHITE 2.8m

CAR-WA-0038A WARRANTY CARD ART PAPER 1

LAB-MD-0001A STICKER WHITE/BLACK 1

LAB-QC-0001A QC STICKER GOLD/BLACK 1

LAB-CE-0004A CE STICKER BLACK/WHITE 1

LAB-00-0427A WINDOW STICKER "INFINITY" LOGO 1

LAB-SR-0065A SERIAL NO STICKER WHITE/BLACK "CODE 39" -> G/BOX, C/BOX 2

LAB-SR-0066A SERIAL NO STICKER WHITE/BLACK PANEL, H/SINK 2

LAB-00-0421A E-MARK STICKER WHITE/BLACK 1

CAR-00-0061A QUICK START GUIDE ART PAPER 1

9


10

R11010K

J154

10m/m

TER02

TM0009-01

C61

1000/35V"SHL"

HI01

LAD1140-04PBK

U106 NJM2068LD

U107 NJM2068LD

R195

1K

R1961K

R1996.8K

L01

CL-500

R198150K

R19739K

C199104(M)

R1510

C198104(M)

C19747P

R295

1K

R296

1K

R2996.8K

R298150K

R29739K

C299

104(M)C298

104(M)

C29747P

J135

6m/m

J119

6m/m

R10247KF

J141

6m/m

FH01

WF-9402P

J707.5m/m

J11111m/m

J11222m/m

J8722m/m

J8822m/m

J8922m/m

SW101

JSS2319

J136

6m/m

R22510KF

R22610KF

R2281K

R227

1K

C22622P

R229

100K

C12622P

R1281K

R1271K

R12610KF

R12510KF

U111

NJM2068LD

R213

5.6K

R22210K

R224

270K

R223

270K

R124

270K

R123

270K

C123

22/16V

C124

22/16V

C223

22/16V

C224

22/16V

J9022m/m

J8612.5m/m

J83 17.5m/m

J9315m/m

J10922m/m

J10422m/m

J330

10m/m

R4447

R270

0.1/3W

R5447

J5412.5m/m

R2568K

R921K

Q90C3198GR

R10122KF

J2812.5m/m

R10347KF

U101

NJM2068LD

C228

4.7/50V

C103

22/16V

C128

4.7/50V

R129

100K

D111SS133

J156m/m

J94

7.5m/m

RCA101

DJB-554A

C102

22/16V

J33610m/m

R10647KF

R262

680/2W D02

IN4004

C400473P

R5347

R10547KF

R2614.7/0.5W

C10522P

J186m/m

J8017.5m/m

J166m/m

J10115m/m

C10622P

C01

105(M)"TL"

VR101

20KB

R162

680/2W

J13

7.5m/m

C10410P

C31

105(M)TL

R201

22KF

C202

22/16V

C203

22/16V

R20547KF

R20347KF

J2325m/m

C801

473P

R20647KF

R20247KF

C20622P

C20522P

C20410P

R1071K

R521K

C04

2200/25V"WL"

C03104P

C171

100/16V

VR102

50KC

C201

102P

C101

102P

C255

10/16V

J1246m/m

C155

10/16V

R208

750F

R23647

TER01

TM0006-01

R108

750F

U102

NJM2068LD

J2625m/m

R6010.5KF

R15515.2KF

R25515.2KF

J115

7.5m/m

R15691KF

R25647KF

R2579.4KF

J313

7.5m/m

C15618P

C25633P

U103

NJM2068LD

U104

NJM2068LD

J181

6m/m

R11110K

C11147P

R113

5.6K

C113823(M)

J114

7.5m/m

U105 NJM2068LD

C115

823(M)

C67

47/50V

J10822m/m

R114

10K

R21010K

C21147P

R21110K

J137

10m/m

C213823(M)

R215

5.6K

C17100/16V

C215

823(M)

R212

10K

R21410K

J10

7.5m/m

J3710m/m

R151

1.5K

Q135

TIP35C

Q145

TIP36C

Q244A1023Y

D011N5404

C1312.2/50V

R12122KF

R1411K

R1205.6KF

R220

5.6KF

R1311K

J62

22m/m

J10622m/m

J69

15m/m

C08

222(M)

R30

100/2W

Q251C3200GR

C232100P

C242100P

D2511SS133

J9111m/m

C1412.2/50V

R250120

D168

1SS133

J9710m/m

C22168P

R624.7KF

R115

5.6K

Q181

C3198GR

SCREW

Q281C3198GR

R191

330/2W

Q232C3198GR

J736m/m

C16

47/25V

J85 12.5m/m

J67

17.5m/m

Q233A1266GR

Q23A1266GR

R181

56K

R25215K

D041SS133

J65

10m/m

Q33A1266GR

J11011m/m

R2373.9K

Q01A1023Y

C240473(M)

Q21C3198BL

R2472.7K

Q12A1266GR

D031SS133

R51220/0.5W

Q11A1266GR

Q02C3198GR

Q22A1268GR

D54

FR154

J8217.5m/m

R4347

J8117.5m/m

R421K

R2224K

R1310K

TH01

FTD5-350

J7917.5m/m

J125

6m/m

R2600.1/3W

R2124K

R1700.1/3W

J407.5m/m

Q43

FQP50N06

U01

TL494CN

C32

105(M)TL

C53

473P

Q54

FQP50N06

J7620m/m

J3416m/m

C63

473P

J1216m/m

J2912.5m/m

C51

1000/35V"SHL"

R3222K

Q53

FQP50N06

R11

4.7K

R014.7K

C22104P

C2202.2/50V

R3515K

R1410K

C21102(M)

R3333K

Q140

C3200GR

R234 22

J1296m/m

Q240

C3200GR

J0517.5m/m

R3415K

R123.9K

J342

15m/m

R28156K

C13

100/16V

C12

100/16V

R16750

J84 22m/m

R058.2K

R61

10K

C33

473P

J3012.5m/m

C181100/16V

SCREW

R0456K

D41

YG225D2

CLIP

2P

C1510/25V

R024.7K

R41220/0.5W

C1447/16V

R311K

J9211m/m

2NDPOWER

3P

D42

YG225D2

R244

22

Q241A1266GR

J10722m/m

R2325.6K

R27115KF

J150

12.5m/m

C11

47/16V

C60104P

R291

330/2W

J6615m/m

J7520m/m

J3212.5m/m

J3112.5m/m

J1306m/m

J64

10m/m

J7820m/m

C120

2.2/50V

Q234C1027Y

R9047K

J3310m/m

J14

15m/m

J996m/m

J10320m/m

J10215m/m

D51

FR154

D53

FR154

L03

CL-300

C161104(M) R161

4.7/0.5W

R272910F

J3412.5m/m

WIRE

W1

60m/m

D52

FR154

R2451K

J966m/m

Q235

TIP35C

R22122KF

C57

47/50V

J2525m/m

Q245

TIP36C

J4212.5m/m

C2312.2/50V

D268

1SS133

J2725m/m

C2412.2/50V

J59

22m/m

J3810m/m

J331

10m/m

L02

CL-500

J5710m/m

C271

100/16V

J3610m/m

C261

104(M)

J310

6m/m

R2411K

R2351K

R2311K

J11710m/m

J0617.5m/m

R24647

J11610m/m

J956m/m

J986m/m

J1006m/m

J5212.5m/m

C251100P

R2511.5K

Q151C3200GR

J39

7.5m/m

J0712.5m/m

Q144A1023Y

R2425.6K

J4112.5m/m

Q134C1027Y

C291

220/16V

J2225m/m

J176m/m

J746m/m

Q143C3198GR

J5512.5m/m

D191

1N4744

J5312.5m/m

R0310/0.5W

D291

1N4744

J118 15m/m

7 6

3 2

148 5

T01

37PHI

C191

220/16V

R24322

R172910F

Q142A1266GR

C140473(M)

R17115KF

R1472.7K

J10519m/m

Q141A1266GR

C12168P

R1373.9K

D1511SS133

R15215K

C142100P

C132100P

Q131C3198GR

Q132C3198GR

R9122K

Q133A1266GR

Q242A1266GR

Q231C3198GR

Q44

FQP50N06

Q243

C3198GR

R150120

R134 22

R14422

R1325.6K

R1451K

R1351K

R14647

J113

7.5m/m

R1425.6K

R14322

R13322

J68

15m/m

C151100P

VR103

20KB

R13647

R233

22

J5610m/m

J6322m/m

C62

3300/35V"SHL"

C80010/16V

R122

10K

R11210K

C192330/16V

J1317.5m/m

J132

6m/m

J1337.5m/m

J12712.5m/m

J139

7.5m/mJ1407.5m/m

J1386m/m

C200

473P

J340

15m/m

J3510m/m

J126 15m/m

J120

10m/m

J11

7.5m/m

J12820m/m

J01

7.5m/mJ027.5m/mJ037.5m/mJ047.5m/m

J1227.5m/m

R2071K

J123

7.5m/m

J0912.5m/m

J12

7.5m/m

J43

15m/m

J134

7.5m/m

R160

0.1/3W

J58

25m/m

C292330/16V

C05

2200/25V"WL"

SCREW

SCREW

SW102

JSS2219

1STPOWER

3P

C52

3300/35V"SHL"

J180

6m/m

R63

430K

J0812.5m/m

J311

6m/m

J312

6m/m

J314

6m/m

J3157.5m/m

J3167.5m/m

J3177.5m/m

J318

7.5m/m

J319

7.5m/m

J320

7.5m/m

J321

7.5m/m

J322

7.5m/m

J323

7.5m/m

J33510m/m

J7720m/m

R268

100K

J2425m/m

R168

100K

J19

17.5m/m

PAM659-01

MOSTLPF OFFHPF

RED

YELLOW

REV.0

BK

BK

BK

R-

R+

L-

L+

7520a

BASSBOOST

L LR R

L

L

L

R

R

R

V-CUTV-CUT

V-CUT V-CUT

(0.7x9):(0.7x4)

5T:12T

11

R195

J330

TER02

C61

HI01

U107U111

R199

R196

R198

L01

R197

R295

C198

R213

C299

C297

R296

R299

R298

R297

R225C298

C01

C226

J119

J141

R51

J136

J94

J111

J87

J88

J89

J90

SW101

J15

R226

R228

R227

R229

C126

R128

C400

R127

R126

R125

R222

U101

R261

R224

R223

R124

R123

R25

C124

C223 C224C228

J109

J55

J101

J104

J108

R181

R270

C32

J28

R92

R101

Q244

R103

J85

R129

U102

C103C128

C102

R106

D251

J18

RCA101

C202

J137

R105

R162

D02

C105

R201

R107

C106

J16

J67

J124

J69

C104

C31

VR101

R30

J115

C206

C113

R205

C801

C203

C255

R203

J135

R206

J26

R202

R208

C205

C204

R113

R281

C04

C201

C13

VR102

C15

C156

C155

C67

R236

R108

TER01

R60

U103

J25

R155

R255

R156

R256

R257

R111

J114

C256

C111

U104U105

J73

R114

C211

R115

C115

C200

C17

J62

R210

R211

C232

R215

J37

C213

R212

C131

C08

R214

R121

J40

J97

R03

Q145

Q235

Q251

D01

C141

R141

R120R220

R131

R250

J106

J84

J342

C240

R291

Q181

C242

C221

D04

J91

R62

D168

J65

C53

R252

R02

Q281

Q232

J112

Q233

J125

C191

J29

Q23

Q33

R237

D03

J64

Q01

J110

R247

Q21

J52

Q12

R22

Q11

D151

R41

Q02

Q22

Q140

D54

R262

R13

R21

TH01

J341

R260

R32

R170

J39Q43

U01

C21

C63

Q54

J121

C22

J129

J30

C51

R11

Q53

R01

R35

C33

C16

R14

R33

C161

R234

Q240

R34

J130

Q241

R12

R16

C140

C12

C181

R05

J107

R61

R04

C60

J150

C11

R31

D41

CLIP

C14

R161

J70

C120

R244

J92

2NDPOWER

D42

R232Q234

J59

R271

R90

J32

C271

C251

R191

J14

J31

J34

J99

J33

C220

C57

Q151

R272

J38

J102

J96

J128

J118

D51

D53

C261

R122

R245

J42

W1

D52

R221Q245

R241

C231

J27

U106

J53

C241

D268

J22

C800

J63

J331

J57

L02

J36

C291

J117

J86

J95

R235

R231

R246

J116

J19

R251

J56

J98

J100

J17

C121

R242

Q144

J113

J41

Q134

R243

J103

Q143

J66

J58

J74

J132

Q142

J54

D191

J127

R112

D291

J68

T01

Q90

R172

R171

Q141

R15

R147

R137

J105

Q131

C142

R152

R151

R91

C132

C151

Q132

Q133

R150

Q242

Q231

Q243

Q44

C123

R134

R144

R132

R145

R135

R146

R142

J131

R143

R133

R136

J340

C101

VR103

R233

R63

J35

Q135

C62

C197

J93

J154

C192

J133

J138

J139

J140

C199

J126

J120

J43

J122

J123

R207

J134

D11

J315

R160

J24

C292

C05

SW102

1STPOWER

C52

R268

J83

C03

R110

J316

J317

C215

J23

R168

R102

C171

V-CUTV-CUT

V-CUT V-CUT

12

13

PART NO NOMENCATURE DESCRIPTION MFR PARTS REF NO Q'TY

TRS-00-00087 TRANSISTOR SMALL SIGNAL PNP KTA1023Y Q01,144,244 3

TRS-00-00088 TRANSISTOR SMALL SIGNAL NPN KTC1027Y Q134,234 2

TRS-00-00091 TRANSISTOR SMALL SIGNAL PNP KTA1268GR Q22 1

TRS-00-00111 TRANSISTOR SMALL SIGNAL NPN KTC3200GR Q151,251 2

TRS-00-00090 TRANSISTOR SMALL SIGNAL PNP KTA1266GR Q11,12,23,33,133,141,142,233,241,242 10

TRS-00-00110 TRANSISTOR SMALL SIGNAL NPN KTC3198GR Q02,90,131,132,143,181,231,232,243,281 10

TRS-00-00109 TRANSISTOR SMALL SIGNAL NPN KTC3198BL Q21 1

DIO-00-00108 DIODE FAST RECOVERY FR154 D51,52,53,54 4

DIO-00-00003 DIODE RECTIFIER IN4004 D02 1

DIO-00-00006 DIODE SWITCHING SIGNAL 1SS133 /1N4148 D03,04,11,151,168,251,268 7

RES-00-00577 RESISTOR METAL FILM 1/5WF 750 OHM R108,208 2

RES-00-00590 RESISTOR METAL FILM 1/5WF 910 OHM R172,272 2

RES-00-00523 RESISTOR METAL FILM 1/5WF 4.7K OHM R62 1

RES-00-00545 RESISTOR METAL FILM 1/5WF 5.6K OHM R120,220 2


RES-00-00402 RESISTOR METAL FILM 1/5WF 10K OHM R125,126,225,226 4


RES-00-00425 RESISTOR METAL FILM 1/5WF 15K OHM R171,271 2

RES-00-00421 RESISTOR METAL FILM 1/5WF 15.2K OHM R155,255 2

RES-00-00467 RESISTOR METAL FILM 1/5WF 22K OHM R101,121,201,221 4

RES-00-00537 RESISTOR METAL FILM 1/5WF 47K OHM R102,103,105,106,202,203,205,206,256 9

RES-00-00591 RESISTOR METAL FILM 1/5WF 91K OHM R156 1

RES-00-00610 RESISTOR CARBON FILM 1/5WJ 10 OHM R15 1

RES-00-00660 RESISTOR CARBON FILM 1/5WJ 22 OHM R133,134,143,144,233,234,243,244 8

RES-00-00716 RESISTOR CARBON FILM 1/5WJ 47 OHM R43,44,53,54,136,146,236,246 8

RES-00-00615 RESISTOR CARBON FILM 1/5WJ 120 OHM R150,250 2

RES-00-00747 RESISTOR CARBON FILM 1/5WJ 750 OHM R16 1

RES-00-00633 RESISTOR CARBON FILM 1/5WJ 1K OHM R31,42,52,92,107,127,128,131,135,141 22

R145,195,196,207,227,228,231,235,241,245

R295,296

RES-00-00598 RESISTOR CARBON FILM 1/5WJ 1.5K OHM R151,251 2


RES-00-00676 RESISTOR CARBON FILM 1/5WJ 3.9K OHM R12,137,237 3

RES-00-00702 RESISTOR CARBON FILM 1/5WJ 4.7K OHM R01,02,11 3

RES-00-00720 RESISTOR CARBON FILM 1/5WJ 5.6K OHM R113,115,132,142,213,215,232,242 8


RES-00-00751 RESISTOR CARBON FILM 1/5WJ 8.2K OHM R05 1

RES-00-00608 RESISTOR CARBON FILM 1/5WJ 10K OHM R13,14,61,110,111,112,114,122,210,211 13

R212,214,222

RES-00-00623 RESISTOR CARBON FILM 1/5WJ 15K OHM R34,35,152,252 4

RES-00-00658 RESISTOR CARBON FILM 1/5WJ 22K OHM R32,91 2


RES-00-00687 RESISTOR CARBON FILM 1/5WJ 33K OHM R33 1



RES-00-00730 RESISTOR CARBON FILM 1/5WJ 56K OHM R04,181,281 3






RES-00-00053 RESISTOR METAL FILM 1/2WJ 4.7 OHM R161,261 2

RES-00-00018 RESISTOR METAL FILM 1/2WJ 10 OHM R03 1

RES-00-00038 RESISTOR METAL FILM 1/2WJ 220 OHM R41,51 2

ELC-00-00223 CAPACITOR ELECTROLYTIC "SMS" 2.2/50V C120,131,141,220,231,241 6

ELC-00-00229 CAPACITOR ELECTROLYTIC "SMS" 4.7/50V C128,228 2

ELC-00-00195 CAPACITOR ELECTROLYTIC "SMS" 10/16V C155,255,800 3

ELC-00-00203 CAPACITOR ELECTROLYTIC "SMS" 10/25V C15 1

ELC-00-00197 CAPACITOR ELECTROLYTIC "SMS" 22/16V C102,103,123,124,202,203,223,224 8

14


ELC-00-00198 CAPACITOR ELECTROLYTIC "SMS" 47/16V C11,14 2

ELC-00-00205 CAPACITOR ELECTROLYTIC "SMS" 47/25V C16 1


ELC-00-00199 CAPACITOR ELECTROLYTIC "SMS" 100/16V C12,13,17,171,181,271 6



MYC-00-00020 CAPACITOR MYLAR 5% 100V 102(M) J C21 1

MYC-00-00031 CAPACITOR MYLAR 5% 100V 222(M) J C08 1

MYC-00-00038 CAPACITOR MYLAR 5% 100V 473(M) J C140,240 2

MYC-00-00045 CAPACITOR MYLAR 5% 100V 823(M) J C113,115,213,215 4

MYC-00-00094 CAPACITOR MYLAR 5% 100V 104(M) J C161,198,199,261,298,299 6

MYC-00-00085 CAPACITOR MYLAR 5% 63V "TL" 105(M) J C01,31,32 3

CEC-00-00077 CAPACITOR CERAMIC DISK 50V "NPO" 10P F C104,204 2

CEC-00-00084 CAPACITOR CERAMIC DISK 50V "NPO" 18P F C156 1

CEC-00-00090 CAPACITOR CERAMIC DISK 50V "NPO" 22P F C105,106,126,205,206,226 6

CEC-00-00097 CAPACITOR CERAMIC DISK 50V "NPO" 33P F C256 1

CEC-00-00103 CAPACITOR CERAMIC DISK 50V "NPO" 47P F C111,197,211,297 4

CEC-00-00108 CAPACITOR CERAMIC DISK 50V "NPO" 68P F C121,221 2

CEC-00-00073 CAPACITOR CERAMIC DISK 50V "NPO" 100P F C132,142,151,232,242,251 6

CEC-00-00074 CAPACITOR CERAMIC DISK 50V 102P F C101,201 2

CEC-00-00102 CAPACITOR CERAMIC DISK 50V 473P F C33,53,63,200,400,801 6

CEC-00-00076 CAPACITOR CERAMIC DISK 50V 104P F C03,22,60 3

JUP-00-00043 JUMPER 0OHM JUMPER 6m/m J15,16,17,18,73,74,95,96,98,99 29

J100,119,121,124,125,129,130,132,135,136

J138,141,180,181,310,311,312,314,341

JUP-00-00044 JUMPER 0OHM JUMPER 7.5m/m J01,02,03,04,10,11,12,13,39,40 32

J70,94,113,114,115,122,123,131,133,134

J139,140,313,315,316,317,318,319,320,321

J322,323


J116,117,120,137,154,330,331,335,336

JUP-00-00052 JUMPER 0OHM JUMPER 11m/m J91,92,110,111 4

JUP-00-00046 JUMPER 0OHM JUMPER 12.5m/m J07,08,09,28,29,30,31,32,34,41 19

J42,52,53,54,55,85,86,127,150


J340,342

JUP-00-00048 JUMPER 0OHM JUMPER 17.5m/m J05,06,19,67,79,80,81,82,83 9

JUP-00-00074 JUMPER 0OHM JUMPER 19m/m J105 1

JUP-00-00049 JUMPER 0OHM JUMPER 20m/m J75,76,77,78,103,128 6


J107,108,109,112

JUP-00-00042 JUMPER 0OHM JUMPER 25m/m J22,23,24,25,26,27,58 7

ICO-00-00022 I.C P.W.M TL494CN U01 1

ICO-00-00112 I.C DUAL OPAMP (SIP-08P) NJM2068LD U101,102,103,104,105,106,107,111 8

FET-00-00023 F.E.T N-CH MOSFET FQP50N06 Q43,44,53,54 4

TRS-00-00188 TRANSISTOR AUDIO POWER NPN TIP35C Q135,235 2

TRS-00-00207 TRANSISTOR AUDIO POWER PNP TIP36C Q145,245 2

TRS-00-00111 TRANSISTOR SMALL SIGNAL NPN KTC3200GR Q140,240 2

DIO-00-00152 DIODE FAST RECOVERY YG225D2 D41,42 2

DIO-00-00048 DIODE RECTIFIER 1N5404 D01 1

DIO-00-00206 DIODE ZENER 1W 15V 1N4744A D191,291 2

RES-00-01046 RESISTOR MOR/S 2WJ 100 OHM (3.8x11m/m) R30 1

RES-00-01269 RESISTOR MOR/S 2WJ 330 OHM (3.8x11m/m) R191,291 2

RES-00-01041 RESISTOR MOR/S 2WJ 680 OHM (3.8x11m/m) R162,262 2

RES-00-00895 RESISTOR WIRE WOUND 3WJ 0.1 OHM (5.5x15m/m) R160,170,260,270 4

15


THS-00-00013 THERMISTOR 50K NTC RESISTOR FTD5-350 TH01 1

ELC-00-00183 CAPACITOR ELECTROLYTIC "SHL" 1000/35V (12.5x20m/m) C51,61 2

ELC-00-00603 CAPACITOR ELECTROLYTIC "SHL" 3300/35V (18x25m/m) C52,62 2

ELC-00-00727 CAPACITOR ELECTROLYTIC "WL" 2200/25V (16x25m/m) C04,05 2

SWI-00-00033 SWITCH SLIDE SWITCH JSS2319 SW101 1

SWI-00-00024 SWITCH SLIDE SWITCH JSS2219 SW102 1

VOL-00-00335 VOLUME V12L5(9x5)G(PH2D)N15S 3B20KB x 2 VR101,103 2

VOL-00-00334 VOLUME V12L5(9x5)G(4R)(PH2D)N15S 15C50KC x 4 VR102 1

COR-TF-00404 CORE 5(0.7X9):12(0.7X4) 37PHI ISU T01 1

COI-00-00023 INDUCTOR BAR COIL CL-300 L03 1

COI-00-00034 INDUCTOR DRUM COIL CL-500 L01,02 2

TER-00-00030 TERMINAL GOLD PLATED TM0006-01 (3P) TER01 1

TER-00-00034 TERMINAL GOLD PLATED TM0009-01 (4P) TER02 1

JAC-00-00043 RCA JACK GOLD PLATED DJB-554A RCA101 1

CON-00-00002 WAFER LWL0640-2P CLIP 1

CON-00-00033 WAFER LWL0640-3P 1ST POWER,2ND POWER 2

CON-00-00128 WAFER LAD1140-04PBK HI01 1

WIR-00-00208 WIRE ASS'Y 300m/m CHD1140-04PBK ACCESSORY 1

HOD-00-00009 FUSE HOLDER WF-9402 FH01 1

WIR-00-00017 WIRE AWG #22 BLACK 3.2PHI RING RUG100m/m W1 1

TUB-00-00008 TEFLON TUBE 0.7PHI 10m/m Q140,240,TH01 4

FUS-AT-00006 AUTO FUSE 30A SET1+ ASS'Y 1 2

ICO-00-00095 I.C COMPARATOR DIP-8P KIA393P U90 1






RES-00-00635 RESISTOR CARBON FILM 1/5WJ 1M OHM R98 1

RES-00-00029 RESISTOR METAL FILM 1/2WJ 1K OHM R192,292 2

CEC-00-00005 CAPACITOR CERAMIC TUBULAR 50V 103P C91,92,93 3

CEC-00-00006 CAPACITOR CERAMIC TUBULAR 50V 104P C90 1

DIO-00-00321 LED BLUE 3PHI MS-L330CBHSK LED1,2,3 3

CON-00-00139 WAFER LAL0640-2P CLIP 1

CON-00-00140 WAFER LAL0640-3P 1ST POWER,2ND POWER 2

WIR-AS-00220 WIRE ASS'Y BK,RED CHL0640-2P(300m/m) CLIP 1

WIR-AS-00218 WIRE ASS'Y BK,RED,GREEN CHL0640-3P(300m/m) 1ST POWER 1

16

17

18

71 2 3 4 5 6 8

A

B

C

D

E

C800

10/16V

R54

47

R44

47

R01

4.7K

Q01

A1023Y

R02

4.7K

Q02

C3198GR

R05

8.2K

R04

56K

C03

104P

R35

15K

C01

105M

C61

1000/35V

C51

1000/35V

D02

N4004

R61

10K

TH01

50KTH

C67

47/50V

C57

47/50V

D54

FR154

D53

FR154

D51

FR154

C63

473P

D52

FR154

R11

4.7K

R12

3.9K

C11

47/16V

Q11

A1266GR

Q12

A1266GR

R25

68K

R13

10K

R14

10K C12

100/16V

D11

1SS133

R16

750

R31

1K

R32

22K

C15

10/25V

R33

33K

Q22

A1268GR

R34

15K

C16

47/25V

PROT

C33

473P

U01

TL494CN

R21

24K

C21

102(M)

R22

24K C13

100/16V

C14

47/16V

R03

10/0.5W

R41

220/0.5W

Q23

A1266GR

C04

2200/25V"WL"

D04

1SS133

R60

10.5KF

R42

1K

R43

47

R53

47

R52

1K

D03

1SS133

Q33

A1266GRR51

220/0.5W

D01

1N5404

L03

CL-300FH01

30A

T01

5T:12T

Q54

FQP50N06

Q43

FQP50N06

Q21

C3198BL

D41

YG225D2

D42

YG225D2

C52

3300/35V

C62

3300/35V

C22

104P

R15

10

C08

222(M)

R30

100/2W

C32

105(M)TL

W1

C31

105(M)TL

C53

473P

Q53

FQP50N06

L01

CL-500

L02

CL-500

C60

104P

R62

4.7KF

VEE

VCC

VEE2

VCC2

33.76V

33.81V0V

0V

5.09V

Q44

FQP50N06

0V

6.17V

5.09V

PRT-LED

5.09V

13.57V

5.09V

4.44V

0.68V

12.93V

13.57V 13.66V14.4V

R63

430K

C05

2200/25V"WL"

R90

47K

R91

22K

C801

473P

R92

1K

Q90

C3198GR

C17

100/16V

-33.7V

-33.7V

33.7V

33.7V

B+SW

(0.7x9):(0.7x4)

CASE GND

16 15 14 13 12 11 10 9

87654321

12VB+

REM

19

71 2 3 4 5 6 8

A

B

C

D

E

HI-INPUT

HI01

LAD1140-04PBK

R105

47KF

C128

4.7/50V

R241

1K

C241

2.2/50V

R231

1K

C231

2.2/50V

R142

5.6K

R141

1K

C141

2.2/50V

R132

5.6K

RCA101-A

DJB-554A

R122

10K

C211

47P

U111-A

1

3

2

NJM2068LD

+

-

VR101-A

20KB

R110

10K

U102-B

NJM2068LD

13

2

4

R222

10K

U102-A8

5

67

NJM2068LD

U105-B

1

2

3

NJM2068LD

-

+

R115

5.6K

PROT

C228

4.7/50V

U103-B

1

2

3

NJM2088LD

-

+

R256 47KF

C132

100P

R257

9.4KF

R255

15.2KF

R126

10KF

C256

33P

C155

10/16V

U104-B

1

2

3

NJM2068LD

-

+

VR101-B

20KB

R108

750

R123

270K

C113

823M

R21410K

VEE2

R2135.6K

R156 91KF

C15618P

R155

15.2KF

R206

47KF

C255

10/16V

C215

823M

R205

47KF

R131

1K

C131

2.2/50V

C102

22/16V

U111-B

7

5

6

NJM2068LD

+

-

R225

10KF

R228

1KDJB-554D

DJB-554A

VEE

R229

100K

RCA101-B

DJB-554A

C101

102P

R127

1K

U101-B

7

6

5

NJM2068LD

-

+

R129

100K

RCA101-C

DJB-554A

R203

47KF

C204

10P

R201

22KF

R202

47KF

C203

22/16V

C202

22/16V

C181

100/16V

R281

56K

R227

1K

C120

2.2\50V

R112

10K

R208

750C201

102P

C123

22/16V

C124

22/16V

R207

1K

R21110K

R128

1K

R270

0.1/3W

VEE

VCC

VCC

C232

100P

P2

4P

C224

22/16V

R120

5.6KF

VR102A

50KC

C223

22/16V

C121

68P

C220

2.2\50V

R107

1K

R106

47KF

R226

10KF

C221

68P

R124

270K

R221

22KF

VR102C

50KC

R121

22KF

R220

5.6KF

R247

2.7K

R224

270K

U101-A

1

2

3

NJM2068LD

-

+

R11110K

VR102D

50KC

C115

823M

R113

5.6K

R114

10K

R245

1K

R243

22

R244

22

R233

22

SW101-A

JSS-2319

C111

47P

VR102B

50KC

SW101-B

JSS-2319

R212

10K

C213

823M

VCC2

R242

5.6K

Q281

C3198GR

U104-A

7

5

6

NJM2068LD

-

+

Q181

C3198GRR181

56K

Q151

C3200GR

C151

100PD151

1SS133

R152

15K

C161

104(M)

R161

4.7/0.5W

R151

1.5K

R171

15KF

C171

100/16V

R172

910F

C291

220/16V

D291

1N4744(15V)

R291

330/2W

R160

0.1/3W

Q135

TIP35C

Q145

TIP36C

Q144

A1023Y

Q134

C1027Y

R150

120

R136

47

R146

47

Q143

C3198GR

R137

3.9K

Q140

C3200GR

Q133

A1266GR

D191

1N4744(15V)C191

220/16V

R191

330/2W

R135

1K

R134

22

R133

22

R144

22

R143

22

R145

1K

U103-A

7

5

6

NJM2068LD

-

+

R215

5.6K

U105-A

7

5

6

NJM2068LD

-

+

R210

10K

R125

10KF

R147

2.7K

R223

270K

Q141

A1266GR

Q142

A1266GR

Q132

C3198GR

Q131

C3198GR

R262

680/2W

R162

680/2W

C242

100P

C142

100P

R234

22

R235

1K

Q231

C3198GR

Q232

C3198GR

Q242

A1266GR

Q241

A1266GR

Q233

A1266GR

Q240

C3200GR

R237

3.9K

Q243

C3198GR

R246

47

R236

47

R250

120

Q234

C1027Y

Q244

A1023Y

Q245

TIP36C

Q235

TIP35C

C206

22P

C271

100/16V

R272

910F

R271

15KF

R251

1.5K

R261

4.7/0.5W

C261

104(M)

R252

15K

R232

5.6K

D251

1SS133C251

100P

Q251

C3200GR

C240

473(M)

C140

473(M)

C400

473P

C200

473P

R103

47KF

C104

10P

R101

22KF

R102

47KF

C103

22/16V

-33.8V

-0.9V

-0.3V

0V

0.2V

0.8V

32.8V

-0.3V

-0.9V

-32.8V

C205

22P

C106

22P

C105

22P

C126

22P

C226

22P

0.58V

-0.63V

0V

0.2V

0.8V

32.8V

D269

1SS133

D169

1SS133

R269

100K

R169

100K

R260

0.1/3W

R170

0.1/3W

C292

330/16V

C192

330/16V

SW102

JSS2219

CLIP

CLIP

C199

104(M)

U106-A

1

3

2

NJM2068LD

+

-

R195

1K

R196

1K

R198

150K

R197

39K

R199

6.8KU106-B

7

5

6

NJM2068LD

+

-

C198

104(M)

C197

47P

VR103-A

20KB

VR103-B

20KB

C297

47P

C298

104(M)

U107-B

7

5

6

NJM2068LD

+

-

R299

6.8K

R297

39K

R298

150K

R296

1K

R295

1K

U107-A

1

3

2

NJM2068LD

+

-

C299

104(M)

-33.7V

33.7V

-15V

+15V

-33.8V

-33.8V

-15V

33.73V

33.7V

+15V 33.7V

#8PIN : +15V

#4PIN : -15V

NJM2068LD

L-OUT

LOW INPUT L-CH

LOW INPUT R-CH

R-OUT

-15V

FLAT

FLAT

HPF

HPF

LPF

LPF

A

F/LOUT

F/ROUT

MONO

STEREO

+

-

-

+

32-320Hz VARIABLE X-OVER

20

71 2 3 4 5 6 8

A

B

C

D

E

21

Documents

Reference Series 7520a · 2019-04-07 · 2 • If the amplifier’s fuse must be replaced, use only the same type and rating as that of the original. Do not substitute another kind