Samsung SGH-C450 service manual - narod.ru · PDF fileSamsung Electronics Co.,Ltd. 2007. 08 Rev.1.0 This Service Manual is a property of Samsung Electronics Co.,Ltd. ⓒ Any unauthorized

GSM TELEPHONESGH-C450

GSM TELEPHONE CONTENTS

1. Safety Precautions

2. Specification

3. Product Function

4. Array course control

5. Exploded View and Parts List

6. MAIN Electrical Parts List

7. Block Diagrams

8. PCB Diagrams

9. Flow Chart of Troubleshooting

10. Reference data

11. Disassembly and AssemblyInstructions

Samsung Electronics Co.,Ltd.

2007. 08 Rev.1.0

ⓒThis Service Manual is a property of Samsung Electronics Co.,Ltd.Any unauthorized use of Manual can be punished under applicableInternational and/or domestic law.

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GSPN (Global Service Partner Network)

SAMSUNG Proprietary-Contents may change without notice

1. Safety Precautions

1-1

This Document can not be used without Samsung's authorization

1-1. Repair Precaution

● Repair in Shield Box, during detailed tuning.Take specially care of tuning or test, because the specification of cellular phone is sensitive forsurrounding interference(RF noise).

● Be careful to use a kind of magnetic object or tool, because performance of parts is damaged by theinfluence of magnetic force.

● Surely use a standard screwdriver when you disassemble this product, otherwise screw will be wornaway.

● Use a thicken twisted wire when you measure level.A thicken twisted wire has low resistance, therefore error of measurement is few.

● Repair after separate Test Pack and Set because for short danger (for example anovercurrent and furious flames of parts etc) when you repair board in condition ofconnecting Test Pack and tuning on.

● Take specially care of soldering, because Land of PCB is small and weak in heat.

● Surely tune on/off while using AC power plug, because a repair of battery charger isdangerous when tuning ON/OFF PBA and Connector after disassembling charger

● Don't use as you pleases after change other material than replacement registered on SEC System.Otherwise engineer in charge isn't charged with problem that you don't keep this rules.


Safety Precautions

1-2


1-2. ESD(Electrostatically Sensitive Devices) Precaution

Several semiconductor may be damaged easily by static electricity. Such parts are called by ESD(Electrostatically Sensitive Devices), for example IC,BGA chip etc. Read Precaution below.You can prevent from ESD damage by static electricity.

● Remove static electricity remained your body before you touch semiconductor or parts withsemiconductor. There are ways that you touch an earthed place or wear static electricityprevention string on wrist.

● Use earthed soldering steel when you connect or disconnect ESD.

● Use soldering removing tool to break static electricity. , otherwise ESD will be damaged bystatic electricity.

● Don't unpack until you set up ESD on product. Because most of ESD are packed by box andaluminumplate to have conductive power,they are prevented from static electricity.

● You must maintain electric contact between ESD and place due to be set up until ESD is connectedcompletely to the proper place or a circuit board.


2. Specification


2-1

EGSM 900 DCS1800

Freq. Band[MHz]Upl ink/Downl ink

880~915925~960

1710~17851805~1880

ARFCN range 0~124 & 975~1023 512~885

Tx/Rx spacing 45MHz 95MHz

Mod. Bit rate/Bi t Per iod

270.833kbps3.692us

270.833kbps3.692us

Time Slot Per iod/FramePeriod

576.9us4.615ms

576.9us4.615ms

Modulat ion 0.3GMSK 0.3GMSK

MS Power 33dBm~5dBm 30dBm~0dBm

Power Class 4(max +33dBm)

1(max +30dBm)

Sensit iv i ty -102dBm -100dBm

TDMA Mux 8 8

Cel l Radius 35Km 2Km

2-1. GSM General Specification

SAMSUNG Proprietary-Contents may change without noticeThis Document can not be used without Samsung's authorization

Specification

2-2

TX Powercontrol level

GSM900

5 33±2 dBm

6 31±2 dBm

7 29±2 dBm

8 27±2 dBm

9 25±2 dBm

10 23±2 dBm

11 21±2 dBm

12 19±2 dBm

13 17±2 dBm

14 15±2 dBm

15 13±2 dBm

16 11±3 dBm

17 9±3dBm

18 7±3 dBm

19 5±3 dBm

TX Powercontrol level

DCS1800

0 30±3 dBm

1 28±3 dBm

2 26±3 dBm

3 24±3 dBm

4 22±3 dBm

5 20±3 dBm

6 18±3 dBm

7 16±3 dBm

8 14±3 dBm

9 12±4 dBm

10 10±4 dBm

11 8±4dBm

12 6±4 dBm

13 4±4 dBm

14 2±5 dBm

15 0±5 dBm

2-2. GSM TX power class


3. Operation Instruction and Installation

3-1


Main Function

� S20 Pin TA� No Java� No MMS� FM radio� WAP 2.0� 10 Poly S/W MIDI� Dual band(900/1800MHz)� GPRS Class 10� VGA camera


Operation Instruction and Installation

3-2



4. Array course control

4-1


4-1. Software Adjustments

1. JIG Box: Download, Trace, Calibration, etc2. RF test cable: RF test3. Test cable: JIG to phone4. Serial cable: PC to JIG5. TA (Travel Adaptor)


Array course control

4-2


4-2. Software Downloading4-2-1. Downloading Binary Files• 2 binary files for downloading C450.– C450XAGD3 .cla– C450XAGD3.tfs

4-2-2. Pre-requsite for Downloading• Downloader Program(C450 Downloader 2.0NEW)• SGH-C450 Mobile Phone• JIG BOX

• Test Cable• Serial Cable• Binary files



4-3


4-2-3. S/W Downloader Program

1. Load the binary download program by executing the “C450 Downloader 2.0NEW”.

2. Select the Port, Baud Rate and Mode.



4-4


3. Select the binary files what you want to download



4-5


4. Press the "Start" button and connect the Handset

5. When downloading is complete, automatically the small window was showed up..



4-6



5. Exploded View and Parts List

5-1


5-1. Cellular phone Exploded View

QMW02

QKP01

QLC01

QMP01

QSP01

QAN02

QMO01

QRE01

QRF01

QCR68

QFR01

QME01

QCR17QSH01

QCA01

QBA01

QBA00

QMI01

QSP05

QRF03

QMI03


Exploded View and Parts List

5-2


Design LOC Description SEC CODE

QAN02 INTENNA-SGHC420 GH42-01240A

QBA00 PMO COVER-BATTERY GH72-41901B

QBA01 INNER BATTERY PACK-750MAH,BLK, GH43-02483A

QCA01 CAMERA MODULE GH59-04223A

QCR17 SCREW-MACHINE 6001-001460

QCR68 SCREW-TAPPING 6002-001399

QKP01 ASSY KEYPAD-(EU/BLK) V3 GH98-06072B

QLC01 LCD-LCD MODULE GH07-01056A

QME01 DOME SHEET-DOME SHEET 22KEY(MA GH59-04572A

QMO01 MOTOR DC GH31-00296A

QMP01 PBA MAIN-SGHC450 GH92-03544A

QMW02 PCT COVER-WINDOW MAIN GH72-41907B

QRE01 ASSY CASE-REAR GH98-05044B

QRF01 TAPE-SHEET RF GH74-32599B

QSH01 ASSY BRACKET-SHIELD CAN GH98-05378A

QSP01 SPEAKER 3001-002100

QMI01 MICROPHONE-ASSY-SGHC420 GH30-00390A

QMI03 AS-SCHS299 MIC RUBBER HOLDER GH81-06644A

QFR01 ASSY CASE-FRONT GH98-05043B

QRF03 PMO COVER-EAR V2 GH72-42135B

QSP05 ASSY DECO-SPK GRILL GH98-04853A

5-2. Cellular phone Parts List



5-3


Description SEC CODEBAG PE 6902-000634

ADAPTOR-ATADS10EBE,BLK,EU GH44-01702A

EARPHONE-AAEP405MBE,S20,BLK,EU GH59-04874A

LABEL(P)-UNIT SEAL GH68-00518B

LABEL(P)-IMEI GH68-01335D

LABEL(R)-WATER SOAK GH68-09361A

LABEL(R)-MAIN(EU) GH68-15206A

MANUAL USERS-EU ROMANIAN GH68-15253A

BOX-UNIT(EU) GH69-05570B

TAPE INSU GH74-13822A

TAPE INSU GH74-28075A

MPR-VINYL BOHO WINDOW GH74-31711A

VINYL-BOHO WINDOW MAIN TOP GH74-32641A



5-4



6. MAIN Electrical Parts List

6-1


Design LOC Description SEC Code STATUSBAT600 HEADER-BATTERY 3711-006228 SA

C100 C-CER,CHIP 2203-000854 SAC101 INDUCTOR-SMD 2703-001726 SAC103 C-CER,CHIP 2203-005050 SAC104 C-CER,CHIP 2203-006048 SAC105 C-CER,CHIP 2203-006361 SAC106 C-CER,CHIP 2203-000812 SAC107 C-CER,CHIP 2203-000812 SAC108 C-CER,CHIP 2203-000812 SAC109 C-CER,CHIP 2203-000489 SAC110 C-CER,CHIP 2203-005482 SAC112 C-CER,CHIP 2203-005482 SAC113 C-CER,CHIP 2203-005234 SAC115 C-CER,CHIP 2203-005234 SAC116 C-CER,CHIP 2203-005288 SAC118 C-CER,CHIP 2203-000254 SAC119 C-CER,CHIP 2203-005288 SAC120 C-CER,CHIP 2203-005482 SAC121 C-CER,CHIP 2203-000278 SAC122 C-CER,CHIP 2203-005050 SAC123 C-CER,CHIP 2203-000278 SAC124 C-CER,CHIP 2203-000679 SAC202 C-CER,CHIP 2203-002709 SAC203 C-CER,CHIP 2203-002709 SAC204 C-CER,CHIP 2203-002709 SAC205 C-CER,CHIP 2203-002709 SAC206 C-CER,CHIP 2203-000254 SAC207 C-CER,CHIP 2203-002709 SAC208 C-CER,CHIP 2203-002709 SAC209 C-CER,CHIP 2203-000254 SAC210 C-CER,CHIP 2203-000254 SAC211 C-CER,CHIP 2203-005482 SAC212 C-CER,CHIP 2203-005482 SAC213 C-CER,CHIP 2203-000854 SAC214 C-CER,CHIP 2203-000679 SAC216 C-CER,CHIP 2203-005482 SAC217 C-CER,CHIP 2203-005481 SAC218 C-CER,CHIP 2203-005481 SAC219 C-CER,CHIP 2203-005482 SAC220 C-CER,CHIP 2203-002709 SAC221 C-CER,CHIP 2203-002709 SAC300 C-CER,CHIP 2203-000278 SAC301 C-CER,CHIP 2203-000330 SAC302 C-CER,CHIP 2203-000812 SAC303 C-CER,CHIP 2203-006824 SAC304 C-CER,CHIP 2203-006824 SAC305 C-CER,CHIP 2203-006257 SAC306 C-CER,CHIP 2203-006257 SAC307 C-CER,CHIP 2203-006257 SAC308 C-CER,CHIP 2203-006257 SAC309 C-CER,CHIP 2203-006257 SAC310 C-CER,CHIP 2203-005482 SAC311 C-CER,CHIP 2203-006257 SA


Main Electrical Parts List

6-2


Design LOC Description SEC Code STATUSC312 C-CER,CHIP 2203-006348 SAC313 C-CER,CHIP 2203-006681 SAC314 C-CER,CHIP 2203-006348 SAC316 C-CER,CHIP 2203-006562 SAC317 C-CER,CHIP 2203-006825 SAC318 C-CER,CHIP 2203-005482 SAC327 C-CER,CHIP 2203-002709 SAC328 C-CER,CHIP 2203-005482 SAC329 C-CER,CHIP 2203-000812 SAC330 C-CER,CHIP 2203-006824 SAC400 C-CER,CHIP 2203-000679 SAC401 C-CER,CHIP 2203-002709 SAC402 C-CER,CHIP 2203-000425 SAC404 C-CER,CHIP 2203-000812 SAC405 C-CER,CHIP 2203-002709 SAC406 C-CER,CHIP 2203-000679 SAC407 C-CER,CHIP 2203-005482 SAC408 C-CER,CHIP 2203-005482 SAC410 C-CER,CHIP 2203-006048 SAC413 C-CER,CHIP 2203-001153 SAC415 C-CER,CHIP 2203-000233 SAC416 C-CER,CHIP 2203-005481 SAC417 C-CER,CHIP 2203-005481 SAC418 C-CER,CHIP 2203-005482 SAC419 C-CER,CHIP 2203-006137 SAC420 C-CER,CHIP 2203-006137 SAC421 C-CER,CHIP 2203-006324 SAC422 C-CER,CHIP 2203-006562 SAC423 C-CER,CHIP 2203-006562 SAC424 C-CER,CHIP 2203-006562 SAC425 C-CER,CHIP 2203-000995 SAC426 C-CER,CHIP 2203-000995 SAC427 C-CER,CHIP 2203-006824 SAC428 C-CER,CHIP 2203-006824 SAC429 C-CER,CHIP 2203-006562 SAC430 C-CER,CHIP 2203-006562 SAC501 C-CER,CHIP 2203-000425 SAC503 C-CER,CHIP 2203-000233 SAC504 C-CER,CHIP 2203-006824 SAC506 C-CER,CHIP 2203-001153 SAC507 C-CER,CHIP 2203-001153 SAC508 C-CER,CHIP 2203-001153 SAC509 C-CER,CHIP 2203-000233 SAC510 C-CER,CHIP 2203-005482 SAC511 C-CER,CHIP 2203-005482 SAC512 C-CER,CHIP 2203-005482 SAC513 C-CER,CHIP 2203-006562 SAC514 C-CER,CHIP 2203-006562 SAC515 C-CER,CHIP 2203-005482 SAC600 C-CER,CHIP 2203-000311 SAC601 C-NETWORK 2503-001053 SAC602 C-NETWORK 2503-001053 SAC603 C-NETWORK 2503-001053 SA



6-3


Design LOC Description SEC Code STATUSC604 C-NETWORK 2503-001053 SAC605 C-CER,CHIP 2203-006562 SAC606 C-CER,CHIP 2203-006562 SAC607 C-CER,CHIP 2203-000386 SAC608 C-CER,CHIP 2203-002709 SAC609 C-CER,CHIP 2203-000386 SAC610 C-CER,CHIP 2203-002709 SAC611 C-CER,CHIP 2203-002709 SAC612 C-CER,CHIP 2203-000386 SAC613 C-CER,CHIP 2203-000386 SAC614 C-CER,CHIP 2203-002709 SAC615 C-CER,CHIP 2203-006562 SAC616 C-NETWORK 2503-001053 SAC617 C-NETWORK 2503-001053 SAC618 C-CER,CHIP 2203-000995 SAC619 C-CER,CHIP 2203-000995 SA

CN601 CONNECTOR-FPC/FFC/PIC 3708-002222 SAD300 DIODE-ARRAY 0407-001002 SAD401 DIODE-TVS 0406-001254 SAD402 DIODE-TVS 0406-001254 SAD403 DIODE-TVS 0406-001223 SAD404 DIODE-TVS 0406-001223 SAD501 DIODE-TVS 0406-001231 SAD502 DIODE-TVS 0406-001231 SAD503 DIODE-TVS 0406-001231 SAD504 DIODE-TVS 0406-001231 SAD505 DIODE-TVS 0406-001197 SAD506 DIODE-ZENER 0403-001547 SAD601 DIODE-TVS 0406-001150 SAF100 FILTER-SAW 2904-001731 SAF501 FILTER-EMI/ESD 2901-001349 SAF601 FILTER-EMI SMD 2901-001329 SA

IFC500 SOCKET-INTERFACE 3710-002499 SAL101 INDUCTOR-SMD 2703-002203 SAL102 INDUCTOR-SMD 2703-002700 SAL103 INDUCTOR-SMD 2703-002313 SAL104 INDUCTOR-SMD 2703-002313 SAL105 INDUCTOR-SMD 2703-002313 SAL106 INDUCTOR-SMD 2703-002558 SAL107 INDUCTOR-SMD 2703-002199 SAL108 INDUCTOR-SMD 2703-002267 SAL109 INDUCTOR-SMD 2703-002597 SAL110 R-CHIP 2007-000171 SAL301 INDUCTOR-SMD 2703-002309 SAL302 INDUCTOR-SMD 2703-002309 SAL401 BEAD-SMD 3301-001729 SAL402 BEAD-SMD 3301-001729 SAL403 BEAD-SMD 3301-001729 SAL404 BEAD-SMD 3301-001729 SAL405 BEAD-SMD 3301-001729 SAL406 BEAD-SMD 3301-001729 SAL407 INDUCTOR-SMD 2703-002313 SAL408 INDUCTOR-SMD 2703-002313 SA



6-4


Design LOC Description SEC Code STATUSL409 INDUCTOR-SMD 2703-002201 SAL501 BEAD-SMD 3301-001729 SAL502 BEAD-SMD 3301-001729 SAL503 INDUCTOR-SMD 2703-001513 SAL504 BEAD-SMD 3301-001729 SAL505 BEAD-SMD 3301-001729 SAL506 BEAD-SMD 3301-001729 SAL601 BEAD-SMD 3301-001729 SA

LED601 LED 0601-002199 SALED602 LED 0601-002199 SALED603 LED 0601-002199 SALED604 LED 0601-002199 SALED605 LED 0601-002199 SALED606 LED 0601-002199 SALED607 LED 0601-002199 SALED608 LED 0601-002199 SALED609 LED 0601-002199 SALED610 LED 0601-002199 SALED611 LED 0601-002199 SALED612 LED 0601-002199 SAMEM201 IC-MCP 1108-000059 SAOSC100 CRYSTAL-SMD 2801-004455 SAOSC300 CRYSTAL-SMD 2801-003856 SAPAM100 IC-POWER AMP 1201-002490 SA

Q501 FET-SILICON 0505-002088 SAR101 R-CHIP 2007-007092 SAR103 R-CHIP 2007-000143 SAR108 R-CHIP 2007-000143 SAR109 R-CHIP 2007-000143 SAR110 R-CHIP 2007-000143 SAR111 R-CHIP 2007-000143 SAR112 R-CHIP 2007-003001 SAR114 R-CHIP 2007-000932 SAR115 R-CHIP 2007-000932 SAR118 R-CHIP 2007-003001 SAR119 R-CHIP 2007-000932 SAR120 R-CHIP 2007-000932 SAR201 R-CHIP 2007-000162 SAR202 R-CHIP 2007-000171 SAR203 R-CHIP 2007-000162 SAR207 R-CHIP 2007-000171 SAR208 R-CHIP 2007-000162 SAR209 R-CHIP 2007-000162 SAR210 R-CHIP 2007-000174 SAR211 R-CHIP 2007-000171 SAR212 R-CHIP 2007-000162 SAR214 R-CHIP 2007-007107 SAR215 R-CHIP 2007-000159 SAR216 R-CHIP 2007-007142 SAR217 R-CHIP 2007-007107 SAR219 R-CHIP 2007-000162 SAR221 R-CHIP 2007-000162 SAR222 R-CHIP 2007-000162 SA



6-5


Design LOC Description SEC Code STATUSR223 R-CHIP 2007-000162 SAR224 R-CHIP 2007-007141 SAR225 R-CHIP 2007-000171 SAR226 R-CHIP 2007-000162 SAR228 R-CHIP 2007-000141 SAR229 R-CHIP 2007-000141 SAR233 R-CHIP 2007-000162 SAR234 R-CHIP 2007-000143 SAR301 R-CHIP 2007-007100 SAR304 R-CHIP 2007-002796 SAR305 R-CHIP 2007-007573 SAR306 R-CHIP 2007-007334 SAR307 R-CHIP 2007-009379 SAR308 R-CHIP 2007-000170 SAR309 R-CHIP 2007-000162 SAR310 R-CHIP 2007-001339 SAR311 R-CHIP 2007-000758 SAR312 R-CHIP 2007-000148 SAR402 R-CHIP 2007-000148 SAR404 R-CHIP 2007-000140 SAR405 R-CHIP 2007-000140 SAR406 R-CHIP 2007-002796 SAR407 R-CHIP 2007-002796 SAR408 R-CHIP 2007-000140 SAR409 R-CHIP 2007-000140 SAR410 R-CHIP 2007-000172 SAR411 R-CHIP 2007-000171 SAR412 R-CHIP 2007-000138 SAR413 R-CHIP 2007-000171 SAR414 R-CHIP 2007-000138 SAR415 R-CHIP 2007-000172 SAR416 R-CHIP 2007-000171 SAR417 R-CHIP 2007-000171 SAR418 R-CHIP 2007-000148 SAR419 R-CHIP 2007-000148 SAR420 R-CHIP 2007-000157 SAR421 R-CHIP 2007-000171 SAR422 R-CHIP 2007-000162 SAR423 R-CHIP 2007-000162 SAR500 R-CHIP 2007-007009 SAR501 R-CHIP 2007-007009 SAR502 R-CHIP 2007-000162 SAR504 R-CHIP 2007-007107 SAR505 R-CHIP 2007-001339 SAR507 R-CHIP 2007-000171 SAR508 R-CHIP 2007-000171 SAR509 R-CHIP 2007-007107 SAR510 R-CHIP 2007-000143 SAR511 R-CHIP 2007-000143 SAR512 R-CHIP 2007-000171 SAR517 R-CHIP 2007-000171 SAR518 R-CHIP 2007-007014 SAR519 R-CHIP 2007-001303 SA



6-6


Design LOC Description SEC Code STATUSR520 R-CHIP 2007-007014 SAR523 R-CHIP 2007-000162 SAR524 R-CHIP 2007-000140 SAR525 R-CHIP 2007-000162 SAR526 R-CHIP 2007-000172 SAR527 R-CHIP 2007-000172 SAR528 R-CHIP 2007-000172 SAR529 R-CHIP 2007-000172 SAR530 R-CHIP 2007-001339 SAR531 R-CHIP 2007-001339 SAR601 R-CHIP 2007-000162 SAR602 R-CHIP 2007-000140 SAR603 R-CHIP 2007-000171 SAR605 R-CHIP 2007-000171 SAR606 R-CHIP 2007-000171 SAR607 R-CHIP 2007-000171 SAR608 R-CHIP 2007-003004 SAR609 R-CHIP 2007-001288 SAR610 R-CHIP 2007-003030 SAR611 R-CHIP 2007-003030 SAR612 R-CHIP 2007-000174 SAR613 R-CHIP 2007-000174 SAR614 R-CHIP 2007-003004 SAR615 R-CHIP 2007-000174 SAR616 R-CHIP 2007-003030 SAR617 R-CHIP 2007-003030 SAR618 R-CHIP 2007-000174 SAR619 R-CHIP 2007-000162 SAR620 R-CHIP 2007-003030 SA

RFS100 CONNECTOR-COAXIAL 3705-001358 SASIM300 CONNECTOR-CARD EDGE 3709-001400 SATA100 C-TA,CHIP 2404-001496 SATA301 C-TA,CHIP 2404-001381 SATA302 C-TA,CHIP 2404-001381 SATA303 C-TA,CHIP 2404-001381 SATA401 C-TA,CHIP 2404-001424 SATA402 C-TA,CHIP 2404-001240 SATH200 THERMISTOR-NTC 1404-001221 SATR300 TR-POWER 0502-001116 SAU100 IC-TRANSCEIVER 1205-003278 SAU300 IC-POWER SUPERVISOR 1203-004550 SAU302 IC-POSI.FIXED REG. 1203-004338 SAU400 IC-ANALOG SWITCH 1001-001362 SAU401 IC-AUDIO AMP 1201-002492 SAU402 IC-DC/DC CONVERTER 1203-004765 SAU404 IC-TUNER 1204-002700 SAU501 IC ASIC-SGHC420 GH13-00057A SAU502 IC-CMOS LOGIC 0801-002237 SAU503 FET-SILICON 0505-001469 SAU601 FET-SILICON 0505-001469 SAU602 R-CHIP 2007-000162 SA

UCP200 IC-COMM. CONTROLLER 1205-003192 SAVR300 VARISTOR 1405-001082 SA



6-7


Design LOC Description SEC Code STATUSVR301 VARISTOR 1405-001082 SAVR601 VARISTOR 1405-001082 SAVR602 VARISTOR 1405-001082 SAVR603 VARISTOR 1405-001082 SAVR604 VARISTOR 1405-001082 SAVR605 VARISTOR 1405-001082 SAVR606 VARISTOR 1405-001082 SAVR607 VARISTOR 1405-001082 SAVR608 VARISTOR 1405-001082 SAVR609 VARISTOR 1405-001121 SAZD100 DIODE-TVS 0406-001267 SAZD300 DIODE-ZENER 0403-001340 SA



6-8



7. Block Diagrams

7-1

7-1. Main Block Diagram


Block Diagrams

7-2


7-2. RF Solution Block Diagram


8. PCB Diagrams

8-1


Top


PCB Diagrams

8-2


Bottom


9. Flow Chart of Troubleshooting


9-1

9-1. Power On

No

Not OK

Not OK

Not OK

Not OK

Check VCC_SYN_2.8Vand VDD3_1.8V of U101

Solder PMIC, U101, C120 and C121again

END

OK

Check the pin 1 ofOSC100 produces clock

signalSolder OSC100 again

OK

Check the pin 7 ofU101 produces 13Mpulse signal

Solder OSC100, U101 and C118again

OK

Is Power On working?

OK

Repeat sequence

Yes

Change batteryCheck battery voltageis higher than 3.3V

Yes

'POWER ON' does not work


Flow Chart of Troubleshooting

9-2

Power On




9-3

9-2. Initial

Initial Failure

Yes

Check VDD1, VDD3=1.8V,VDD2=2.8V and

AVDD=2.6V of UCP 200

Not OKCheck U300

OK

Check D_REF_13M ofUCP 200 Check U100 and POWER ON Sequence

OK

END

Not OK



9-4




9-5

9-3. SIM Part

"Insert SIM" is displayed on the LCD

The voltage is 2.8V

at the pin#1 SIM300

NoCheck UCP200, C419

Yes

Is there any signalpin #2,3,4 of SIM300?

Check UCP 200, U300No

Yes

Check the SIM Card

END



9-6

9-4. Microphone Part - Phone MIC

Phone MIC does not work

Yes

Not OKCheck the connection

of MIC Solder MIC again

Yes

Replace MIC

OK

Is Phone MIC working?

OK

Solder TA401, R405, R406 and R407again

Check the componentswhich are connected toMIC_BIAS_2.15V

Solder C401,C402, C404, C405, L401,L402, L403, L404 and R402 again

Check the circuitof MIC PART

OK

END

Solder R325 again and check U300Check MIC_BIAS_2.15V( When UCP200 operatesand call is connected )

Not OK

Not OK

No

Not OK

OK




9-7



9-8

9-5. Microphone Part - Earphone MIC

Earphone MIC does not work

Yes

Not OKCheck the connection

of IFC500 Solder pin 3, 4 of IFC500 again

Solder L501, L502, C407, C408,C413 and R418 again

Check the circuitof EAR MIC

OK

OK

Solder R325 again and check U300Check MIC_BIAS_2.15V( When UCP200 operatesand call is connected )

OK

END

Solder IFC500, R505 againCheck JACK IN is lowwhen ear jack is inserted.

Not OK

Not OK

Is Earphone MIC working? Repeat the sequence

Yes

No

OK

Not OK




9-9



9-10




9-11

9-6. Earphone Part

END

Yes

Earphone does not work

Yes

Not OKSolder pin 5,6,7 of IFC500

, L504, L505 and L506 again

Check the circuitof IFC500

OK

Check the voltages ofR502, R504, R505 andR530 are 2.8V

Not OKSolder R344, R346, R347 and R530

again

OK

Not OKCheck the circuit

R500, R501 and U401 Solder R500 and R501 again

OK

No

Check R410, R415, C217 and C218

No

Check UCP200 or Change UCP200

Is JACK_INT signalLOW?

(When UCP200 operates)Solder R505 again

Check EAR SW Solder F501 againNot OK

No

Ok



9-12




9-13



9-14

9-7. Charging Part

Abnormal charging operation

Yes

Not OK

Check DC jack

OK

Solder R307 again or change abattery

OK

Not OK

Check R307

Replace the TR300Check TR300 (E,B,C)

OK

Not OK

OK

END

Replace the U300Check the 32 Pin and33 Pin of U300

Not OK




9-15



9-16

9-8. Speaker Part

Speaker does not work

Yes

Not OK

Check R410 and R415

Solder L407 and L408 again

OK

Replace UCP200Check UCP200

OK

END

Replace the speaker

Not OK

Solder U401 again

Not OKCheck Pin #15, #17 of

U401

OK

Check L407 and L408

Not OKSolder R410 and R415 again or

replace U401

OK

Not OK




9-17



9-18

9-9. Key Data Input

When one of the keys ispushed,

is it displayed on LCD?

Check the Dome sheet & Key FPCB

END

No

Yes

Yes

Check Initial Operation

When one of the keys ispushed,

KEYSENSE(0)~(4),KYPD9~17

Replace the PBA

No

Yes




9-19

9-10. Back Light (for Color Main LCD)

Is BACKLIGHT setAlwaysON in the Menu?

Set BACKLIGHT on Always ON

END

No

Yes

Yes

Backlight does not work

Check the outflow voltageof U402(PIN 5) is equal to

3.7V

Replace U402Not OK

OK

Yes

Replace the LCD Module



9-20




9-21

9-11. Key Back Light

key Backlight does not work

Replace LED

Yes

OK

Not OKReplace U300Check V_KEY_3.2V

Yes

Yes

No

END

Set BACKLIGHT on Always ONIs BACKLIGHT setAlwaysON in the Menu?



9-22




9-23



9-24

9-15. GSM Receiver

RX ONRF INPUT=62CH

AMP=-50dBm

Yes

Check PAM100pin 7(EGSMRX)≥-65dBm

No Resolder or ChangePAM100

Yes

Yes

END

Check U100pin 17, 18 (EGSMRX)

≥-65dBm

>

No Resolder or ChangeF100

Check UCP200MOD_STANDBY=HIGH

PON_PA=LOWBAND=LOW

Yes

No Resolder or ChangeUCP200




9-25



9-26




9-27

9-15. GSM Transmitter

Yes

PAM100 Pin11≥ 30dBm

Resolder PAM100(TX MODULE)

TX ON (5Level)

PAM100 pin17≥ 20dBm

Resolder U100(TRANSCEIVER)

Yes

Yes

No

No

END

Check UCP200

Yes



9-28




9-29



9-30

9-16. DCS Receiver

Yes

Check PAM100pin 15(DCSRX)≥-65dBm

No Resolder or ChangePAM100

Yes

Yes

END

Check U100pin 15, 16 (DCSRX)

≥-65dBm

>

No Resolder or ChangeF100

Check UCP200MOD_STANDBY= "HIGH"

PON_PA= "LOW"BAND= "HIGH"

Yes

No Resolder or ChangeUCP200

RX ONRF INPUT=698CH

AMP=-50dBm




9-31



9-32




9-33

9-17. DCS Transmitter

PAM100 Pin11≥ 30dBm

Resolder PAM100(TX MODULE)

TX ON (5Level)

PAM100 pin19≥ 20dBm

Resolder U100(TRANSCEIVER)

END

Check UCP200



9-34




9-35



9-36


10. Reference data

10-1


Reference Abbreviate

― ARFCN : Absolute Radio Frequency Channel Number― BER : Bit Error Rate― BPSK: Binary Phase Shift Keying― ESD : Electrostatically Sensitive Devices― ETSI: European Telecommunications Standards Institute― MS: Mobile Station― QPSK: Quadrature Phase Shift Keying― RF : Radio Frequency― TDMA : Time Division Multiple Access


Reference data

10-2



11. Disassembly and Assembly Instructions

11-1


1) Be cautious when you remove a screw. It is

possible to damage a case or to scratch the one.



1) Be careful for breaking a component.1) Be careful for damaging a speaker wire and a LCDwire.

11-1. Disassembly Instructions

3 Detach a locker which holds a PBA. 4 Detach a speaker by using a pincette.

1) Remove 4 screws from a rear case REAR

Screw.

1 2) Disassemble a rear case by using adisassembly knife.

2


Disassembly and Assembly Instructions

11-2


1) The Keypad should be inserted accurately into a

front case.

1) Be careful for inserting a LCD. Dust may be

attached to the LCD screen.

2) Be cautious when inserting a speaker. There is a

possibility for disconnecting a wire.





11-2. Assembly Instructions

1 2

3 4

1) Put a Keypad to a front case. 1)Insert a speaker and a LCD to a front case.

2)Insert a MIC to a hole which is shown below.

1) After pulling an earjack cover, assemble arear case to a front case like this.

1) Screw on a rear case with 4 screws.

Documents

Samsung SGH-C450 service manual - narod.ru · PDF fileSamsung Electronics Co.,Ltd. 2007. 08 Rev.1.0 This Service Manual is a property of Samsung Electronics Co.,Ltd. ⓒ Any unauthorized