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Samsung SGH-Q208 Service Manual
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Samsung SGH-Q208 Service Manual

Samsung SGH-Q208 Service Manual

Gprs gsm telephone
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SERVICE
GPRS GSM TELEPHONE
GPRS GSM TELEPHONE
SGH-Q208
Manual
CONTENTS
1. Electrical Parts List
2. Exploded Views and Parts List
3. Block Diagrams
4. PCB Diagrams
5. Flow Chart of Troubleshooting and
Circuit Diagrams

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Summary of Contents for Samsung SGH-Q208

  • Page 1 GPRS GSM TELEPHONE SGH-Q208 SERVICE Manual GPRS GSM TELEPHONE CONTENTS 1. Electrical Parts List 2. Exploded Views and Parts List 3. Block Diagrams 4. PCB Diagrams 5. Flow Chart of Troubleshooting and Circuit Diagrams...
  • Page 2 ELECTRONICS © Samsung Electronics Co.,Ltd. April. 2002 Pinted in Korea. Code No.: GH68-02791A BASIC.

  • Page 3: Electrical Parts List

    LABEL(P)-BARCODE SHIPPING SGH-A100, ART, 100 G, 250, 100, -, WHT, GH68-01819A LABEL(P)-SECURITY SGH-M100, ART, 100 G, 100, 100, -, WHT, -, -, - GH68-02107B LABEL(R)-MAIN SGH-Q208, MAT, T0.05, 32.7, 40.7, -, SIL, -, -, - GH68-11067B LABEL(P)-BARCODE(INDA) SGH-A100, ART, 100 G, 65, 69, -, WHT, -, -, - GH69-00842A BAG-VINYL HANDSET SGH-A300, LDPE, T0.06, 80, 170, TR P, -...
  • Page 4 C-CERAMIC, CHIP 0.047 NF, 5 %, 50 V, NP0, TP, 1005 2203-000995 C212 C-CERAMIC, CHIP 0.047 NF, 5 %, 50 V, NP0, TP, 1005 2203-000995 C213 C-CERAMIC, CHIP 0.047 NF, 5 %, 50 V, NP0, TP, 1005 SAMSUNG Proprietary-Contents may change without notice...
  • Page 5 C-CERAMIC, CHIP 100 NF, +80-20 %, 16 V, Y5 V, TP, 1005 2203-000628 C611 C-CERAMIC, CHIP 0.022 NF, 5 %, 50 V, NP0, TP, 1005 2203-000628 C612 C-CERAMIC, CHIP 0.022 NF, 5 %, 50 V, NP0, TP, 1005 SAMSUNG Proprietary-Contents may change without notice...
  • Page 6 C-CERAMIC, CHIP 0.003 NF, 0.25 PF, 50 V, NP0, TP, 1005 2203-000438 C903 C-CERAMIC, CHIP 1 NF, 10 %, 50 V, X7R, TP, 1005, - 2203-001201 C905 C-CERAMIC, CHIP 0.007 NF, 0.5 PF, 50 V, NP0, TP, 1005 SAMSUNG Proprietary-Contents may change without notice...
  • Page 7 C-CERAMIC, CHIP 0.033 NF, 5 %, 50 V, NP0, TP, 1005 2203-000812 C968 C-CERAMIC, CHIP 0.033 NF, 5 %, 50 V, NP0, TP, 1005 2203-000812 C969 C-CERAMIC, CHIP 0.033 NF, 5 %, 50 V, NP0, TP, 1005 SAMSUNG Proprietary-Contents may change without notice...

  • Page 8: C-Ceramic, Chip 0.027 Nf, 5 %, 50 V, Np0,

    INDUCTOR-SMD 15 NH, 5 %, 1.6 X 0.8 X 0.8 mm 2703-001132 L1002 INDUCTOR-SMD 4.7 NH, 5 %, 1.6 X 0.8 X 0.8 mm 2703-001288 L1004 INDUCTOR-SMD 2.7 NH, 0.5 NH, 1.6 X 0.8 X 0.8 mm SAMSUNG Proprietary-Contents may change without notice...
  • Page 9 TR-SMALL SIGNAL 2SD2114K, NPN, 200m W, SOT-23, TP, 8 0501-000162 Q501 TR-SMALL SIGNAL 2SA1576, PN P, 200M W, SOT-323, TP, 180-390 0501-002011 Q502 TR-SMALL SIGNAL 2SD2114K, NPN, 200m W, SOT-23, TP, 8 0504-000167 Q503 TR-DIGITAL RN1102, NPN, 100M W, 10K/10K, SSM, TP SAMSUNG Proprietary-Contents may change without notice...
  • Page 10 R-CHIP 10 Kohm, 5 %, 1/16 W, DA, TP, 1005 2007-000148 R115 R-CHIP 10 Kohm, 5 %, 1/16 W, DA, TP, 1005 2007-000162 R116 R-CHIP 100 Kohm, 5 %, 1/16 W, DA, TP, 1005 SAMSUNG Proprietary-Contents may change without notice...
  • Page 11 R-CHIP 1 Kohm, 5 %, 1/16 W, DA, TP, 1005 2007-000143 R323 R-CHIP 4.7 Kohm, 5 %, 1/16 W, DA, TP, 1005 2007-000839 R324 R-CHIP 39 ohm, 5 %, 1/16 W, DA, TP, 1608 SAMSUNG Proprietary-Contents may change without notice...
  • Page 12 R-CHIP 0 OHM, 5 %, 1/16 W, DA, TP, 1005 2007-007771 R617 R-CHIP 0 OHM, 5 %, 1/16 W, DA, TP, 1005 2007-000172 R618 R-CHIP 10 ohm, 5 %, 1/16 W, DA, TP, 1005 SAMSUNG Proprietary-Contents may change without notice 1-10...
  • Page 13 R-CHIP 51 ohm, 5 %, 1/16 W, DA, TP, 1005 2007-007771 R914 R-CHIP 0 OHM, 5 %, 1/16 W, DA, TP, 1005 2007-000172 R915 R-CHIP 10 ohm, 5 %, 1/16 W, DA, TP, 1005 SAMSUNG Proprietary-Contents may change without notice 1-11...
  • Page 14 IC-ANALOG SWITCH MA X 4544EUT-T, -, SOT-23, 6 P, -, SINGLE, 13 V, - 0504-001071 U402 TR-DIGITAL UMD9N, NPN/PN P, 150m W, 4.7, UMT6, TP 1106-001301 U501 IC-SRAM 1337, 262K x 16Bit, CS P, 72 P, -, 85nS, 3 V, -, PLASTIC, -25to+85C, SAMSUNG Proprietary-Contents may change without notice 1-12...
  • Page 15 VARISTOR 5.6 V, 20A, 1 x 0.5 x 0.6 mm, TP 1405-001082 ZD404 VARISTOR 5.6 V, 20A, 1 x 0.5 x 0.6 mm, TP 1405-001082 ZD405 VARISTOR 5.6 V, 20A, 1 x 0.5 x 0.6 mm, TP SAMSUNG Proprietary-Contents may change without notice 1-13...
  • Page 16 2. SGH-Q208 Exploded View and its Parts List 2-1. Cellular phone Exploded View SAMSUNG Proprietary-Contents may change without notice...

  • Page 17: Cellular Phone Parts List

    SGH-Q208 Exploded view and its Part List 2-2. Cellular phone Parts List SEC CODE Location Description Remark M/Silver PWHITE BGOLD DUAL LCD WINDOW GH72-02482B GH72-02482A GH72-02482A FOLDER UPPER GH75-01101A GH75-01101A GH75-01101A CON ASS’Y GH59-00272A GH59-00272A GH59-00272A LCD ASS’Y GH07-00093A GH07-00093A...
  • Page 18 SGH-Q208 Exploded view and its Part List 2-3. Test Jig (GH80-00865A) Data Cable Test Cable (GH39-00127A) SWITCH MODE POWER DEBUG DEBUG HIGH CONNECT HIGH CONNECT SAMSUNG Proprietary-Contents may change without notice...

  • Page 19: Block Diagrams

    3. SGH-Q208 Block Diagrams 3-1. RF Solution Block Diagram SAMSUNG Proprietary-Contents may change without notice...

  • Page 20: Base Band Solution Block Diagram

    SGH-Q208 Block Diagrams 3-2. Base Band Solution Block Diagram SAMSUNG Proprietary-Contents may change without notice...

  • Page 21: Pcb Diagrams

    ZD312 C402 C501 R408 R504 C968 ZD315 U1002 ZD316 F904 ZD310 ZD317 R1017 OSC903 C510 R507 D302 R510 U504 C522 C509 R511 Q501 R520 Q502 R516 C1009 R502 C1007 C973 C974 C1008 ZD401 C421 SAMSUNG Proprietary-Contents may change without notice...
  • Page 22 C1013 R211 ZD405 C412 R231 C215 C208 Q601 R330 R206 R102 R210 Q301 R117 R605 C203 ZD404 R324 CN203 Q603 AU501 Q201 ZD402 R619 C115 R322 Q602 R218 R618 C116 R217 C204 C205 U102 SAMSUNG Proprietary-Contents may change without notice...

  • Page 23: Flow Chart Of Troubleshooting And

    5.SGH-Q208 Flow Chart of Troubleshooting and Circuit Diagrams 5-1. Power ON ‘POWER ON’ does not work Check the current Download again consumption more than 100 mA Check the Voltage more Charge the Battery than 3.3V Check the pin Check U101 and C112 4 of U101 is more than 2.85 V...
  • Page 24 SGH-Q208 Flow Chart of Troubleshooting and Circuit Diagrams 5-2. Initial Initial Failure Check the signal at the pin 17 of Check U101 U101 is “High” when the phone is boot on Check the pin 18 Check the U701 of U101 is “High”...

  • Page 25: Sim Part

    SGH-Q208 Flow Chart of Troubleshooting and Circuit Diagrams 5-3. Sim Part Phone can’t access SIM card Check the pin 1 of CN801. Check the circuit related to U802 voltage 2.8 V ? Check the SIM connector’s (CN801) Resolder or change CN801...

  • Page 26: Charging Part

    SGH-Q208 Flow Chart of Troubleshooting and Circuit Diagrams 5-4. Charging Part Abnormal charging part Check the pin 17, 18 of CN301 Replace TA is around 5 V Check the pin 2 of Resolder U202, R204, R203 U202 is “Low” Check the U601...

  • Page 27: Microphone Part

    SGH-Q208 Flow Chart of Troubleshooting and Circuit Diagrams 5-5. Microphone Part Micro Phone does not work Refabricate or change the check the contact status microphone holder. of microphone. Check the reference Resolder or change voltage on mic path R427, C410, R407, C404, R403, R405 C410 2.5 V...

  • Page 28: Speaker Part

    SGH-Q208 Flow Chart of Troubleshooting and Circuit Diagrams 5-6. Speaker Part Speaker does not work Check the connection Resolder and check the board to status SPK to CN203 board connector Check the soldered status of ear Resolder or change CN401...

  • Page 29: Key Data Input

    SGH-Q208 Flow Chart of Troubleshooting and Circuit Diagrams 5-7. Key Data Input Check initial operation Check the connection between CN202 and LCD module PCB When one of the keys is Check the U601 pushed, one of pin [2,4,6,8,10] of CN202 is “High”?

  • Page 30: Ring Indicator

    SGH-Q208 Flow Chart of Troubleshooting and Circuit Diagrams 5-8. Ring Indicator Ring Indicator does not work Check the connection between CN203 and Keypad PCB Check the Q601 pin 2 is Check U601 “High” Check the Q601~3 pin 3 Replace Q601/Q602/Q603 is “Low”...

  • Page 31: Back Light

    SGH-Q208 Flow Chart of Troubleshooting and Circuit Diagrams 5-9. Back Light Backlight does not work Check the soldered status of EL pad Backlight “ON” mode in Select backlight “ON” mode the menu ? Resolder or change Q301, R322 Q301 pin 1 = “High” ?

  • Page 32: Alert Tone

    SGH-Q208 Flow Chart of Troubleshooting and Circuit Diagrams 5-10. Alert Tone Abnormal Alert tone Alert tone on by pushing the key #0289# Is there alert wave signal on the Resolder or replace R508 Q508 during alert tone test? Is there...

  • Page 33: Gsm Receiver

    SGH-Q208 Flow Chart of Troubleshooting and Circuit Diagrams 5-11. GSM Receiver RX On •All or RF values by dBm should be measured in max hold status of RF input : 62 CH RF spectrum analyzer in active call Amp. : -50 dBm...

  • Page 34: Gsm Transmitter

    SGH-Q208 Flow Chart of Troubleshooting and Circuit Diagrams 5-12. GSM Transmitter GSM TX U1006 Change CN1001 9 pin : 33 dBm? U1006 2, 8 pin:High? 4, 10 pin:Low? U1005 Change U1005 2 pin:High? OSC903 Change U1006 3 pin:0.8 V~2.5 V?

  • Page 35: Dcs Receiver

    SGH-Q208 Flow Chart of Troubleshooting and Circuit Diagrams 5-13. DCS Receiver RX On •All or RF values by dBm should be measured in max hold status of RF input : 62 CH RF spectrum analyzer in active call Amp. : -50 dBm...

  • Page 36: Dcs Transmitter

    SGH-Q208 Flow Chart of Troubleshooting and Circuit Diagrams 5-14. DCS Transmitter DCS TX U1006 Change CN1001 9 pin : 30 dBm? U1006 2, 8 pin:Low? 4, 10 pin:High? U1005 Change U1005 2 pin:High? OSC903 Change 3 pin:0.8 V~2.5 V? U1006...
  • Page 37 SGH-Q208 Flow Chart of Troubleshooting and Circuit Diagrams 5-15. Power Circuit Diagram Engineer COMPANY NAME POWER SAMY Drawn by SAMY R&D CHK Size TITLE: DOC CTRL CHK SGH-Q208 MFG ENGR CHK Changed by Date Changed Time Changed QA CHK Drawing Number 2002.01.17...
  • Page 38 SGH-Q208 Flow Chart of Troubleshooting and Circuit Diagrams 5-16. Charger & B'D-TO-B'D Connector Circuit Diagram CHARGER Engineer COMPANY NAME user5 Address Drawn by City user5 R&D CHK Size TITLE: B’D-TO-B’D CONNECTOR DOC CTRL CHK SGH-Q208 MFG ENGR CHK Changed by...
  • Page 39 SGH-Q208 Flow Chart of Troubleshooting and Circuit Diagrams 5-17. I/F Connector Circuit Diagram I/F CONNECTOR Engineer COMPANY NAME SAMY Drawn by SAMY R&D CHK Size TITLE: DOC CTRL CHK SGH-Q208 MFG ENGR CHK Changed by Date Changed Time Changed QA CHK...
  • Page 40 SGH-Q208 Flow Chart of Troubleshooting and Circuit Diagrams 5-18. Audio Circuit Diagram Engineer COMPANY NAME SAMY AUDIO Drawn by SAMY R&D CHK Size TITLE: DOC CTRL CHK SGH-Q208 MFG ENGR CHK Changed by Date Changed Time Changed QA CHK Drawing Number 2002.01.17...
  • Page 41 SGH-Q208 Flow Chart of Troubleshooting and Circuit Diagrams 5-19. Memory & Buzzer Circuit Diagram MEMORY BUZZER Engineer COMPANY NAME SAMY Drawn by SAMY R&D CHK Size TITLE: DOC CTRL CHK SGH-Q208 MFG ENGR CHK Changed by Date Changed Time Changed...
  • Page 42 SGH-Q208 Flow Chart of Troubleshooting and Circuit Diagrams 5-20. Trident Circuit Diagram TRIDENT Engineer COMPANY NAME SAMY Drawn by SAMY R&D CHK Size TITLE DOC CTRL CHK SGH-Q208 MFG ENGR CHK Changed by Date Changed Time Changed QA CHK Drawing Number 2002.01.17...
  • Page 43 SGH-Q208 Flow Chart of Troubleshooting and Circuit Diagrams 5-21. CSP1089 Circuit Diagram CSP1089 Engineer COMPANY NAME SAMY Drawn by SAMY R&D CHK Size TITLE: DOC CTRL CHK SGH-Q208 MFG ENGR CHK Changed by Date Changed Time Changed QA CHK Drawing Number Sheet 2002.01.17...
  • Page 44 SGH-Q208 Flow Chart of Troubleshooting and Circuit Diagrams 5-22. X-TAL(13 MHz) & SIM Circuit Diagram X-TAL(13MHz) Engineer COMPANY NAME SAMY Drawn by SAMY R&D CHK Size TITLE: DOC CTRL CHK SGH-Q208 MFG ENGR CHK Changed by Date Changed Time Changed...
  • Page 45 SGH-Q208 Flow Chart of Troubleshooting and Circuit Diagrams 5-23. Bright3 Circuit Diagram FILM_CAP FILM_CAP FILM_CAP FILM_CAP FILM_CAP FILM_CAP Engineer Engineer COMPANY NAME COMPANY NAME SAMY SAMY Drawn by Drawn by BRIGHT3 SAMY SAMY R&D CHK R&D CHK Size Size TITLE:...
  • Page 46 SGH-Q208 Flow Chart of Troubleshooting and Circuit Diagrams 5-24. Transmitter & Receiver Circuit Diagram 1 GSM POUTGSM 2 VAPC POUTDCS U1002 Engineer COMPANY NAME SAMY Drawn by SAMY R&D CHK Size TITLE: TRANSMITTER & RECEIVER DOC CTRL CHK SGH-Q208 MFG ENGR CHK...

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