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Samsung SGH-X400 Service Manual

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SERVICE
GSM TELEPHONE
GSM TELEPHONE
SGH-X400
Manual
CONTENTS
1.
Specification
2.
Exploded Views and Parts List
3.
Electrical Parts List
4.
Flow Chart of Troubleshooting
5.
Block Diagrams
6.
PCB Diagrams

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Summary of Contents for Samsung SGH-X400

  • Page 1 GSM TELEPHONE SGH-X400 Manual SERVICE GSM TELEPHONE CONTENTS Specification Exploded Views and Parts List Electrical Parts List Flow Chart of Troubleshooting Block Diagrams PCB Diagrams...

  • Page 2: Specification

    5pcl ~ 19pcl 0pcl ~ 15pcl 0pcl ~ 15pcl Sensit ivit y - 102dBm -102dBm - 100dBm - 100dBm TDMA Mux Cell Radius 35Km 35Km SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization...

  • Page 3: Gsm Tx Power Class

    11±5 dBm 8±4dBm 8±4dBm 9±5 dBm 6±4 dBm 6±4 dBm 7±5 dBm 4±4 dBm 4±4 dBm 5±5 dBm 2±5 dBm 2±5 dBm 0±5 dBm 0±5 dBm SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization...
  • Page 4 2. SGH-X400 Exploded View and its Parts list 1. Cellular phone E xplod ed View 2- 1 SAMSUNG Proprietary-Contents may change without notice Thi s Document can not be used wi thout Samsung's author ization...
  • Page 5 DOME SHEET GH59-00745A IF COVER GH73-01688B GH30-00015A ANTENNA GH42-00285A REAR COVER GH75-02634B SCREW 6001-001478 SCREW CAP GH73-01692B RF COVER GH73-01743B GH43-00830B 900MAH BATTERY 620MAH GH43-00853B SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization...
  • Page 6 SGH-X400 Exploded view and its Part list 3. Test Jig (GH80-00865A) 3-1. RF Test Cable 3-2. Test Cable 3-3. Serial Cable (GH39-00090A) (GH00-00127A) 3-4. Power Supply Cable 3-5. DATA CABLE (GH39-00159A) SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization...

  • Page 7: Electrical Parts List

    C202 2203-000438 C1101 2203-006113 C203 2203-000679 C1102 2203-006113 C204 2203-000995 C1103 2203-006113 C205 2203-001405 C1104 2203-006113 C208 2404-001105 C1105 2203-006113 C209 2203-000885 C1106 2203-006257 C212 SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization...
  • Page 8 C707 2203-005061 C422 2203-005480 C708 2203-005065 C423 2203-005480 C709 2203-000438 C425 2203-000254 C710 2203-000438 C426 2203-000254 C711 2203-005682 C430 2203-000254 C712 2203-005682 C431 2203-000233 C801 SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization...
  • Page 9 R1001 2703-001235 L401 2007-001307 R1002 2703-001235 L402 2007-007008 R1003 2703-001235 L403 2007-007008 R1004 2703-001235 L490 2007-001288 R1005 2703-001751 L901 2007-001307 R1006 0601-001819 LED201 2007-007008 R1007 SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization...
  • Page 10 R432 2007-008587 R225 2007-008587 R433 2007-008587 R226 2007-008587 R434 2007-008587 R227 2007-008587 R435 2007-000157 R301 2007-008587 R436 2007-000157 R302 2007-008587 R437 2007-000157 R303 2007-000171 R502 SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization...
  • Page 11 U101 1203-002902 U102 1204-002023 U1101 1201-001951 U1102 1203-002054 U1103 1009-001010 U202 1001-001183 U401 1204-002161 U402 1001-001152 U403 1109-001274 U501 GH09-00023A U601 1209-001219 U602 1204-001984 U701 SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization...

  • Page 12: Flow Chart Of Troubleshooting

    OSC801 Check the clock generation Freq=13MHz ? circuit Vrms≥300mV ? (related to OSC801) Vpp is around 900mVpp ? Check the initial operation SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization...
  • Page 13 U102 is "High" Check the soldered status of Check the pin 4 of OSC801 is around 2.8V OSC801,R801,U102 Check LCD connector CN201, and resolder bridge SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization...
  • Page 14 Check the related circuit of input CN101 circuitry Check the circuit around U601 Check the related circuit of output and vlotage supply circuitry U601 and U102 SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization...
  • Page 15 Check the pin 5 of Check the U101 U101 is "3.2~4.2V"? Check the pin 5 1.5V~1V(during Check the U101 or Resolder or change R102 charging) and around 200mV(full charging)? SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization...
  • Page 16 SGH-X400 Flow Chart of Troubleshooting SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization...
  • Page 17 SGH-X400 Flow Chart of Troubleshooting SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization...
  • Page 18 SGH-X400 Flow Chart of Troubleshooting SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization...
  • Page 19 Resolder or change R413, reference voltage pin 42 of C420, R412, R411, R408, on mic path U102 is C410 C410 ≒ 2.0V "2.8V" Is microphone ok? Check U701 SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization...
  • Page 20 CN201 to LCD to U401 module Check the PIN 4 and PIN 8 of Check U601 U401='High'? Check U701 Is speaker ok? Change Speaker Is speaker ok? SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization...
  • Page 21 SGH-X400 Flow Chart of Troubleshooting 4-10 SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization...
  • Page 22 SGH-X400 Flow Chart of Troubleshooting 4-11 SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization...
  • Page 23 Check the solderings of those capacitors the C1111 Check the amplified 'Audio signal' Check for any broken connection waveform at the Pin1 of U1102 Check the headset 4-12 SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization...
  • Page 24 SGH-X400 Flow Chart of Troubleshooting 4-13 SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization...
  • Page 25 U901 resolder or change U902 pin1, 2 U902 Vp-p : resolder or change 250mV ? U901 pin 2,3,4,5 Vp-p : 100mV ? CHECK U701 4-14 SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization...

  • Page 26: Egsm Transmitter

    U903 U701 pin 4 : 3V ? change or resolder pin9,10,11,1213 check or change : 3V? U903 change or resolder U902 change or resolder 4-15 SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization...
  • Page 27 U901 resolder or change U902 pin1, 2 U902 Vp-p : 250mV ? resolder or change U901 pin 2,3,4,5 Vp-p : 100mV ? CHECK U701 4-16 SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization...
  • Page 28 20 : 2.8V ? U901 resolder or change U902 pin1,2 U902 Vp-p : 250mV ? resolder or change U901 pin 2,3,4,5 Vp-p : 100mV ? Check U701 4-17 SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization...
  • Page 29 U903 pin 4 : 3V ? change or resolder U701 pin9,10,11,1213 check or change : 3V? U903 change or resolder U902 change or resolder 4-18 SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization...
  • Page 30 SGH-X400 Flow Chart of Troubleshooting 4-19 SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization...
  • Page 31 SGH-X400 Flow Chart of Troubleshooting 4-20 SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization...
  • Page 32 SGH-X400 Flow Chart of Troubleshooting 4-21 SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization...
  • Page 33 SGH-X400 Flow Chart of Troubleshooting 4-22 SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization...

  • Page 34: Block Diagrams

    DSP16000 SI4200 SERIAL DATA, SERIAL DATA ARM7TDMI CLK, INTERFACE GSM:890MHz~915MHz D E T DCS:1710MHz~1785MHz TCVCXO 13 MHz PCS:1850MHz~1910MHz A F C C L K SI4133T SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization...
  • Page 35 JTAG X-TAL DAIDO 32.768KHz DAIDI JTAG/ICE KEYBOARD Audio Part JTAG/ICE Audio SRAM SRAM FLASH FLASH (16M) (16M) (64M) (64M) Keypad B'D B'D con. Memory part SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization...
  • Page 36 FM ANT (EAR MIC+) Resonance Mixer Matching Circuit Limiter Demodulator Tuning 13MHz Soft Mute System SPK+/- TEA5767 (Radio IC) Audio Decoder TRIDENT I2C_DATA I2C/3WIRE BUS I2C_CLK SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization...

  • Page 37: Pcb Diagrams

    R1008 L1007 C1014 R105 C906 CN101 U102 R106 U602 L1001 U901 M101 L1005 Q103 R603 C1009 R109 U1002 C1008 C115 R110 C1006 C114 C612 C1005 SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization...
  • Page 38 ZD402 SEND ZD404 C302 LEFT LED208 LED212 LED204 LED203 LED205 U202 Q102 R104 CLEAR DOWN R705 U703 LED214 LED213 LED211 LED207 LED201 RIGHT U201 END_PWD SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization...
  • Page 39 ELECTRONICS ⓒ Samsung Electronics Co.,Ltd. SEP. 2003 Printed in Korea. This Service Manual is a property of Samsung Electronics Co.,Ltd. Any unauthorized use of Manual can be punished under applicable Code No.: GH68-03843A International and/or domestic law. BASIC.