Samsung SGH-X640 Service Manual Download | Manualshive

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SAMSUNG Proprietary-Contents may change without notice

This Document can not be used without Samsung's authorization

Flow Chart of Troubleshooting

7-

14

9. LCD Part

Is LCD Contrast set on high

level in the Menu?

Set LCD Contrast on high level

END

No

Yes

Yes

LCD does not work

HDC700 pin 24 = 2.8V?

Check the R304, C308

No

Yes

HDC700 pin 19(L_WR),

20(RS) is OK?

Check the U303

No

Yes

Yes

Replace the LCD Module

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Summary of Contents for SGH-X640

Page 1: ... X640 1 Specification 2 Circuit Description 3 Exploded Views and Parts List 4 Electrical Parts List 5 Block Diagrams 6 PCB Diagrams 7 Flow Chart of Troubleshooting SAMSUNG Anycall CONTENTS SAMSUNG Anycall ...

Page 2: ...o Ltd March 2005 Printed in Korea Code No GH68 06819A BASIC ⓒ This Service Manual is a property of Samsung Electronics Co Ltd Any unauthorized use of Manual can be punished under applicable International and or domestic law ...

Page 3: ...975 1023 512 885 512 810 Tx Rx spacing 45MHz 45MHz 95MHz 80MHz Mod Bit rate Bit Period 270 833kbps 3 692us 270 833kbps 3 692us 270 833kbps 3 692us 270 833kbps 3 692us Time Slot Period Frame Period 576 9us 4 615ms 576 9us 4 615ms 576 9us 4 615ms 576 9us 4 615ms Modulation 0 3GMSK 0 3GMSK 0 3GMSK 0 3GMSK MS Power 33dBm 13dBm 33dBm 5dBm 30dBm 0dBm 30dBm 0dBm Power Class 5pcl 15pcl 5pcl 19pcl 0pcl 15p...

Page 4: ...dBm 11 8 4dBm 12 6 4 dBm 13 4 4 dBm 14 2 5 dBm 15 0 5 dBm TX Power control 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 Power control 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 ...

Page 5: ...T After additional process the reference clock applies to the U100 Rx IQ demodulator and Tx IQ modulator And then the oscillator is controlled by serial data to select channel and use fast lock mode for GPRS high class operation 5 Transceiver U100 The receiver front end which amplifies the GSM DCS aerial signal converts the chosen channel down to a low IF signal of 100 kHz The first stages are sym...

Page 6: ... Voltage Charge pump Clock generator aid in reducing both board area and system complexity I2C BUS serial interface provides access to control and configuration registers This interface gives a microprocessor full control of the PCF50601 and enables system designers to maximize both standby and talk times Supervisory functions including a reset generator an input voltage monitor and a temperature ...

Page 7: ...ses the EMI ESD filter EMIF09 to protect noise from IF CONNECTOR part 5 IF connetor It is 18 pin connector They are designed to use VBAT V_EXT_CHARGE TXD0 RXD0 RTS0 CTS0 JIG_REC CHARGER_OK RXD1 TXD1 AUX_MIC AUX_SPK and GND They connected to power supply IC microprocessor and signal processor IC 6 Battery Charge Management A complete constant current constant voltage linear charger is used for sing...

Page 8: ... OM6359 and MV317S It has 26 bit address lines HA 1 26 CS_NAND and NCSRAM signals are chip select Writing process HWR_N is low and it enables writing process to flash memory and SRAM During reading process HRD_N is low and it enables reading process to flash memory and SRAM Each chip select signals in the OM6359 select memory among 2 flash memory and SCRAM Reading or writing procedure is processed...

Page 9: ... burden In hence Tiger will allow the user to be able to display to LCD direct without burdening the main processor It also allows to have various kinds of display size on the LCD and snapshot for Jpeg Digital effect will also be executed on real time base resulting Tiger as being a video co processor in the mobile platform Also an i80 type processor s 16bit parallel interface of Tiger makes it av...

Page 10: ...SAMSUNG Proprietary Contents may change without notice Circuit Description 2 6 This Document can not be used without Samsung s authorization ...

Page 11: ...and Parts list 3 1 This Document can not be used without Samsung s authorization 1 Cellular phone Exploded View QFU01 QPC01 QVO01 QRF03 QCR08 QME01 QAN02 QRF01 QLC01 QCA01 QFL01 QCR17 QSC08 QMW02 QSP01 QFR01 QKP01 QMI01 QMP01 QRE01 QBA01 QCR21 QIF01 QCK01 QMO01 QSC05 QMI03 ...

Page 12: ...5 06200A QSC05 SCREW SHEET R GH74 08872A QSC08 SCREW SHEET L GH74 08873A QCR17 SCREW MACHINE 6001 001639 QMW02 WINDOW MAIN GH72 19197A QFR01 FRONT COVER GH75 06331A QRF03 EAR COVER GH72 19199A QMI03 MIC RUBBER GH73 04064A QCK01 CAMERA KEY GH75 06567A QVO01 VOLKEY ASSY GH75 06566A QKP01 KEYPAD GH75 06201A QMP01 MAIN PBA GH92 02030A QME01 UNIT METAL DOME GH59 01921A QMI01 MICROPHONE ASSY GH30 00130A...

Page 13: ...xploded view and Part list 3 3 This Document can not be used without Samsung s authorization 3 Test Jig GH80 01909A 3 1 RF Test Cable GH39 00283A 3 2 Test Cable GH39 00217A 3 3 Serial Cable 3 4 Power Supply Cable 3 5 DATA CABLE GH39 00219A 3 6 TA GH44 00482A ...

Page 14: ...SAMSUNG Proprietary Contents may change without notice Exploded view and Part list 3 4 This Document can not be used without Samsung s authorization ...

Page 15: ...6053 C126 2203 000254 C127 2203 005482 C128 2203 005057 C129 2203 005057 C130 2203 005482 C131 2203 000233 C132 2203 001153 C133 2203 000604 C134 2203 000854 C135 2203 000278 Design LOC SEC CODE C136 2203 000585 C137 2203 000585 C138 2203 000585 C139 2203 000585 C141 2404 001239 C142 2203 000254 C144 2203 000812 C145 2203 000233 C146 2203 000233 C147 2203 001385 C148 2203 000311 C149 2203 000585 C...

Page 16: ...4 C417 2203 000888 C418 2203 006208 C419 2203 006208 C420 2203 006208 C421 2404 001225 C422 2203 005482 C424 2404 001225 C425 2203 001652 C426 2203 006053 C427 2404 001225 Design LOC SEC CODE C428 2203 006053 C429 2203 006053 C430 2203 006053 C431 2203 006053 C502 2203 005061 C505 2203 005061 C506 2404 001268 C507 2404 001268 C508 2203 005061 C600 2203 000330 C602 2203 000995 C603 2203 005061 C604...

Page 17: ...01723 L113 2703 001723 L114 2703 001970 L620 3301 001729 LED700 0601 001602 LED701 0601 001602 LED702 0601 001602 LED703 0601 001602 LED704 0601 001602 LED705 0601 001602 Design LOC SEC CODE LED706 0601 001602 LED707 0601 001790 LED708 0601 001602 LED710 0601 001790 LED711 0601 001790 LED712 0601 001602 LED713 0601 001790 LED714 0601 001602 OSC100 2809 001294 OSC101 2806 001329 OSC300 2801 004285 ...

Page 18: ...53 R305 2007 000171 R306 2007 001319 R307 2007 007013 R308 2007 007001 R310 2007 000162 R311 2007 000162 R312 2007 000162 R313 2007 000162 R314 2007 000162 R315 2007 000162 Design LOC SEC CODE R317 2007 000140 R318 2007 007100 R319 2007 000139 R400 2007 000148 R401 2007 007100 R402 2007 001325 R403 2007 000171 R450 2007 000171 R500 2007 000162 R501 2007 000162 R507 2007 007573 R508 2007 000162 R50...

Page 19: ...7 U201 0801 002882 U300 0801 002237 U301 1204 002161 U302 1109 001316 U303 GH13 00020A U304 0801 002882 U306 0801 002882 U400 1205 002350 U500 2901 001246 U502 1203 003486 U603 1001 001253 U610 1202 001036 U701 1203 001917 U702 1203 003459 V600 1405 001082 V601 1405 001082 V602 1405 001082 V603 1405 001082 V604 1405 001082 V605 1405 001082 Design LOC SEC CODE V700 1405 001128 V702 1405 001128 V704...

Page 20: ...SAMSUNG Proprietary Contents may change without notice This Document can not be used without Samsung s authorization Electrical Parts List 4 6 ...

Page 21: ...D CP VREG Vcc_RF_LO FracN DIV 1 1 2 VREG 26MHz Vcc_REF 2 4V typ Vcc_SYN FE_SW1 FE_SW2 3W BUS CTL REG PWR EN GSM DCS PCS DIV QUAD PFD CP fTXIF 60 114MHz I OUT I OUT Q OUT Q OUT FESWON SYNON TXON GSM S W VRAMP TX ENABLE BAND SELECT DCS PCS IN VBAT REF_13M MQW510C869M FUJITSU EGSM RX SAW Filter FAR F5EB 942M50 B28CH IL 2 7dB max Ripple 1 7 dB max FUJITSU DCS RX SAW Filter FAR F6EB 1G8425B2BW IL 2 3dB...

Page 22: ... RAMP Charging Circuit Li Ion Battery OM6359 VIBRATOR SYSTEM CLOCK 13MHz MEMORY NAND 128Mb NOR 128Mb SRAM 64Mb RTC_CLOCK 32 768KHz LCD SIM CARD RECEIVER KEY RF INTERFACE VCC_CP Serial Data Interface I O Interface A D Interface BB INTERFACE MELODY IC 40 Poly SPEAKER BB Block Diagram of SGH X640 PMU CAMERA MV317 MIC VCC_RF_VCO VCC_RX_TX VCC_SYN VCC_TX_BURST VDD1 VDD2 VDD3 VDD_VIB MIC_BIAS VDD_KEY SP...

Page 23: ...SAMSUNG Proprietary Contents may change without notice This Document can not be used without Samsung s authorization 6 PCB Diagrams 6 1 1 Main PCB Top Diagram ...

Page 24: ...SAMSUNG Proprietary Contents may change without notice PCB Diagrams This Document can not be used without Samsung s authorization 6 2 2 Main PCB Bottom Diagram ...

Page 25: ...than 3 4V Power On does not work Change the Battery END No Yes C414 V_ISUP 2 7V Check the PMU related to V_ISUP No Yes Check the Clock at R401 32KHZ Resolder X400 No Yes C431 VDD1 H Check the VDD1 circuit No Yes C430 VDD2 C429 VDD3 2 8V Check the VDD2 VDD3 circuit No Yes Check for the clock at C126 13MHz Check the clock generation circuit related to U100 No Yes Check the initial operation Yes Yes ...

Page 26: ... VDD_KEY 4 5 6 G 7 8 G G 9 10 G AVDD_TEMP CN400 1 2 3 C430 C413 C407 C408 R403 C426 C403 TP401 C409 C422 C404 C402 VBAT C419 V_ISUP C428 R450 C431 VBAT C406 C411 C424 C415 MIC_BIAS C429 AVDD F4 VSS4 G4 VSS5 J3 VSS6 G5 K5 VSS7 VSS8 F6 G6 VSS9 D7 VSS15 VSS16 C7 D6 VSS17 VSS18 E5 D5 VSS19 VSS2 F5 VSS20 D4 C4 VSS21 VSS3 VIBVDD A3 VPROG H7 VSS1 E4 VSS10 G7 G8 VSS11 VSS12 F7 E6 VSS13 VSS14 E7 SIMSCP B1 ...

Page 27: ...bleshooting This Document can not be used without Samsung s authorization 7 3 2 Initial R200 RSTON H Initial Failure Check the circuit related to reset END No Yes Is U304 pin 4 6 memory CE OK Yes Yes No Check the U304 Check the circuit around LCD U304 Short or not solder Yes ...

Page 28: ...18 K4 K2 HA19 HA2 P3 GPIO8 GPIO9 N8 GPON1 L10 GPON2 N9 M4 HA1 HA10 N1 L2 HA11 HA12 L1 HA13 K9 GPIO10 K8 GPIO2 L8 GPIO3 M9 GPIO4 P7 L7 GPIO5 GPIO6 L9 N7 GPIO7 P6 CS_N0 N4 G5 CS_N1 M5 CS_N2 CS_N3 G3 B5 CTS0_N A11 EARN EARP B10 M12 GPIO0 GPIO1 BUZ E10 CCLK CDI D8 E9 CDO D9 CEN CKI P11 P13 CKI32I CKI32O P14 AUXSP A10 G10 AUXST P12 AVDD P10 AVSS BDIO E11 BIEN F10 F11 BIOCLK BOEN G11 B11 AUXADC3 F13 AUX...

Page 29: ...d without Samsung s authorization 7 5 3 Charging Part Check the C508 4 9V Abnormal charging part END No Yes U502 pin 5 H No Yes Check the C507 4 2V No Yes Check the the circuit related to V_EXT_CHARGE Resolder or replace U502 Check the circuit related to CHG_ON signal Yes U502 pin L Yes No Resolder or replace U502 ...

Page 30: ...ot be used without Samsung s authorization Flow Chart of Troubleshooting 7 6 Charging VDD2 _ACPR 7 _CHRG 3 8 _EN 9 GG 1011 GG 12 4 GND ITERM 1 PROG 5 6 VCC U502 2 BAT R509 V_EXT_CHARGE R511 C508 C507 R508 C505 ZD501 VBAT R507 R512 C506 CHARGER_OK CHG_ON MES_BATT END_OF_CHARGE ...

Page 31: ...used without Samsung s authorization 7 7 4 Sim Part CN400 pin 1 5 H Phone can t access SIM Card Check the sim charge pump Check the SIM Card END No Yes Yes Yes No Check the 32k OSC After Power ON Check SIMCLK Signal on CN400 pin3 in a few second Yes No Replace PBA After SIM card insert CN400 pin 2 H SIM_RST Yes ...

Page 32: ...ut Samsung s authorization Flow Chart of Troubleshooting 7 8 5 Microphone Part Check the connection from MIC Check the circuit from U200 to MIC Resolder MIC Resolder the R601 R605 R611 R612 R613 C604 and C610 END No Yes Yes Yes Yes No Check the MIC No Replace the MIC Microphone does not work ...

Page 33: ... of Troubleshooting This Document can not be used without Samsung s authorization 7 9 Microphone Close to microphone V601 R605 C613 R611 C611 C607 V600 C601 0 R613 MIC_BIAS R601 C600 C606 R612 0 C608 C626 C627 C602 MIC600 C604 C612 C610 R603 C609 MIC JTAG MIC_N MIC_P ...

Page 34: ... U300 pin 5 2 85V Speaker does not work Check the Clock signal at Pin 1 of U301 13MHz Check the clock generation circuit related to OSC100 and U301 END No Yes No Resolder or replace U300 U301 pin 17 18 1 8V When U301 operate Resolder U301 Yes No HDC700 pin 40 42 1 8V Check the circuit related to SPK_P SPK_N signal Yes No Is Speaker working No Yes Change the Speaker Yes Yes ...

Page 35: ...ST 28 IOVDD LED 2 19 MTR 5 NC PLLC 6 17 SPOUT1 SPOUT2 18 15 SPVDD SPVSS 16 EQ2 EQ3 14 33 G G 34 35 G G 36 HPOUT L MONO 10 11 HPOUT R 32 D1 25 D2 D3 24 23 D4 D5 22 D6 21 D7 20 EQ1 12 13 U301 A0 30 1 CLKI D0 27 26 C303 R303 2 NC 1 OUT 4 VCC 5 U300 GND 3 IN VDD2 VDD2 R306 C300 C307 C301 C305 C304 C302 R301 R308 C310 VDD2 R302 R307 HD 7 HD 6 HD 5 HD 4 HD 3 HD 2 HD 1 HD 0 HA 1 AMP_P AMP_N SPVDD MELODY_...

Page 36: ...used without Samsung s authorization Flow Chart of Troubleshooting 7 12 7 Key Data Input When one of the keys is pushed is it displayed on LCD Check the Dome sheet Key Pad END No Yes Yes Check Initial Operation When one of the keys is pushed KBIO signal is OK Replace the PBA No Yes ...

Page 37: ... 9 13 1 5V Resolder or replace U603 END No Yes Yes Receiver does not work SPK PAD 1 5V Cange LCD module No Yes Is Receiver working Replace the Receiver No Yes No Resolder or replace U603 Yes No Resolder EAR600 EAR600 pin 4 5 short Yes HDC700 pin 40 42 1 5V No Resolder HDC700 Yes Check the soldering of the speaker wire No Modify the speaker wire soldering Yes U603 pin 1 5 1 5 ...

Page 38: ...ng s authorization Flow Chart of Troubleshooting 7 14 9 LCD Part Is LCD Contrast set on high level in the Menu Set LCD Contrast on high level END No Yes Yes LCD does not work HDC700 pin 24 2 8V Check the R304 C308 No Yes HDC700 pin 19 L_WR 20 RS is OK Check the U303 No Yes Yes Replace the LCD Module ...

Page 39: ...ce Flow Chart of Troubleshooting This Document can not be used without Samsung s authorization 7 15 10 Key Back Light U701 pin 5 H Check the PMU related to VDD_KEY END No Yes Yes Key Backlight does not work U701 pin 2 3 H No Resolder or replace U701 Yes ...

Page 40: ...shooting 7 16 11 Camera part Camera function does not work Yes No Connect the camera module Check the Camera connector on LCD module Yes HDC700 pin 48 50 2 8V No Check LCD and HDC700 Yes OSC300 Pin 1 24MHz No Check OSC300 and R318 Yes HDC700 pin 24 2 8V Yes No Check the R304 C308 Is there another problem END Replace the camera module Yes ...

Page 41: ... input CH center freq Amp 50dBm Check U103 pin4 L pin8 L U103 pin5 65dBm F100 pin1 70dBm U100 pin6 7 8 9 1V U100 pin32 70dBm pin33 70dBm Check ANT Switch control circuit Resolder U103 Resolder F100 C104 L103 Resolder L100 L101 L102 Check U100 pin10 22 28 2 7V pin20 4 0V Check Resolder RF PSU Part Check Resolder U100 RF26MHz part R100 R101 R116 R117 R119 R121 1V Yes Yes Yes Yes Yes Yes Yes Yes No N...

Page 42: ...103 pin11 20dBm U102 pin6 20dBm OSC101 pin1 6dBm U102 pin48 3dBm Change or Resolder U100 Check ANT Switch control circuit Resolder L113 L114 C151 Resolder R123 U100 pin6 7 8 9 500mV Yes Check U102 VBATT pin42 43 OK Resolder or Change U102 or check PAM control signal Check VBATT Check U100 pin4 4 0V pin22 28 2 7V OK Check Resolder RF PSU Part No No No No No Yes No No Yes Yes Yes Yes Yes Yes Yes Yes...

Page 43: ...put CH center freq Amp 50dBm Check U103 pin4 L pin8 L U103 pin1 65dBm F102 pin1 70dBm U100 pin6 7 8 9 1V U100 pin38 70dBm pin39 70dBm Check ANT Switch control circuit Resoder U103 Resolder F102 C116 L107 Resolder C115 C117 L106 Check U100 pin10 22 28 2 7V pin20 4 0V Check Resolder RF PSU Part Check Resolder U100 RF26MHz part R100 R101 R116 R117 R119 R121 1V Yes Yes Yes Yes Yes Yes Yes Yes No No No...

Page 44: ...03 pin9 20dBm U102 pin31 20dBm OSC101 pin5 6dBm U102 pin37 3dBm Change or Resolder U100 Check ANT Switch control circuit Resolder L111 C147 Resolder R124 R125 R126 U103 pin6 7 8 9 500mV Yes Check U102 VBATT pin42 43 OK Resolder or Change U102 or check PAM control signal Check VBATT Check U100 pin4 4 0V pin22 28 2 7V Check Resolder RF PSU Part No No No No No No Yes No Yes Yes Yes Yes Yes Yes Yes Ye...

Page 45: ...6 C152 R125 C138 R104 C131 C119 R128 R116 C135 C143 L105 R129 C112 L104 C109 F102 G 25 G 1 IN OUT 3 OUT 4 G 25 G 1 IN OUT 3 4 OUT L107 F100 C104 R112 OSC100 2 GND 3 OUT 4 VCC VCON 1 C116 C108 C121 C122 C127 L109 C147 R102 L114 R121 C132 14 5 GSM_RX 11 GSM_TX PCS_RX 3 VC1 4 8 VC2 VC3 2 7 ANT DCS_RX 1 DCS PCS_TX 9 G 6 G 10 G 12 G 13 G U103 C145 C115 L106 C130 C146 C136 C149 R111 C148 R103 C151 C142 ...

Page 46: ...SAMSUNG Proprietary Contents may change without notice This Document can not be used without Samsung s authorization Flow Chart of Troubleshooting 7 22 ...

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