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Samsung SGH-X400, Service Manual

The Samsung SGH-X400 User Manual is available for free download at manualshive.com, ensuring you have the necessary guidance to maximize your device's features. This comprehensive manual provides step-by-step instructions, troubleshooting tips, and valuable insights, allowing you to make the most of your Samsung SGH-X400. Get it now!

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SAMSUNG Proprietary-Contents may change without notice

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6. SGH-X400 PCB Diagrams

This Document can not be used without Samsung's authorization

1. Main PCB Top Diagram

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Summary of Contents for SGH-X400

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

Page 2: ...24 975 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 19pcl 5pcl 19pcl 0pcl ...

Page 3: ...15 13 3 dBm 16 11 5 dBm 17 9 5 dBm 18 7 5 dBm 19 5 5 dBm TX Power control level DCS1800 0 30 2 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 TX Power control level PCS1900 0 30 2 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...

Page 4: ...s may change without notice 2 SGH X400 Exploded View and its Parts list 2 1 This Document can not be used without Samsung s authorization 1 Cellular phone Exploded View 1 2 3 4 5 7 8 9 10 6 11 12 13 14 15 16 17 18 19 21 22 20 23 ...

Page 5: ... 6 MAIN LCD GH07 00247A 7 FOLDER LOWER GH75 02635B 8 MAIN WINDOW LCD GH72 07620A 9 SCREW 6001 001155 10 HOLE SHEET A GH74 04896B HOLE SHEET B GH74 04897B 11 FRONT COVER GH75 02633B 12 SIDE KEY GH75 02632A 13 KEYPAD GH75 03162A 14 MAIN PBA GH92 01422A 15 DOME SHEET GH59 00745A 16 IF COVER GH73 01688B 17 MIC GH30 00015A 18 ANTENNA GH42 00285A 19 REAR COVER GH75 02634B 20 SCREW 6001 001478 21 SCREW C...

Page 6: ...e SGH X400 Exploded view and its Part list 2 3 This Document can not be used without Samsung s authorization 3 Test Jig GH80 00865A 3 1 RF Test Cable GH39 00090A 3 2 Test Cable GH00 00127A 3 3 Serial Cable 3 4 Power Supply Cable 3 5 DATA CABLE GH39 00159A ...

Page 7: ... C1063 2404 001268 C107 2203 005482 C108 2203 001652 C109 2203 001652 C110 2203 000438 C1101 2203 000679 C1102 2203 000995 C1103 2203 001405 C1104 2404 001105 C1105 2203 000885 C1106 Design LOC SEC Code 2203 005512 C1107 2203 000254 C1108 2203 005065 C1109 2203 006053 C111 2203 001405 C1110 2203 005509 C1111 2203 001405 C1112 2203 001405 C1113 2203 005065 C1114 2203 005480 C1115 2203 005481 C1116 ...

Page 8: ...6 C413 2203 000438 C416 2203 005061 C417 2404 001151 C420 2404 001151 C421 2203 005061 C422 2203 005065 C423 2203 000438 C425 2203 000438 C426 2203 005682 C430 2203 005682 C431 Design LOC SEC Code 2203 005682 C432 2203 005682 C433 2203 005682 C434 2203 005682 C435 2203 005682 C436 2203 005682 C437 2203 000812 C441 2203 000940 C450 2203 005061 C501 2203 005061 C502 2203 005061 C503 2203 000254 C504...

Page 9: ...07 2703 001794 L1101 2703 002102 L1102 2703 002102 L1103 2703 001235 L401 2703 001235 L402 2703 001235 L403 2703 001235 L490 2703 001751 L901 0601 001819 LED201 Design LOC SEC Code 0601 001819 LED202 0601 001790 LED203 0601 001790 LED204 0601 001790 LED205 0601 001819 LED206 0601 001790 LED207 0601 001819 LED208 0601 001819 LED209 0601 001819 LED210 0601 001790 LED211 0601 001790 LED212 0601 00179...

Page 10: ... 008587 R220 2007 008587 R221 2007 008587 R222 2007 008587 R223 2007 008587 R224 2007 008587 R225 2007 008587 R226 2007 008587 R227 2007 000157 R301 2007 000157 R302 2007 000157 R303 Design LOC SEC Code 2007 000140 R304 2007 000140 R305 2007 000140 R306 2007 000140 R307 2007 000140 R308 2007 000140 R309 2007 000140 R310 2007 000140 R312 2007 000140 R313 2007 003001 R401 2007 000162 R402 2007 00300...

Page 11: ...001313 R803 2007 000138 R804 1201 001889 U1001 GH71 01052A U1002 1203 002127 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 Design LOC SEC Code 0504 001042 U702 0504 001042 U703 0504 001042 U704 1205 002185 U901 1205 002268 U902 1209 0...

Page 12: ...wer On does not work Check the Voltage more than 3 3V Download again Charge the Battery Check the pin 11 of U102 is more than 2 8V Check U102 and C117 U102 pin 39 33 2 8V Check U102 and C116 Check the clock signal at pin3 of OSC801 Freq 13MHz Vrms 300mV Vpp is around 900mVpp Check the clock generation circuit related to OSC801 Check the initial operation END No Yes Yes Yes Yes Yes Yes No No No No ...

Page 13: ...s authorization 2 Initial Check the signal at the pin 19 of U102 is High when the phone is boot on Initialization Failure Check U102 END No Yes Check the pin 26 of U102 is High Yes Check the U701 Check the pin 4 of OSC801 is around 2 8V Check the soldered status of OSC801 R801 U102 Yes No Yes Check LCD connector CN201 and resolder bridge Yes No ...

Page 14: ...of CN101 voltage 3V Phone can t access SIM card Check the SIM connector s CN101 connection to SIM card Check the circuit related to U102 Resolder or change CN101 Check the circuit around CN101 input circuitry END No Yes Yes Yes Yes No Check the related circuit of CN101 No Check the circuit around U601 output and vlotage supply circuitry Yes Check the related circuit of U601 and U102 No ...

Page 15: ... the pin 17 18 of CN300 is TA_VEXT 4 Abnormal charging part Check the pin 5 of Q102 is High Replace TA Check CN300 Check the Q102 Check the Q102 END No Yes Yes Yes Yes No No Check the pin 3 of Q102 is Low Check the pin 5 of U101 is 3 2 4 2V Check the U101 No Yes Check the pin 5 1 5V 1V during charging and around 200mV full charging No Check the U101 or Resolder or change R102 Yes ...

Page 16: ...G_PW M 55 13 RTC_ALM N SCLK 17 SDI 15 SDO 16 SIM_CLK 50 SIM_IO 28 GNDQ INTRQ 14 7 LED1_DRV 8 LED2_DRV PSW1_BUF 20 21 PWR_KEEP PWR_SW1N 46 47 PWR_SW 2 RESETN EN_5A 26 EN_5B 27 57 GND 58 GND GND 59 60 GNDG GNDD1 6 45 ADC_AUX2 56 ADC_TRI G 43 BTEM P 29 CREF 18 CSN 22 EN_3 EN_4 0 23 24 EN_4 1 EN_5 25 U102 ADC_AUX1 44 10K 1 R102 1 2K R110 DRIVE 6 GND 2 1 ISENSE PROG 4 3 VCC 5 VSENSE VRTC U101 4 R103 47...

Page 17: ...of Troubleshooting This Document can not be used without Samsung s authorization C802 100PF C803 100PF 1 330 R803 OSC801 2 GND 3 OUT VCC 4 VT VOS C 10 R801 C805 10NF C1063 10NF 100 C806 10NF 10NF C804 R804 100PF C801 R802 2K AFC CLK13M_RF CLK13M_YM U 13MHZ_BB CLK13M_M C CLK13M_TR ...

Page 18: ... 5 C14 A16 XCP_A10 XCP_A11 F14 XCP_A12 G14 G13 XCP_A13 XCP_A14 G17 J12 XCP_A15 K12 XCP_A16 XCP_A17 K13 K14 XAG0 XAG1 A11 XAG2 E11 D11 XAG3 XBSWN B7 XCPTSTSTOP_CKO M12 B13 XCP_A0_BEO N F11 XCP_A 1 D16 VSS H11 J7 VSS K6 VSS E10 VSSA E15 VSS_DPL L X1RTC A7 D10 X2RTC B11 L8 VSS J11 VSS VSS L9 A3 VSS F6 VSS VSS G9 G10 VSS VSS H7 E17 VDDE VDD_DPL L G16 VRT C D8 VSS A2 VSS K7 VSS L6 L10 VSS VSS M7 VDDE V...

Page 19: ...without Samsung s authorization 5 Microphone Part Check the reference voltage on mic path C410 2 0V Microphone does not work Resolder microphone END No Yes Yes Yes Yes Is microphone ok No Check U701 check the soldered status of microphone Check the pin 42 of U102 is 2 8V Resolder or change R413 C420 R412 R411 R408 C410 No No Yes ...

Page 20: ...ment can not be used without Samsung s authorization 6 Speaker Part Check the connection from CN201 to LCD module Speaker does not work Check the PIN 4 and PIN 8 of U401 High Check the circuit related to U401 Check U601 Is speaker ok Check U701 END No Yes Yes Yes Yes No No Is speaker ok Change Speaker Yes No ...

Page 21: ...OVL N6 RWN OCTL10 A9 E9 OCTL11 OCTL2 B5 B6 OCTL3 OCTL4 B7 D5 OCTL5 OCTL6 A6 GNDD K2 IO K7 MC A13 MICIN B12 MICOUT 1 NC NC 2 OCTL0 B4 A5 OCTL1 F5 G2 DB7 DB8 F2 E2 DB9 DINTR L4 GNDA E11 K11 GNDB GNDC F10 L10 E1 E4 DB13 DB14 C2 B1 DB15 DB2 J5 J1 DB3 DB4 H3 G3 DB5 DB6 DAICK DAIDI B9 DAIDO B8 DAIRN D10 DB0 J2 H2 DB1 DB10 D2 D4 DB11 DB12 G12 AOUTAN G13 AOUTAP F13 AOUTBN E14 D13 AOUTBP AUXIN A14 AUXOUT B...

Page 22: ... R403 12 C418 NC 33PF NPO 0603 C436 C437 560 5 R434 R433 560 5 560 5 560 5 R432 R431 C434 C435 C441 33PF 3 3K R410 56K 18K R417 R407 R411 10K R415 56K IN 2 NC1 5 NC2 7 2 NO 1 10 NO 2V 1 10K R421 COM1 3 COM2 9 GND 6 4 IN 1 8 28 U401 16 SPVSS VDD 7 VREF 9 8 VSS 29 CS IRQ 3 31 RD 4 RST W R IOVDD 2 LED MTR 19 NC 56 PLLC SPOUT1 17 18 SPOUT2 SPVDD 15 22 D5 D6 21 20 D7 12 EQ1 EQ2 13 14 EQ3 10 HPOUT L MON...

Page 23: ... 13MHz Check U1103 and the relating parts Check the 0 5 2V DC at the anodes of the D1101 D1102 Check the Audio signal waveform at the C1111 Check the amplified Audio signal waveform at the Pin1 of U1102 END No Yes Yes Yes Yes Yes No Check the headset Check OSC1101 and the relating parts No Check the connections of the relating parts Check the pin18 of U1101 is 1 0 1 5V Yes No Check the connections...

Page 24: ...F C1118 C1108 47NF C1117 39N F 10N F C1115 33NF C1107 22N F C1113 L1101 120nH C1101 27P F 1NF VDIG 7 VREF 26 XTAL1 16 XTAL2 17 VRADI O C1102 27 TIFCENTER TMUT E 24 VAFL 22 VAFR 23 34 VCC 5 VCCVCO 3 VCOTANK1 4 VCOTANK2 36 RFGND RFIN1 35 37 RFIN2 9 SCL SDA 8 SRITE READ 11 SWPORT1 14 15 SWPORT2 N C 30 N C N C 31 N C 40 45 N C 46 N C PHASEDET 18 19 PILDET IGAIN 32 28 LIMDEC1 29 LIMDEC2 39 LOOPSW MPXOU...

Page 25: ...N1001 resolder or change F1001 resolder or change L1003 C1005 C1006 resolder or change U102 pin33 C111 check or resolder U903 CHECK pin 7 13MHz Vp p 860mV OSC801 CHECK pin4 clean 3V U903 change or resolder U902 CHECK pin 14 23 26 32 clean 2 8V C1063 R804 resolder OSC801 change or resolder U102 pin39 C112 check or resolder U902 pin3 4 Vp p 240mV U901 CHECK pin6 20 2 8V U901 resolder or change U902 ...

Page 26: ...Bm YES YES U1001 change or resolder NO U902 pin14 23 26 32 2 8V U102 pin39 C112 change or resolder YES U902 pin9 10 12 13 20dBm U902 pin5 6 7 8 1 7V YES U701 change NO NO U1001 change or resolder YES U903pin5 25 28 3V NO U102 pin33 C111 change or resolder NO U903 pin 7 13MHz Vp p 950mV YES U903 pin9 10 11 1213 3V YES YES OSC801 pin 3 13MHz Vp p 950mV OSC801 change or resolder U701 check or change ...

Page 27: ...01 resolder or change F1001 resolder or change L1003 C1005 C1006 resolder or change U102 pin33 C111 check or resolder U903 CHECK pin 7 13MHz Vp p 860mV OSC801 CHECK pin 4 clean 3V U903 change or resolder U902 CHECK pin 14 23 26 32 clean 2 8V C1063 R804 resolder 0SC801 change or resolder U102 pin39 C112 check or resolder U902 pin3 4 Vp p 240mV U901 CHECK pin6 20 2 8V U901 resolder or change U902 pi...

Page 28: ... U903 CHECK pin 25 28 3V C1012 C1013 L1006 resolder or change U102 pin33 C111 check or resolder U903 CHECK pin 7 13MHz Vp p 860mV U903 change or resolder U902 CHECK pin 14 23 26 32 clean 2 8V C1063 R804 resolder U102 pin39 C112 check or resolder U902 pin3 4 Vp p 240mV U901 CHECK pin6 20 2 8V U901 resolder or change U902 pin1 2 Vp p 250mV U902 resolder or change U901 pin 2 3 4 5 Vp p 100mV NO YES C...

Page 29: ...esolder NO U902 pin14 23 26 32 2 8V U102 pin39 C112 change or resolder YES U902 pin9 10 12 13 20dBm U902 pin5 6 7 8 1 7V YES U701 change NO NO U1001 change or resolder YES U903 pin 5 25 28 3V NO U102 pin33 C111 change or resolder NO U903 pin 7 13MHz Vp p 860mV YES U903 pin9 10 11 1213 3V YES YES U902 change or resolder OSC801 pin 3 13MHz Vp p 950mV OSC801 change or resolder U701 check or change OS...

Page 30: ...OVL N6 RWN OCTL10 A9 E9 OCTL11 OCTL2 B5 B6 OCTL3 OCTL4 B7 D5 OCTL5 OCTL6 A6 GNDD K2 IO K7 MC A13 MICIN B12 MICOUT 1 NC NC 2 OCTL0 B4 A5 OCTL1 F5 G2 DB7 DB8 F2 E2 DB9 DINTR L4 GNDA E11 K11 GNDB GNDC F10 L10 E1 E4 DB13 DB14 C2 B1 DB15 DB2 J5 J1 DB3 DB4 H3 G3 DB5 DB6 DAICK DAIDI B9 DAIDO B8 DAIRN D10 DB0 J2 H2 DB1 DB10 D2 D4 DB11 DB12 G12 AOUTAN G13 AOUTAP F13 AOUTBN E14 D13 AOUTBP AUXIN A14 AUXOUT B...

Page 31: ...TXIN 5 TXIP TXQN 8 7 TXQP 23 VDD1 31 PDNB RFIDN 20 19 RFIDP RFIGN 22 21 RFIGP RFIPN 18 RFIPP 17 RFLON 13 GND 35 GND 36 10 IFLON IFLOP 9 ION 1 2 IOP 29 L1 L2 28 CKP 4 DIAG1 16 15 DIAG2 11 GND 27 GND GND 30 GND 33 GND 34 6 VDDC 7 XIN 19 XOUT U902 CKN 3 4 RXIP 3 RXQN RXQP 2 17 SCLK SDI 18 15 SDO SENB 16 VDDA 20 21 GND GND 22 GND 23 GND 24 ION 12 11 IOP PDNB 14 5 RXIN 10 CKN CKP 9 1 GND 8 GND 13 GND U...

Page 32: ...UT 11 C1020 U1001 RF3110 33PF VPAC C1018 1NF R1007 300 C1012 R1009 100K 1 1 2PF L1008 L1001 1 2P F NC C1007 100PF L1007 12nH 3 4 OU T R1005 18 F1002 2 G G 5 IN 1 OU T 6 3V 33UF C1021 C1015 47PF C1010 100PF 33PF C1017 33UF 6 3V C1019 100PF C1004 8 2nH L100 4 C1014 0 75PF C1009 33PF 6 8nH L100 6 C1013 1 2PF U1002 1 1 2 2 300 R1008 300 R1003 180 18 R1001 VBAT R1002 C1016 33PF G 6 0 75PF C1005 CN100 1...

Page 33: ...SAMSUNG Proprietary Contents may change without notice 4 22 SGH X400 Flow Chart of Troubleshooting This Document can not be used without Samsung s authorization M ME EM MO O ...

Page 34: ... Antenna ASM RF FILTER SI4200 SI4133T π 2 RF PLL PGA SERIAL DATA INTERFACE GSM 890MHz 915MHz PCS 1850MHz 1910MHz PAM GSM 925MHz 960MHz PCS 1930MHz 1990MHz I Q CSP1093 TRIDENT DSP16000 ARM7TDMI UI SERIAL DATA CLK LE DCS 1805MHz 1880MHz L N A PGA A D C A D C IF PLL DCS 1710MHz 1785MHz D E T 100KHz CHANNEL FILTER D A C D A C PGA PGA R X TCVCXO 13 MHz C L K A F C T X I Q SI4201 ...

Page 35: ...O TX VCO IF VCO GPIO POWER DC DC CHARGER SIM X TAL 13MHz RS232 CSP1093 Audio Part LCD KEYBOARD SRAM 16M FLASH ROM 64M TXIP TXIN TXQP TXQN RXIP RXIN RXQP RXQN SERCK SERLE SERDA RFOVL TXP OCTL RF DIRVER TXI Q RX I Q TXP SERCK SERLE SERDA OCTL IO RWN AB 8 0 DB 15 0 INT1 IRQx PAx RSTB IO RWN AB 8 0 DB 15 0 INT1 IRQx PAx RSTB ARM JTAG ICE DAICK DAIRN DAIDO DAIDI DAI DSPJTAG JTAG GPRS ACC PPI Programmab...

Page 36: ... 5 3 This Document can not be used without Samsung s authorization TEA5767 Radio IC TRIDENT Audio AMP 13MHz I2C_DATA I2C_CLK SPK FM ANT EAR MIC Tuning System VCO AGC Mixer Resonance Amp Decoder I2C 3WIRE BUS Limiter Demodulator Soft Mute Matching Circuit 3 FM Radio Block Diagram ...

Page 37: ...06 C607 C608 C610 C611 C612 C613 C614 C615 C701 C704 C705 C706 C707 C708 C709 C710 C711 C712 C801 C802 C803 C804 C805 C806 C904 C906 C908 C909 C910 CN1001 CN101 CN201 CN300 CN401 D1101 D1102 F1001 F1002 G1 G2 G3 G4 G6 G7 L1001 L1002 L1003 L1004 L1005 L1006 L1007 L1008 L1101 L1102 L1103 L401 L403 L901 LED217 M101 MIC401 OSC1101 OSC601 OSC801 Q103 Q104 Q1101 Q401 R1001 R1002 R1003 R1004 R1005 R1006 ...

Page 38: ...2 C424 C425 C426 C439 C440 C603 C604 C609 C905 C911 CLEAR DOWN END_PWD F1 F2 F3 F4 F_WE_1 L402 L490 LED201 LED202 LED203 LED204 LED205 LED206 LED207 LED208 LED209 LED210 LED211 LED212 LED213 LED214 LED215 LED216 LED218 LED219 LED220 LED221 LEFT Q101 Q102 R102 R103 R104 R201 R218 R701 R704 R705 RIGHT SEND TCK_1 TDI_1 TDO_1 TMS_1 TRST_1 U101 U201 U202 U403 U702 U703 U704 UP ZD301 ZD303 ZD304 ZD305 Z...

Page 39: ...onics Co Ltd SEP 2003 Printed in Korea Code No GH68 03843A 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 ...

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