Samsung SGH-X620 Service Manual Download

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GSM TELEPHONE

SGH-X620

GSM TELEPHONE

CONTENTS

Specification

Circuit Description

Exploded Views and Parts List

Electrical Parts List

Block Diagrams

PCB Diagrams

Flow Chart of Troubleshooting

Summary of Contents for SGH-X620

Page 1: ...SM TELEPHONE SGH X620 GSM TELEPHONE CONTENTS 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 ...

Page 2: ... Ltd August 2005 Printed in Korea Code No GH68 08050A 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: ...930 1990 ARFCN range 1 124 512 885 512 810 Tx Rx spacing 45MHz 95MHz 80MHz Mod Bit rate Bit Period 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 Modulation 0 3GMSK 0 3GMSK 0 3GMSK MS Power 33dBm 5dBm 30dBm 0dBm 30dBm 0dBm Power Class 5pcl 19pcl 0pcl 15pcl 0pcl 15pcl Sensitivity 102dBm 100dBm 100dBm TDMA Mux...

Page 4: ... 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 10 10 4 dBm 11 8 4dBm 12 6 4 dBm 13 4 4 dBm 14 2 5 dBm 15 0 5 dBm 1 2 GSM TX power class TX Power control level PCS1900 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 ...

Page 5: ...NAs are followed by an IQ down mixer It consists of two mixers in parallel but driven by quadrature out of phase LO signals The In phase I and Quadrature phase Q IF signals are low pass filtered to provide protection from high frequency offset interferes The low IF I and Q signals are then fed into the channel filter The front end low IF I and Q outputs enter the integrated bandpass channel filter...

Page 6: ...rvisory functions including a reset generator an input voltage monitor and a temperature sensor support reliable system design These functions work together to ensure proper system behavior during start up or in the event of a fault condition low microprocessor voltage insufficient battery energy or excessive die temperature Backlight Brightness Modulator The Backlight Brightness Modulator BBM con...

Page 7: ...e linear charger is used for single cell lithium ion batteries If TA connected to phone DCVOLT enable charger IC and supply current to battery When fault condition caused CHG_ON signal level change low to high and charger IC stop charging process 2 2 7 Audio EARP_P and EARP_N from OM6359 are connected to the main speaker MIC_P and MIC_N are connected to the main MIC YMU762 is a synthesizer LSI for...

Page 8: ...er reset power clock unit DMA controller TIC Test Interface Controller peripheral bridge PPI SSI Synchronous Serial Interface ACC Asynchronous communications controllers timer ADC RTC Real Time Clock and keyboard interface KBIO 0 7 address lines of DSP core and HD 0 15 HA 1 26 address lines of ARM core and HD 0 15 data lines of ARM core are connected to memory and YMU762 NCSRAM NCSFLASH in the ARM...

Page 9: ...e 3 Exploded View and Parts List 3 1 This Document can not be used without Samsung s authorization 3 1 Exploded View QMW02 QFR01 QAU01 QKP01 QME01 QLC01 QCA02 QMP01 QCR05 QAN02 QCA01 QRE01 QCW01 QRF01 QIF01 QRF03 QCK01 QCR21 QVO01 QMO01 QMI03 QVK01 QBA01 ...

Page 10: ...3 5 BL 6001 001507 QFR01 MEC FRONT CASE SGH X620 EU S GH75 06379A QIF01 PMO IF COVER SGH X620 PC ELASTOMER D GH72 22325A QKP01 MEC KEYPAD SGH X620 EU BLK GH75 06380A QLC01 LCD SGHX620 LCD LTS166QQ F01 0 SGH X GH07 00705A QME01 UNIT METAL DOME SGH X620 SSM5017P800 GH59 02112A QMI03 RMO RUBBER MIC SGH X620 CR RUBBER P5 GH73 04169A QMO01 MOTOR DC SGHX620 JHV 10A1 C9S SGH X6 GH31 00179A QMP01 PBA MAIN...

Page 11: ...O GH68 07405A MANUAL USER SGH X620 XET ITALIAN ITA GH68 07612A CUSHION CASE 1 2_NEW SGH X620 PULP GH69 02994A BOX P SGHX620 EU SGH X620 SC300 S1 GH69 03067A ICT MIRROR SGH X620 STS P10 52 1 1 GH70 00404A PMO BATTER LOCKER SGH X620 PC D SIL GH72 21963A MPR BOHO VINYL C WIN B SGH X620 SP30 GH74 15524A MPR TAPE INSULATION PCB SGH X620 3M8 GH74 16995A MPR BOHO VINYL M WIN SGH X620 SP100 GH74 16997A MP...

Page 12: ... view and Part List 3 4 This Document can not be used without Samsung s authorization 3 3 Test Jig GH80 01909A 3 3 1 RF Test Cable GH39 00283A 3 3 2 Test Cable GH39 00217A 3 3 3 Serial Cable 3 3 4 Power Supply Cable 3 3 5 DATA CABLE GH39 00219A 3 3 6 TA GH44 00184G ...

Page 13: ...21 C CER CHIP 2203 005057 C122 C CER CHIP 2203 005138 C124 C FILM SMD PPS 2301 001213 C125 C CER CHIP 2203 000359 C126 C FILM SMD PPS 2301 001197 C127 C CER CHIP 2203 005482 C128 C CER CHIP 2203 005057 C129 C CER CHIP 2203 006053 C130 C CER CHIP 2203 000438 C131 C CER CHIP 2203 006190 C132 C CER CHIP 2203 000438 C133 C CER CHIP 2203 006190 C134 C CER CHIP 2203 000438 C135 C TA CHIP 2404 001239 C13...

Page 14: ...CER CHIP 2203 000854 C214 C CER CHIP 2203 006141 C215 C CER CHIP 2203 005482 C217 C CER CHIP 2203 006053 C218 C CER CHIP 2203 005482 C219 C CER CHIP 2203 005482 C220 C CER CHIP 2203 005061 C221 C CER CHIP 2203 005061 C222 C CER CHIP 2203 005061 C223 C CER CHIP 2203 005061 C224 C CER CHIP 2203 005061 C225 C CER CHIP 2203 000254 C226 C CER CHIP 2203 005061 C227 C CER CHIP 2203 005061 C228 C CER CHIP...

Page 15: ... CER CHIP 2203 006208 C338 C CER CHIP 2203 006208 C339 C CER CHIP 2203 006053 C340 C CER CHIP 2203 005482 C341 C TA CHIP 2404 001374 C342 C TA CHIP 2404 001381 C344 C CER CHIP 2203 006090 C345 C CER CHIP 2203 006201 C346 C CER CHIP 2203 006053 C347 C CER CHIP 2203 006201 C348 C CER CHIP 2203 006201 C349 C TA CHIP 2404 001225 C350 C CER CHIP 2203 006201 C351 C CER CHIP 2203 005482 C352 C CER CHIP 2...

Page 16: ...CER CHIP 2203 003054 C501 C CER CHIP 2203 005061 C502 C CER CHIP 2203 006141 C503 C TA CHIP 2404 001225 C504 C CER CHIP 2203 006141 C505 C CER CHIP 2203 000233 C506 C CER CHIP 2203 005482 C507 C CER CHIP 2203 000679 C508 C CER CHIP 2203 000725 C509 C CER CHIP 2203 005482 C510 C CER CHIP 2203 006141 C511 C CER CHIP 2203 005482 C512 C CER CHIP 2203 005482 C513 C CER CHIP 2203 000438 C514 C CER CHIP ...

Page 17: ...1405 001158 F502 FILTER SAW 1405 001158 F503 FILTER SAW 1405 001158 F504 FILTER EMI ESD 2901 001322 F505 FILTER EMI ESD 2901 001322 F506 FILTER EMI ESD 2901 001322 F507 FILTER EMI ESD 2901 001322 F508 FILTER EMI ESD 2901 001322 L104 INDUCTOR SMD 2703 002204 L107 INDUCTOR SMD 2703 002170 L109 INDUCTOR SMD 2703 002201 L112 INDUCTOR SMD 2703 002201 L113 INDUCTOR SMD 2703 002201 L115 INDUCTOR SMD 2703...

Page 18: ...R CHIP 2007 000171 R101 R CHIP 2007 000162 R102 R CHIP 2007 000162 R103 R CHIP 2007 000162 R104 R CHIP 2007 007148 R105 R CHIP 2007 000141 R106 R CHIP 2007 000140 R107 R CHIP 2007 001288 R108 R CHIP 2007 001308 R109 R CHIP 2007 001308 R110 R CHIP 2007 000566 R111 R CHIP 2007 001329 R112 R CHIP 2007 000144 R113 R CHIP 2007 001288 R114 R CHIP 2007 007311 R115 R CHIP 2007 000148 R116 R CHIP 2007 0013...

Page 19: ...8 R CHIP 2007 000162 R219 R CHIP 2007 000143 R220 R CHIP 2007 000141 R221 R CHIP 2007 000141 R222 R CHIP 2007 000162 R223 R CHIP 2007 000162 R224 R CHIP 2007 000162 R300 R CHIP 2007 000839 R301 R CHIP 2007 000162 R302 R CHIP 2007 007100 R305 R CHIP 2007 000148 R310 R CHIP 2007 000140 R311 R CHIP 2007 003001 R312 R CHIP 2007 000151 R313 R CHIP 2007 000157 R314 R CHIP 2007 007311 R315 R CHIP 2007 00...

Page 20: ...000162 R501 R CHIP 2007 000162 R503 R CHIP 2007 000143 R504 R CHIP 2007 000143 R507 R CHIP 2007 000162 R509 R CHIP 2007 000148 R510 R CHIP 2007 007014 R511 R CHIP 2007 007014 R512 R CHIP 2007 001313 R514 R CHIP 2007 000162 R515 R CHIP 2007 001325 R517 R CHIP 2007 007132 R518 R CHIP 2007 007308 R519 R CHIP 2007 007308 R520 R CHIP 2007 000775 R521 R CHIP 2007 001325 R522 R CHIP 2007 003001 R523 R CH...

Page 21: ...EMI ESD 2901 001246 U501 IC FM RADIO 1201 002238 U502 IC MELODY 1204 002161 U503 IC DEMODULATOR 1204 002398 U504 C CER CHIP 2203 000628 U505 C CER CHIP 2203 005061 U507 C CER CHIP 2203 000812 U510 IC CMOS LOGIC 1001 001306 U511 R CHIP 2007 000162 U512 IC CMOS LOGIC 0801 002237 V401 VARISTOR 1405 001121 V402 VARISTOR 1405 001121 V403 VARISTOR 1405 001121 V404 VARISTOR 1405 001121 V405 VARISTOR 1405...

Page 22: ...SAMSUNG Proprietary Contents may change without notice Electrical Parts List 4 10 This Document can not be used without Samsung s authorization ...

Page 23: ...EG Vcc_RF_LO FracN DIV 1 1 2 VREG 26MHz Vcc_REF 2 4V typ Vcc_SYN FESW1 FESW2 3W BUS CTL REG PWR EN GSM DCS PCS DIV QUAD PFD CP fTXIF 60 114MHz I OUT FESWON N A SYNON TXON GSM S W PMU PCF50601 HVS VDD1 1 35V min 2 95V max 150mA VBat 3 6V typ 3 0V min V_MODE RF1_VDD RF2_VDD RF1_VDDS RF2_VDDS VDD2 1 35V min 3 45V max 150mA VDD3 1 35V min 3 45V max 100mA AVDD 1 35V min 2 65V max 100mA VCC_RX_TX 2 7V 1...

Page 24: ...C CAT32 LED DRIVER SWITCH STG3699 SPK LD 0 15 SCL SDA IT_PMU REF_ON 32K AMP_P AMP_N MIC_P MIC_N VSYNC PCLK MCLK C_SDA C_SCL HSYNC YD 0 15 EAR_MIC_N EAR_MIC_P LINE_OUT EAR_N EAR_P LCD_CS RS L_RD L_WR HA 1 2 HD 0 15 HD 0 15 HA 1 26 Li Ion Battery Standard IRDA EAR JACK HEADSET SDRAM 64Mbit NOR FLASH 128Mbit INTEL MEMORY LDO Memory power LDO2 MV3018 power DUAL LDO Camera power PCF50601 PMU VDD1 VDD2 ...

Page 25: ...SAMSUNG Proprietary Contents may change without notice 6 PCB Diagrams 6 1 This Document can not be used without Samsung s authorization 6 1 PCB Top Diagram ...

Page 26: ...SAMSUNG Proprietary Contents may change without notice PCB Diagrams 6 2 This Document can not be used without Samsung s authorization 6 2 PCB Bottom Diagram ...

Page 27: ... than 3 4V Power On does not work Change the Battery END No Yes C314 V_ISUP 2 7V Check the PMU related to V_ISUP No Yes Check the Clock at R302 32KHZ Resolder X300 No Yes C339 VDD1 H Check the VDD1 circuit No Yes C338 VDD2 C337 VDD3 2 85V Check the VDD2 VDD3 circuit No Yes Check for the clock at C142 13MHz Check the clock generation circuit related to U101 No Yes Check the initial operation Yes Ye...

Page 28: ...303 V_ISUP C317 K5 VSS7 VSS8 F6 G6 VSS9 C315 D5 VSS19 VSS2 F5 VSS20 D4C4 VSS21 VSS3 F4 VSS4 G4 VSS5 J3 VSS6 G5 G8 VSS11 VSS12 F7E6 VSS13 VSS14 E7D7 VSS15 VSS16 C7D6 VSS17 VSS18 E5 J5 VBACK VBAT K4 VCC C2 B3 VIBVBAT VIBVDD A3 VPROG H7 VSS1 E4 VSS10 G7 C6 SIMGND A2 B8 SIMIO SIMSCN A1 SIMSCP B1 SIMVBAT B2 D10 SLPMOD TM H5 RF2VDDS J10 RFVBAT G9 C1 RST D9 RSTO SCL E3 SDA F2 E9 SEL12RB SEL3RB H4 SIMCLK ...

Page 29: ...ubleshooting This Document can not be used without Samsung s authorization 7 3 7 2 Initial R205 RSTON H Initial Failure Check the circuit related to reset END No Yes Is U203 Pin memory CE OK Yes Yes No Check the U203 Check the circuit around LCD U203 Short or not solder Yes ...

Page 30: ...3 L6 J7 HA24 HA25 J6 HA11 L2 L1 HA12 HA13 M2 J2 HA14 HA15 J5 K3 HA16 HA17 J4 K4 HA18 L9 GPIO6 GPIO7 N7 P6 GPIO8 N8 GPIO9 L10 GPON1 N9 GPON2 HA1 M4 N1 HA10 B10 EARP GPIO0 M12 GPIO1 K9 GPIO10 K8 L8 GPIO2 M9 GPIO3 P7 GPIO4 GPIO5 L7 CKI32I P13 P14 CKI32O N4 CS_N0 G5 CS_N1 CS_N2 M5 G3 CS_N3 B5 CTS0_N EARN A11 BIOCLK F11 G11 BOEN B11 BUZ CCLK E10 D8 CDI CDO E9 CEN D9 P11 CKI AUXMICP B14 AUXON K14 A10 AU...

Page 31: ...SAMSUNG Proprietary Contents may change without notice Flow Chart of Troubleshooting This Document can not be used without Samsung s authorization 7 5 ...

Page 32: ...low Chart of Troubleshooting 7 6 7 3 Charging Part Check the U303 pin 1 4 9V Abnormal charging part END No Yes U303 pin 7 H No Yes Check the U303 pin8 4 2V No Yes Check the the circuit related to DCVOLT Resolder or replace U303 Check the circuit related to CHG_ON signal Yes U303 pin 4 L Yes No Resolder or replace U303 ...

Page 33: ...hart of Troubleshooting This Document can not be used without Samsung s authorization 7 7 Charging CHARGER IC R313 ZD301 C341 C342 2 _PPR 8 BAT GND 5 9 GND 6 IMIN IREF 7 VIN 1 3 _CHG 4 _EN U303 R314 V_EXT_CHARGE R316 VDD2 C340 VBAT CHG_ON CHARGER_OK END_OF_CHARGE ...

Page 34: ...ation Flow Chart of Troubleshooting 7 8 7 4 Sim Part CN300 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 CN300 pin3 in a few second Yes No Replace PBA After SIM card insert CN300 pin 2 H SIM_RST Yes ...

Page 35: ...SAMSUNG Proprietary Contents may change without notice Flow Chart of Troubleshooting This Document can not be used without Samsung s authorization 7 9 ...

Page 36: ...out Samsung s authorization Flow Chart of Troubleshooting 7 10 7 5 Microphone Part Check the connection from MIC Check the circuit from U202 to MIC Resolder MIC Resolder the R416 R417 R419 R420 C427 and U505 END No Yes Yes Yes Yes No Check the MIC No Replace the MIC Microphone does not work ...

Page 37: ...w Chart of Troubleshooting This Document can not be used without Samsung s authorization 7 11 Microphone MIC MODULE Close to microphone C433 MIC_BIAS R417 ZD400 C432 C424 MIC400 U504 C425 C426 R419 C427 C409 C428 R420 U505 R418 C429 U508 ZD405 R416 MIC_N MIC_P ...

Page 38: ...512 pin 5 2 85V Speaker does not work Check the Clock signal at pin1 CLKI of U502 13MHz Check the clock generation circuit related to OSC101 and U502 END No Yes No Resolder or replace U512 C514 C515 Around U502 1 8V When U502 operate Resolder U502 Yes No is Speaker Contact in proper position Check the speaker Contact Yes No Is Speaker working No Yes Change the Speaker Yes Yes ...

Page 39: ...C508 VBAT NC 4 OUT VCC 5 U512 3 GND 2 IN 1 C518 C510 8 29 CS 3 IRQ 31 RD 4 RST WR 28 5 6 PLLC 17 SPOUT1 18 SPOUT2 SPVDD 15 16 SPVSS VDD 7 VREF 9 VSS 34 35 G G 36 10 HPOUT L MONO HPOUT R 11 32 IOVDD 2 LED MTR 19 NC 23 22 D5 D6 21 20 D7 12 EQ1 EQ2 13 14 EQ3 33 G G A0 30 CLKI 1 27 D0 D1 26 D2 25 24 D3 D4 U502 R510 C512 R512 C515 R511 C513 MELODY_RESET MEL_13M AMP_N AMP_P M_INT LINE_OUT HWR_N HA 1 MEL...

Page 40: ...d without Samsung s authorization Flow Chart of Troubleshooting 7 14 7 7 Key Data Input When one of the keys is pushed is it displayed on LCD Check the Dome sheet Key rubber END No Yes Yes Check Initial Operation When one of the keys is pushed KBIO signal is OK Replace the PBA No Yes ...

Page 41: ...eshooting This Document can not be used without Samsung s authorization 7 15 7 8 Receiver Part U510 pin2 L during call established Ceck U510 END No Yes Yes Receiver does not work Is Receiver working Replace the Receiver No Yes No Resolder or replace U510 Yes U510 pin 8 12 1 5 ...

Page 42: ... authorization Flow Chart of Troubleshooting 7 16 7 9 LCD Part for Color Main Is LCD Contrast set on high level in the Menu Set LCD Contrast on high level END No Yes Yes LCD does not work LCD500 pin 1 2 2 8V Resolder LCD module No Yes F504 pin 2 3 4 is OK Check the U200 No Yes Yes Replace the LCD Module ...

Page 43: ...SAMSUNG Proprietary Contents may change without notice Flow Chart of Troubleshooting This Document can not be used without Samsung s authorization 7 17 ...

Page 44: ...ts may change without notice This Document can not be used without Samsung s authorization Flow Chart of Troubleshooting 7 18 7 10 Key Back Light C336 H Check the PMU related to VDD_KEY END No Yes Key Backlight does not work Yes ...

Page 45: ...hout Samsung s authorization 7 19 7 11 Camera part Reconnect the camera module END No Ye s Camera function does not work Yes Check the Camera connector on PCB CN501 pin4 pin6 2 8V R202 26MHz is there another problem Yes Resolder U200 No Check U201 pin2 pin4 related to 26MHz and R202 No Yes Replace the camera module Yes ...

Page 46: ...6 7 8 9 F503 C503 L501 CVDD2V8 3 3 4 4 5 5 6 6 7 7 8 8 9 9 NC 25 26 NC 18 18 19 19 2 2 20 20 21 21 22 22 23 23 24 24 10 10 11 11 12 12 13 13 14 14 15 15 16 16 17 17 CN501 1 1 4 5 6 7 8 9 F501 1 10 23 R503 U511 CVDD2V8 CVDD1V8 F502 1 10 2 3 4 567 8 9 8 9 F500 1 10 2 3 4 56 7 CVDD2V8 C502 C504 R507 PCLK YD 0 YD 1 YD 2 YD 3 HSYNC VSYNC CAMERA_RESET CAMERA_PD MCLK YD 4 YD 5 YD 6 YD 7 C_SCL C_SDA ...

Page 47: ...cument can not be used without Samsung s authorization 7 21 7 12 FM Radio part Reconnect the Earphone or change the Earphone END No Ye s FM Radio function does not work Yes Check if Earphone is connected Check the R522 2 8V U503 TP507 H Replace U503 Yes Resolder U503 No Check U202 pinF4 No Yes ...

Page 48: ...D3 R523 TMUTE G7 INTX VAFL F6 INTCON1 F7 DGND G1 FREQIN G2 TIFCENTER G3 NC G4 MPXOUT G5 VAFR G6 CD3 D6 DGND D7 VDD E1 VCC E6 INTCON2 E7 CD2 F1 XTAL F2 AGND F4 CPOUT B4 NC B6 VREFDIG B7 DATA C1 RFIN2 C2 RFGND C7 DGND D1 RFIN1 D2 A1 A2 LO1 A3 LO2 A4 CD1 A5 SWPORT A6 BUSENABLE A7 CLOCK CAGC B1 B2 U503 1 NC 2 NC LOOPSW C534 VDD2 R520 C545 C546 C538 TP501 AVDD C530 C529 C526 C524 C527 TP504 R552 C528 C...

Page 49: ...SAMSUNG Proprietary Contents may change without notice Flow Chart of Troubleshooting This Document can not be used without Samsung s authorization 7 23 ...

Page 50: ... END No Yes RX ON RF input CH center freq Amp 50dBm Check U100 pin10 L pin12 L pin9 U100 pin5 6 65dBm U101 pin32 70dBm pin33 70dBm U101 pin6 7 8 9 1V Check ANT Switch control circuit Resolder U100 Resolder C107 C108 L104 Check U101 pin10 22 28 2 7V pin20 4 0V Check Resolder RF PSU Part Check Resolder U101 RF26MHz part R104 R105 R129 R130 R131 R132 1V Yes Yes Yes Yes Yes Yes Yes No No No No No Chec...

Page 51: ...SAMSUNG Proprietary Contents may change without notice Flow Chart of Troubleshooting This Document can not be used without Samsung s authorization 7 25 ...

Page 52: ...0 pin1 6Bm U101 Pin6 7 8 9 500mV Resolder CN100 C105 Check U100 pin10 H pin12 L pin9 L Resolder C115 C123 L115 Check U101 pin4 4 0V pin22 28 2 7V Change or Resolder U100 Check ANT Switch control circuit Check Resolder RF PSU part Resolder U101 or check Txcpo R127 Yes No Yes Yes Yes Yes Yes Yes No No No No No No No Check U102 VBATT pin42 43 OK Resolder or change U102 or check PAM control signal Che...

Page 53: ...p 50dBm U100 Pin8 65dBm U100 pin1 2 65dBm U101Pin38 70dBm Pin39 70dBm U101 pin6 7 8 9 1V R129 R130 R131 R132 1V Check U202 END Resolder CN100 C105 Check U100 pin10 L pin12 L pin9 Check ANT Switch control circuit Resolder U100 No Yes Resolder C111 C112 L107 Check U101 pin22 28 2 7V pin4 4 0V Check Resolder RF PSU Part Check Resolder U101 RF26MHz part R104 R105 Yes Yes Yes Yes Yes Yes No No No No No...

Page 54: ...SAMSUNG Proprietary Contents may change without notice This Document can not be used without Samsung s authorization Flow Chart of Troubleshooting 7 28 ...

Page 55: ...SAMSUNG Proprietary Contents may change without notice Flow Chart of Troubleshooting This Document can not be used without Samsung s authorization 7 29 ...

Page 56: ...er U100 Check U100 pin10 L pin12 H pin9 L Yes Resolder CN100 C105 END Check U202 U101 Pin6 7 8 9 500mV OSC100 pin5 6Bm U102 Pin37 3dBm U102 Pin31 20dBm U100 Pin13 20dBm U100 Pin8 20dBm Resolder U101 or check Txcpo R127 Check Resolder RF PSU part Check U101 pin4 4 0V pin22 28 2 7V Resolder R113 R116 R117 No Yes Yes Yes Check U102 VBATT pin42 43 OK Resolder or change U102 or check PAM control signal...

Page 57: ...SAMSUNG Proprietary Contents may change without notice Flow Chart of Troubleshooting This Document can not be used without Samsung s authorization 7 31 ...

Page 58: ...Amp 50dBm Check ANT Switch control circuit Change or Resolder U100 Check U100 pin10 L pin12 L pin9 H Resolder CN100 C105 END Check U202 R129 R130 R131 R132 1V U101 Pin 6 7 8 9 1V U101 Pin35 36 70dBm U100 Pin3 4 65dBm U100 Pin8 65dBm Check Resolder U101 RF 26MHz part R104 R105 Check Resolder RF PSU part Check U101 pin4 4 0V pin22 28 2 7V Resolder L120 L121 L106 Yes No Yes Yes Yes Yes No No No No Ye...

Page 59: ...SAMSUNG Proprietary Contents may change without notice Flow Chart of Troubleshooting This Document can not be used without Samsung s authorization 7 33 ...

Page 60: ...101 pin4 4 0V pin22 28 2 7V Resolder R113 R116 R117 Check VBATT Check U102 VBATT pin42 43 OK Resolder or change U102 or check PAM control signal Resolder C159 L119 Check ANT Switch control circuit Change or Resolder U100 Check U100 pin10 L pin12 H pin9 L Yes Resolder CN100 C105 END Check U202 U101 Pin6 7 8 9 500mV OSC100 pin5 6Bm U102 Pin37 3dBm U102 Pin31 20dBm U100 Pin13 20dBm U100 Pin8 20dBm No...

Page 61: ...SAMSUNG Proprietary Contents may change without notice Flow Chart of Troubleshooting This Document can not be used without Samsung s authorization 7 35 ...

Page 62: ...TXCPVCC TXON 5 TXRFI 1 15 16 REFVCC 21 RFCPO RFCPVCC 20 RFGND1 34 RFGND2 37 28 RFLOVCC 26 RFTUNE 31 RFVCC RFVCOVCC 25 23 RXON 33 IA 6 IB 71 0 IFVCC NC1 45 46 NC2 PCSIA 35 PCSIB 36 QA 89 QB 14 REFGND REFIN 2 EXTRES 29 FESW1 FESW2 30 FESWON 40 GND1 41 42 GND2 GND3 43 44 GND4 GNDTUNE 27 GSMIA 32 GSMIB CAFCSUP 12 CLK 18 CLKFDBX 13 CLKOUT 11 17 DATA DCSIA 38 DCSIB 39 19 EN C138 U101 C108 C151 4 E2 R104...

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