Samsung SGH-X490 Service Manual Download

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GSM TELEPHONE

SGH-X490

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-X490

Page 1: ...SM TELEPHONE SGH X490 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 December 2005 Printed in Korea Code No GH68 08926A 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: ...15 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 5dBm 33dBm 5dBm 30dBm 0dBm 30dBm 0dBm Power Class 5pcl 19pcl 5pcl 19pcl 0pcl 15pcl...

Page 4: ... 3 dBm 16 11 5 dBm 17 9 5dBm 18 7 5 dBm 19 5 5 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: ...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 Transceiver U101 The receiver front end which amplifies the GSM DCS PCS aerial signal converts the chosen channel down to a low IF signal of 100 kHz The first stages are sym...

Page 6: ...ter provides support for 1 8V 3 0VSIMs while a self resetting electronically fused switch supplies power to external accessories Ancillary support functions such as RTC module and High 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 co...

Page 7: ...closed to the OM6359 This uses the hall effect IC A321ELH SAMSUNG A magnet under main LCD enables A321ELH SAMSUNG 2 2 4 EMI ESD Filter This system uses the EMI ESD filter EMIF09 to protect noise from IF CONNECTOR part 2 2 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 s...

Page 8: ... and SRAM During reading process HRD_N is low and it enables reading process to flash memory and SRAM Reading or writing procedure is processed after HWR_N or HRD_N is enabled 2 2 9 OM6359 OM6359 is consisted of ARM core and DSP core It has 8x1Kword on chip program data RAM 55 Kwords on chip program ROM in the DSP It has 4K 32bits ROM and 2K 32bits RAM in the ARM core DSP is consisted of KBS JTAG ...

Page 9: ... Exploded View and Parts List 3 1 This Document can not be used without Samsung s authorization 3 1 Exploded View QIF01 QMI03 QFR01 QSC14 QMP01 QKP01 QVO01 QME01 QAN02 QRE01 QCR11 QRF03 QMI01 QBA01 QFU01 QSP01 QMO01 QLC01 QFL01 QMW02 QSC01 QCR53 QRF01 QVK01 ...

Page 10: ...471A QKP01 ㅤ MEC KEYPAD TMB WST GH75 08152A QLC01 ㅤ MEA LCD MODULE KIT X495 GH97 05095A QME01 ㅤ UNIT METAL DOME GH59 02046A QMI01 ㅤ MICROPHONE ASSY SGHX497 GH30 00198A QMO01 ㅤ MOTOR DC SGHZ130 GH31 00154D QMP01 ㅤ PBA MAIN SGHX490 GH92 02444A QMW02 ㅤ PCT WINDOW MAIN GH72 19918B QRF01 ㅤ MPR RF SHEET GH74 14435B QSC01 ㅤ MPR SCREW SHEET GH74 13610B QSC14 ㅤ MPR TAPE FRONT FPC GH74 08876A QSP01 ㅤ SPEAKE...

Page 11: ...03333A BOX P UNIT T MOBILE GH69 03459A PMO BATT LOCKER GH72 19954A PCT WINDOW SUB GH72 19964A RMO RUBBER TOP LCD A GH73 04923A RMO RUBBER TOP LCD B GH73 04924A MPR BOHO VINYL SUB S R GH74 03429B MPR BOHO VINYL REAR GH74 12905A MPR TAPE WINDOW SUB GH74 13223A MPR TAPE WINDOW MAIN GH74 13608A MPR BOHO VINYL SUB GH74 14432A MPR TAPE EL GH74 14881A MPR BOHO VINYL LCD CONN GH74 15350A MPR TAPE PBA EMI ...

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: ... 000359 SA C119 C CER CHIP 2203 000696 SA C120 C CER CHIP 2203 000836 SA C121 C CER CHIP 2203 001101 SA C122 C CER CHIP 2203 005482 SA C123 C CER CHIP 2203 005057 SA C124 C CER CHIP 2203 006053 SA C125 C CER CHIP 2203 000438 SA C126 C CER CHIP 2203 000233 SA C127 C TA CHIP 2404 001239 SA C128 C CER CHIP 2203 006141 SA C129 C CER CHIP 2203 000438 SA C130 C CER CHIP 2203 006190 SA C132 C CER CHIP 22...

Page 14: ...06423 SA C223 C CER CHIP 2203 005482 SA C224 C CER CHIP 2203 000438 SA C225 C CER CHIP 2203 005482 SA C300 C CER CHIP 2203 005482 SA C301 C CER CHIP 2203 006105 SA C302 C CER CHIP 2203 005482 SA C304 C TA CHIP 2404 001394 SA C305 C CER CHIP 2203 005482 SA C306 C CER CHIP 2203 005482 SA C307 C TA CHIP 2404 001374 SA C308 C CER CHIP 2203 006257 SA C309 C CER CHIP 2203 005482 SA C310 C CER CHIP 2203 ...

Page 15: ...82 SA C409 C CER CHIP 2203 005061 SA C410 C CER CHIP 2203 005736 SA C411 C CER CHIP 2203 000679 SA C412 C CER CHIP 2203 005482 SA C413 C CER CHIP 2203 000679 SA C415 C CER CHIP 2203 000489 SA C416 C CER CHIP 2203 000679 SA C418 C CER CHIP 2203 000278 SA C419 C CER CHIP 2203 006423 SA C420 C CER CHIP 2203 005736 SA C421 C CER CHIP 2203 000885 SA C422 C CER CHIP 2203 000254 SA C423 C CER CHIP 2203 0...

Page 16: ...CTOR SMD 2703 001726 SA L107 INDUCTOR SMD 2703 002308 SA L108 INDUCTOR SMD 2703 002700 SA L109 INDUCTOR SMD 2703 002308 SA L110 INDUCTOR SMD 2703 002308 SA L111 INDUCTOR SMD 2703 002199 SA L112 INDUCTOR SMD 2703 002176 SA L113 INDUCTOR SMD 2703 001727 SA L114 INDUCTOR SMD 2703 002176 SA L115 INDUCTOR SMD 2703 002203 SA L116 INDUCTOR SMD 2703 002368 SA L117 INDUCTOR SMD 2703 001708 SA L300 BEAD SMD...

Page 17: ...SA R119 R CHIP 2007 007699 SA R120 R CHIP 2007 001308 SA R121 R CHIP 2007 001308 SA R122 R CHIP 2007 000171 SA R123 R CHIP 2007 000171 SA R125 R CHIP 2007 008672 SA R126 R CHIP 2007 001308 SA R127 R CHIP 2007 000142 SA R128 R CHIP 2007 000148 SA R129 R CHIP 2007 000138 SA R130 R CHIP 2007 008213 SA R131 R CHIP 2007 008213 SA R132 R CHIP 2007 008213 SA R133 R CHIP 2007 008213 SA R134 R CHIP 2007 00...

Page 18: ...SA R400 R CHIP 2007 002796 SA R401 R CHIP 2007 000140 SA R402 R CHIP 2007 000148 SA R403 R CHIP 2007 008054 SA R404 R CHIP 2007 000140 SA R405 R CHIP 2007 008542 SA R406 R CHIP 2007 008055 SA R407 R CHIP 2007 002796 SA R408 R CHIP 2007 008055 SA R409 R CHIP 2007 007334 SA R410 R CHIP 2007 001313 SA R411 R CHIP 2007 008542 SA R412 R CHIP 2007 007483 SA R413 R CHIP 2007 007589 SA R414 R CHIP 2007 00...

Page 19: ...IP 2007 009084 SA R539 R CHIP 2007 009084 SA R540 R CHIP 2007 009084 SA R541 R CHIP 2007 009084 SA R542 R CHIP 2007 009084 SA R543 R CHIP 2007 009084 SA R544 R CHIP 2007 009084 SA R545 R CHIP 2007 009084 SA R546 R CHIP 2007 009084 SA R547 R CHIP 2007 000162 SA SW500 IC HALL EFFECT S W 1009 001010 SA TH200 THERMISTOR NTC 1404 001221 SA TH501 VARISTOR 1405 001093 SA TH502 VARISTOR 1405 001093 SA TH5...

Page 20: ...79 SA U511 IC BUS SWITCH 1205 002779 SA U512 IC BUS SWITCH 1205 002779 SA V401 DIODE TVS 0406 001201 SA V402 DIODE TVS 0406 001201 SA V501 VARISTOR 1405 001121 SA V502 VARISTOR 1405 001121 SA V504 VARISTOR 1405 001121 SA V505 VARISTOR 1405 001121 SA V506 VARISTOR 1405 001121 SA V507 VARISTOR 1405 001121 SA V509 VARISTOR 1405 001121 SA X300 CRYSTAL SMD 2801 004339 SA ZD300 DIODE ZENER 0403 001427 S...

Page 21: ...LK DATA DCS PCS S W OFFSET Mixer input power 16dBm max 22dBm min f compRF 26MHz Philips Transceiver UAA3536 Pins IA IB QA and QB V I Q 1 25V ty p 1 15V mi n 1 35Vmax Vmod 0 5V p p QUAD DIV PFD 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 60MHz I OUT FESWON SYNON TXON GSM S W PMU HV S VDD1 1 35V min 2 95V...

Page 22: ... Voltage Battery Temperature AFC RAMP Charging Circuit Li Ion Battery Standard OM6359 VIBRATOR SYSTEM CLOCK 13MHz RTC_CLOCK 32 768KHz KEY_BOARD RECEIVER MIC LCD RF INTERFACE VCC_RX_TX VCC_RF_VCO VCC_TX_BURST PMU VCC_SYN Serial Data Interface I O Interface A D Interface BB INTERFACE MELODY IC 40 Poly SPEAKER VDD1 VDD2 VDD3 VDD_VIB MIC_BIAS VCC_CP VDD_KEY VDD_AMP AVDD AVDD_TEMP SIM CARD BL_VDD ...

Page 23: ...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 24: ...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 25: ... than 3 4V Power On does not work Change the Battery END No Yes C315 V_ISUP 2 7V Check the PMU related to V_ISUP No Yes Check the Clock at R306 32KHZ Resolder X300 No Yes C340 VDD1 H Check the VDD1 circuit No Yes C339 VDD2 C338 VDD3 2 85V Check the VDD2 VDD3 circuit No Yes Check for the clock at C135 13MHz Check the clock generation circuit related to U101 No Yes Check the initial operation Yes Ye...

Page 26: ... C329 C327 C302 MIC_BIAS_2V1 C338 C325 C340 AVDD_TEMP_2V65 C321 VBAT VDD_KEY_2V95 C301 C312 34 4 55 66 7 G G 8 9 G G 10 G6 VCC_CP_4V CN300 11 2 2 3 D4 VSS20 VSS21 C4 F4 VSS3 G4 VSS4 VSS5 J3 G5 VSS6 VSS7 K5F6 VSS8 VSS9 E6 E7 VSS14 VSS15 D7C7 VSS16 D6 VSS17 E5 VSS18 VSS19 D5 F5 VSS2 C2 VCC VIBVBAT B3 A3 VIBVDD H7 VPROG VSS1 E4 G7 VSS10 VSS11 G8F7 VSS12 VSS13 B8 A1 SIMSCN B1 SIMSCP B2 SIMVBAT SLPMOD ...

Page 27: ...SAMSUNG Proprietary Contents may change without notice Flow Chart of Troubleshooting This Document can not be used without Samsung s authorization 7 3 C339 ...

Page 28: ... not be used without Samsung s authorization Flow Chart of Troubleshooting 7 4 7 2 Initial R204 RSTON H Initial Failure Check the circuit related to reset END No Yes Is U201 Pin memory CE OK Yes Yes No Check the U201 Check the circuit around LCD U201 Short or not solder Yes ...

Page 29: ... J5 HA15 GPIO3 M9 GPIO4 P7 L7 GPIO5 GPIO6 L9 GPIO7 N7 GPIO8 P6 GPIO9 N8 GPON1 L10 CS_N2 CS_N3 G3 B5 CTS0_N A11 EARN EARP B10 M12 GPIO0 K9 GPIO1 K8 GPIO10 GPIO2 L8 D8 E9 CDO D9 CEN CKI P11 P13 CKI32I CKI32O P14 CS_N0 N4 CS_N1 G5 M5 P10 AVSS BDIO E11 BIEN F10 F11 BIOCLK BOEN G11 B11 BUZ CCLK E10 CDI E12 D13 AUXDAC2 D12 AUXDAC3 AUXMICN A14 B14 AUXMICP K14 AUXON AUXSP A10 AUXST G10 P12 AVDD ACLK ADI A...

Page 30: ...SAMSUNG Proprietary Contents may change without notice This Document can not be used without Samsung s authorization Flow Chart of Troubleshooting 7 6 ...

Page 31: ...without Samsung s authorization 7 7 7 3 Charging Part Check the U300 pin 2 4 9V Abnormal charging part END No Yes U300 pin 4 H No Yes Check the C300 4 2V No Yes Check the the circuit related to DCVOLT Resolder or replace U300 Check the circuit related to CHG_ON signal Yes U300 pin 5 L Yes No Resolder or replace U300 ...

Page 32: ... without Samsung s authorization Flow Chart of Troubleshooting 7 8 Charging CHARGER IC R302 R303 VDD2_2V85 VBAT C306 UDZS8 2B DCVOLT_5V C307 R300 C308 C300 C303 C304 R304 12 G 3 GND IN 2 ISET 4 1 VL 6 _ACOK _CHG 8 5 _EN U300 7 BATT 9 G 10 GG 11 MES_BATT CHARGER_OK END_OF_CHARGE CHG_ON ...

Page 33: ...SAMSUNG Proprietary Contents may change without notice Flow Chart of Troubleshooting This Document can not be used without Samsung s authorization 7 9 ...

Page 34: ...tion Flow Chart of Troubleshooting 7 10 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: ...ment can not be used without Samsung s authorization 7 11 7 5 Microphone Part Check the connection from MIC Check the circuit from U202 to MIC Resolder MIC Resolder the R400 R401 R404 R407 L400 L401 C408 and C412 END No Yes Yes Yes Yes No Check the MIC No Replace the MIC Microphone does not work ...

Page 36: ... Chart of Troubleshooting 7 12 Close to MCP Close to microphone MICROPHONE R400 C405 C412 VDD2_2V85 MIC_BIAS_2V1 R401 C407 V402 C400 C414 C411 V401 5 6 7 R409 U401 2 C418 R416 L401 VDD2_2V85 C408 R415 R404 C406 C417 R412 VDD2_2V85 R402 L400 2 8 1 U401 1 4 3 C416 C413 R407 M400 MIC MIC_P MIC_N JACK_IN EAR_SWITCH Microphone ...

Page 37: ...408 pin 5 1 9V Speaker does not work Check the Clock signal at E2 CLKI of U406 13MHz Check the clock generation circuit related to OSC101 and U406 END No Yes No Resolder or replace U408 R405 R411 Around U406 1 8V When U406 operate Resolder U406 Yes No HEA1 pin 24 26 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 38: ... G3 RD SI G4 DVDD E1 CLKI E2 E3 A1 MCLK E6 IRQ E7 IOVDD1 E8 A0 F1 D7 F2 C8 SPVDD DVSS D1 PLLC D2 RST D3 D4 INDEX D6 TESTI0 DVDD D7 DVSS D8 SPVSS B8 AVDD C1 TXOUT C2 RXIN C3 EXTIN C4 BBR C5 EXTOUT C6 TESTI3 C7 SPOUT1 A8 AVSS B1 VREF B2 HPC B3 EQ1 B4 BBL B5 HPOUTL B6 SPOUT1 B7 NC 2 A1 RXIN EXC A2 EQ2 A3 EQ3 A4 A5 HPVSS HPOUTR A6 SPOUT2 A7 U406 YMU788 NC 1 C424 VDD_1 9V R417 R405 VDD_1 9V C421 C420 R...

Page 39: ...SAMSUNG Proprietary Contents may change without notice Flow Chart of Troubleshooting This Document can not be used without Samsung s authorization 7 15 ...

Page 40: ...d without Samsung s authorization Flow Chart of Troubleshooting 7 16 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: ...in 3 15 1 5V Resolder or replace U402 END No Yes Yes Receiver does not work SPK PAD 1 5V Change LCD module No Yes Is Receiver working Replace the Receiver No Yes No Resolder or replace U402 Yes No Resolder EAR400 EAR400 pin 5 2 short Yes HEA1 pin 24 26 1 5V No Resolder HEA1 Yes Check the soldering of the speaker wire No Modify the speaker wire soldering Yes U402 pin 8 12 1 5 ...

Page 42: ...SAMSUNG Proprietary Contents may change without notice This Document can not be used without Samsung s authorization Flow Chart of Troubleshooting 7 18 ...

Page 43: ...not be used without Samsung s authorization 7 19 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 HEA1 pin 2 2 8V Check the U502 No Yes HEA1 pin 19 HWR_N 21 HA 1 is OK Check the U202 No Yes Yes Replace the LCD Module ...

Page 44: ...SAMSUNG Proprietary Contents may change without notice This Document can not be used without Samsung s authorization Flow Chart of Troubleshooting 7 20 TP212 ...

Page 45: ...ts may change without notice Flow Chart of Troubleshooting This Document can not be used without Samsung s authorization 7 21 7 10 Key Back Light C333 H Check the PMU related to VDD_KEY END No Yes Key Backlight does not work Yes ...

Page 46: ...nput CH center freq Amp 50dBm Check U100 pin2 L pin4 L pin8 L U100 pin5 65dBm F101 pin1 70dBm U101 pin6 7 8 9 1V U101 pin32 70dBm pin33 70dBm Check ANT Switch control circuit Resolder U100 Resolder F101 C107 L115 Resolder L112 L113 L114 Check U101 pin10 22 28 2 7V pin20 4 0V Check Resolder RF PSU Part Check Resolder U101 RF26MHz part R104 R105 R130 R131 R132 R133 1V Yes Yes Yes Yes Yes Yes Yes Yes...

Page 47: ...SAMSUNG Proprietary Contents may change without notice Flow Chart of Troubleshooting This Document can not be used without Samsung s authorization 7 23 ...

Page 48: ...C100 pin1 6Bm U101 Pin6 7 8 9 500mV Resolder CN101 C102 Check U100 pin2 L pin4 H pin8 L Resolder C119 L117 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 R129 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 Check V...

Page 49: ...SAMSUNG Proprietary Contents may change without notice Flow Chart of Troubleshooting This Document can not be used without Samsung s authorization 7 25 ...

Page 50: ... U100 pin1 65dBm F102 pin1 70dBm U101Pin38 70dBm Pin39 70dBm U101 pin6 7 8 9 1V R130 R131 R132 R133 1V Check U202 END Resolder CN101 C102 Check U100 pin2 L pin4 L pin8 L Check ANT Switch control circuit Resolder U100 No Yes Resolder F102 C104 L111 Resolder L105 L106 L108 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...

Page 51: ...SAMSUNG Proprietary Contents may change without notice Flow Chart of Troubleshooting This Document can not be used without Samsung s authorization 7 27 ...

Page 52: ...der U100 Check U100 pin2 L pin4 L pin8 H Yes Resolder CN101 C102 END Check U202 U101 Pin6 7 8 9 500mV OSC100 pin2 6Bm U102 Pin37 3dBm U102 Pin31 20dBm U100 Pin9 20dBm U100 Pin7 20dBm Resolder U101 or check Txcpo R129 Check Resolder RF PSU part Check U101 pin4 4 0V pin22 28 2 7V Resolder R115 R120 R121 No Yes Yes Yes Check U102 VBATT pin42 43 OK Resolder or change U102 or check PAM control signal C...

Page 53: ...SAMSUNG Proprietary Contents may change without notice Flow Chart of Troubleshooting This Document can not be used without Samsung s authorization 7 29 ...

Page 54: ... C103 L104 Check ANT Switch control circuit Change or Resolder U100 Check U100 pin2 H pin4 L pin8 L Resolder CN101 C102 END Check U202 R130 R131 R132 R133 1V U101 Pin 6 7 8 9 1V U101 Pin35 36 70dBm F100 Pin1 70dBm U100 Pin3 65dBm U100 Pin7 65dBm Check Resolder U101 RF 26MHz part R104 R105 Check Resolder RF PSU part Check U101 pin4 4 0V pin22 28 2 7V Resolder L101 L102 L103 Yes No Yes Yes Yes Yes Y...

Page 55: ...SAMSUNG Proprietary Contents may change without notice Flow Chart of Troubleshooting This Document can not be used without Samsung s authorization 7 31 ...

Page 56: ...U101 pin4 4 0V pin22 28 2 7V Resolder R115 R120 R121 Check VBATT Check U102 VBATT pin42 43 OK Resolder or change U102 or check PAM control signal Resolder C117 L116 Check ANT Switch control circuit Change or Resolder U100 Check U100 pin2 L pin4 L pin8 H Yes Resolder CN101 C102 END Check U202 U101 Pin6 7 8 9 500mV OSC100 pin2 6Bm U102 Pin37 3dBm U102 Pin31 20dBm U100 Pin9 20dBm U100 Pin7 20dBm No N...

Page 57: ...SAMSUNG Proprietary Contents may change without notice Flow Chart of Troubleshooting This Document can not be used without Samsung s authorization 7 33 ...

Page 58: ...XCPO 3 TXCPVCC 45 TXON 46 35 PCSIA 36 PCSIB 8 QA QB 9 REFGND 14 15 REFIN REFVCC 16 RFCPO 21 20 RFCPVCC 34 RFGND1 GND2 42 43 GND3 GND4 44 27 GNDTUNE 32 GSMIA 33 GSMIB 6 IA 7 IB IFVCC 10 45 NC1 NC2 CLKFDBX 11 CLKOUT DATA 17 38 DCSIA 39 DCSIB EN 19 EXTRES 2 FESW1 29 30 FESW2 40 FESWON 41 GND1 U101 12 CAFCSUP 18 CLK 13 R124 VCC3DCS PCS 21 18 VCC3GSM VCCOUT 19 VCCOUT 20 VRAMP 45 NC 15 TXENABLE 41 VBATT...

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