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Samsung SGH-X490 Service Manual

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GSM TELEPHONE
GSM TELEPHONE
SGH-X490
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CONTENTS

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Summary of Contents for Samsung SGH-X490

  • Page 1: Table Of Contents

    GSM TELEPHONE SGH-X490 CONTENTS GSM TELEPHONE Specification Circuit Description Exploded Views and Parts List Electrical Parts List Block Diagrams PCB Diagrams Flow Chart of Troubleshooting...
  • Page 2 ⓒ Samsung Electronics Co.,Ltd. December. 2005 This Service Manual is a property of Samsung Electronics Co.,Ltd. Any unauthorized use of Manual can be punished under applicable Printed in Korea. International and/or domestic law. Code No.: GH68-08926A BASIC.

  • Page 3: Specification

    0pcl ~ 15pcl 0pcl ~ 15pcl Sensi tivi ty -102dBm -102dBm -100dBm -100dBm TDMA Mux Ce ll Ra dius 35Km 35Km 1- 1 SAMSUNG Proprietary-Contents may change without notice This Document can not be used with out Samsung' s authorization...

  • Page 4: Gsm Tx Power Class

    9±5dBm 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 1- 2 SAMSUNG Proprietary-Contents may change without notice This Document can not be used with out Samsung' s authorization...

  • Page 5: Circuit Description

    2- 1 SAMSUNG Proprietary-Contents may change without notice This Document can not be used with out Samsung' s authorization...
  • Page 6 (PWM) and FET to modulate the intensity of a series of LED’ s or to control a DC/DC converter that drives LCD backlight. This phone (SGH-X490) use PWM control to contrast the backlight brightness. - Clock Generato The Clock Generator (CG) generates all clocks for internal and external usa ge.
  • Page 7 PCF50601 to enable PCF50601. Twelve key LEDs are use the "VDD_KEY" as supply voltage. "FLIP" informs the status of folder (open or closed) to the OM6359. This uses the hall effect IC, A321ELH-SAMSUNG. A magnet under main LCD enables A321ELH-SAMSUNG.
  • Page 8 This system uses the 26MHz TCXO, TOH2600DGI4KRA, SEM. AFC control signal from OM6359 controls frequency from 26MHz x-tal. The clock output frequency of UAA3536 is 13MHz. This clock is connected to OM6359, YMU788. 2- 4 SAMSUNG Proprietary-Contents may change without notice This Document can not be used with out Samsung' s authorization...
  • Page 9 QFU01 QLC01 QSP01 QMO01 QFR01 QSC14 QVO01 QFL01 QKP01 QCR53 QSC01 QMP01 QMW02 QME01 QVK01 QMI01 QAN02 QRE01 QMI03 QRF03 QIF01 QCR11 QRF01 QBA01 SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung' s authorization...

  • Page 10: Exploded Views And Parts List

    ¡ ¡ QRE01 MEC-REAR COVER GH75-08454A ¡ ¡ QRF03 PMO-EAR COVER GH72-23535A ¡ ¡ QIF01 PMO-IF COVER GH72-23556A ¡ ¡ QMI03 RMO-RUBBER MIC REAR GH73-04847A SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung' s authorization...
  • Page 11 GH74-15610A MPR-SPONGE PBA GH74-15911A MPR-TAPE PBA A GH74-16066A MPR-BOHO VINYL MAIN GH74-16545B MPR-BOHO VINYL MAIN(S) GH74-16545C MPR-BOHO VINYL SUB GH74-17302A INSTALL-SGHS500 TEST JIG GH80-01909A SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung' s authorization...
  • Page 12 3-3. Test Jig (GH80-01909A) 3-3-1. RF Test Cable 3-3-2. Test Cable 3-3-3. Serial Cable (GH39-00283A) (GH39-00217A) 3-3-4. Power Supply Cable 3-3-5. DATA CABLE 3-3-6. TA (GH39-00219A) (GH44-00184G) SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung' s authorization...

  • Page 13: Electrical Parts List

    C143 C-CER,CHIP 2203-000233 C144 C-CER,CHIP 2203-000254 C145 C-CER,CHIP 2203-000438 C146 C-CER,CHIP 2203-000438 C147 C-CER,CHIP 2203-000438 C152 C-CER,CHIP 2203-000278 C153 C-CER,CHIP 2203-000278 C156 C-CER,CHIP 2203-000438 SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung' s authorization...
  • Page 14 C321 C-CER,CHIP 2203-000885 C322 C-CER,CHIP 2203-006208 C323 C-CER,CHIP 2203-006324 C324 C-CER,CHIP 2203-000812 C325 C-CER,CHIP 2203-005065 C326 C-TA,CHIP 2404-001225 C327 C-TA,CHIP 2404-001225 C328 C-CER,CHIP 2203-005482 SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung' s authorization...
  • Page 15 C503 C-CER,CHIP 2203-005482 C504 C-CER,CHIP 2203-000278 C505 C-CER,CHIP 2203-000679 C507 C-CER,CHIP 2203-000995 C508 C-CER,CHIP 2203-000278 C509 C-CER,CHIP 2203-000995 C510 C-CER,CHIP 2203-000995 C511 C-CER,CHIP 2203-000278 SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung' s authorization...
  • Page 16 0601-002037 LED506 0601-002037 LED507 0601-002037 LED508 0601-002037 LED509 0601-002037 LED510 0601-002037 LED511 0601-002037 LED512 0601-002037 OSC100 OSCILLATOR-VCO 2806-001326 OSC101 OSCILLATOR-VCTCXO 2809-001281 Q100 TR-DIGITAL 0504-001151 SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung' s authorization...
  • Page 17 R209 R-CHIP 2007-008516 R210 R-CHIP 2007-008055 R211 R-CHIP 2007-007107 R212 R-CHIP 2007-007142 R213 R-CHIP 2007-007001 R214 R-CHIP 2007-007142 R215 R-CHIP 2007-001284 R216 R-CHIP 2007-000148 SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung' s authorization...
  • Page 18 R503 R-CHIP 2007-008531 R504 R-CHIP 2007-008531 R505 R-CHIP 2007-008531 R506 R-CHIP 2007-008531 R507 R-CHIP 2007-000162 R508 R-CHIP 2007-008531 R510 R-CHIP 2007-001298 R511 R-CHIP 2007-001298 SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung' s authorization...
  • Page 19 IC-POSI.FIXED REG. 1203-003808 U401 IC-VOLTAGE COMP. 1202-001036 U402 IC-ANALOG MULTIPLEX 1001-001306 U404 TR-DIGITAL 0504-001100 U406 IC-MELODY 1204-002461 U408 IC-CMOS LOGIC 0801-002237 U501 FILTER-EMI/ESD 2901-001325 SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung' s authorization...
  • Page 20 ZD300 DIODE-ZENER 0403-001427 ZD401 DIODE-TVS 0406-001201 ZD402 DIODE-TVS 0406-001197 ZD406 DIODE-TVS 0406-001201 ZD501 DIODE-ZENER 0403-001387 ZD502 DIODE-TVS 0406-001167 ZD503 DIODE-TVS 0406-001197 ZD504 DIODE-TVS 0406-001197 SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung' s authorization...

  • Page 21: Block Diagrams

    VDD2 (1.35V min 3.45V max , 150mA ) PCS: Pout= 32.0 dBm , E = 52% VDD3 (1.35V min 3.45V max , 100mA ) VDD4 (1.35V min 3.45V max , 150mA ) SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization...
  • Page 22 SYSTEM CLOCK (13MHz) VCC_TX_BURST VDD1 RAMP VDD2 VDD3 VDD_VIB KEY_BOARD MIC_BIAS Li-Ion Battery (Standard) VDD_KEY VDD_AMP AVDD RTC_CLOCK Charging Circuit SIM CARD (32.768KHz) AVDD_TEMP BL_VDD SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization...

  • Page 23: Pcb Diagrams

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

  • Page 24: Pcb Bottom Diagram

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

  • Page 25: Flow Chart Of Troubleshooting

    Check for the clock at C135 = 13MHz (related to U101) Y e s Check the initial operation Y e s 7- 1 SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung ' s authorization...
  • Page 26 D4C4 VBAT AVDD_TEMP_2V65 VDD_VIB_3V05 VDD2_2V85 V_ISUP_2V5 VDD3_2V85 VDD1_1V8 C333 C334 C332 C335 C336 C337 C338 C339 C340 POWER MANAGERMENT UNIT(PMU IC) 7- 2 SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung ' s authorization...
  • Page 27 Flow Chart of Troubleshooting C339 7- 3 SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung ' s authorization...
  • Page 28 (memory CE) OK ? Y e s Check the circuit around LCD & U201 (Short or not solder) Y e s 7- 4 SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung ' s authorization...
  • Page 29 KBIO6 PWM0 KBIO(5) KBIO5 KBIO(4) KBIO4 KBIO(3) KBIO3 KBIO(2) KBIO2 KBIO(1) KBIO1 KBIO(0) KBIO0 SIMIO KBIO(0:7) SIMCLK IT_PMU R225 VDD2_2V85 R226 7- 5 SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung ' s authorization...
  • Page 30 Flow Chart of Troubleshooting 7- 6 SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung ' s authorization...

  • Page 31: Charging Part

    U300 pin 5 = " L " ? CHG_ O N signal Y e s Check the C300 Resolder or replace U300 ¡ Ö 4.2V Y e s 7- 7 SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung ' s authorization...
  • Page 32 _CHG 8 END_OF_CHARGE R302 BATT MES_BATT C300 R303 3 GND _ACOK CHARGER_OK ISET CHG_ON C304 C303 C306 C307 C308 CHARGER IC 7- 8 SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung ' s authorization...
  • Page 33 Flow Chart of Troubleshooting 7- 9 SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung ' s authorization...

  • Page 34: Sim Part

    CN300 pin 2 = " H (SIM _ R ST) " ? Y e s Check the SIM Card Y e s 7- 10 SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung ' s authorization...

  • Page 35: Microphone Part

    U202 to MIC L400 , L401 , C408 and C412 Y e s Check the MIC Replace the MIC Y e s 7- 11 SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung ' s authorization...
  • Page 36 L401 C413 R402 MIC_N C412 C416 R404 C417 C418 VDD2_2V85 VDD2_2V85 R407 VDD2_2V85 R409 R412 JACK_IN EAR_SWITCH U401-1 U401-2 R415 R416 7- 12 SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung ' s authorization...
  • Page 37 " S PK_ P / S PK_ N " signal Y e s Is Speaker working ? Change the Speaker Y e s 7- 13 SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung ' s authorization...
  • Page 38 TESTI1 TESTI2 C422 BCLK TESTI3 CLKI R413 R414 LINE_OUT C421 C423 EXTIN R417 EXTOUT GPIO C424 C425 AMP_IN C426 MELODY IC 7- 14 SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung ' s authorization...
  • Page 39 Flow Chart of Troubleshooting 7- 15 SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung ' s authorization...

  • Page 40: Key Data Input

    Y e s When one of the keys is Replace the PBA pushed, KBIO signal is OK ? Y e s 7- 16 SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung ' s authorization...

  • Page 41: Receiver Part

    Check the soldering of the Modify the speaker wire soldering speaker wire Y e s Replace the Receiver Is Receiver working? Y e s 7- 17 SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung ' s authorization...
  • Page 42 Flow Chart of Troubleshooting 7- 18 SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung ' s authorization...
  • Page 43 HEA1 pin 19(HWR_ N ) Check the U202 21(HA(1)) is OK? Y e s Replace the LCD Module Y e s 7- 19 SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung ' s authorization...
  • Page 44 Flow Chart of Troubleshooting TP212 7- 20 SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung ' s authorization...

  • Page 45: Key Back Light

    Check the PMU related to " V DD _ K E Y " C333 = " H " ? Y e s 7- 21 SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung ' s authorization...

  • Page 46: Gsm Receiver

    R104 , R105 R130 , R 131 , R 132 , R 133 > = 1V Y e s Check U202 7- 22 SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung ' s authorization...
  • Page 47 Flow Chart of Troubleshooting 7- 23 SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung ' s authorization...

  • Page 48: Gsm Transmitter

    R e sol d e r U 1 01 or check Tx c p o (R 1 29) Chec k U 2 02 7- 24 SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung ' s authorization...
  • Page 49 Flow Chart of Troubleshooting 7- 25 SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung ' s authorization...

  • Page 50: Dcs Receiver

    R104 , R105 R130 , R 131 , R 132 , R 133 > = 1V Y e s Check U202 7- 26 SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung ' s authorization...
  • Page 51 Flow Chart of Troubleshooting 7- 27 SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung ' s authorization...

  • Page 52: Dcs Transmitter

    R e sol d e r U 1 01 or check Tx c p o (R 1 29) Chec k U 2 02 7- 28 SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung ' s authorization...
  • Page 53 Flow Chart of Troubleshooting 7- 29 SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung ' s authorization...

  • Page 54: Pcs Receiver

    U101, RF 26MHz part, R104 , R105 R130 , R 131 , R 132 , R133 > = 1V Y e s Check U202 7- 30 SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung ' s authorization...
  • Page 55 Flow Chart of Troubleshooting 7- 31 SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung ' s authorization...

  • Page 56: Pcs Transmitter

    R e sol d e r U 1 01 or check Tx c p o (R 1 29) Chec k U 2 02 7- 32 SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung ' s authorization...
  • Page 57 Flow Chart of Troubleshooting 7- 33 SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung ' s authorization...
  • Page 58 Flow Chart of Troubleshooting Transmitter & Receiver 7- 34 SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung ' s authorization...

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