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Samsung SGH-I750 Service Manual
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Samsung SGH-I750 Service Manual

Samsung SGH-I750 Service Manual

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GSM TELEPHONE
GSM TELEPHONE
SGH-i750
1.
2.
3.
4.
5.
6.
7.
8.
Disassembly and
Assembly instructions
CONTENTS

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  • Page 1: Table Of Contents

    GSM TELEPHONE SGH-i750 GSM TELEPHONE CONTENTS Specification Circuit Description Exploded Views and Parts List Electrical Parts List Block Diagrams PCB Diagrams Flow Chart of Troubleshooting Disassembly and Assembly instructions...

  • Page 2: Specification

    Power Cl a ss 5pcl ~ 19pcl Sensit ivit y - 102dBm TDMA Mux Cell Radius 35Km SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization EGSM 900 Phas e 2 880~915 925~960 0~124 & 975~1023 45MHz 270.833kbps...

  • Page 3: Gsm Tx Power Class

    15±3 dBm 13±3 dBm 11±5 dBm 9±5 dBm 7±5 dBm 5±5 dBm SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization TX Power DCS1800 control level 30±3 dBm 28±3 dBm 26±3 dBm 24±3 dBm 22±3 dBm...

  • Page 4: Circuit Description

    LO suppression, quadrature phase error, quadrature amplitude balance and low noise floor specification. Output matching/balun components drive a standard 50 ohms single ended load. SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization < Truth Table >...
  • Page 5 The CGU offers the following features: A free-running oscillator generating the internal high clock frequency (clkcco). The typical frequency of the high clock frequency is 3.6 MHz. SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization...
  • Page 6 Synchronous Burst U tRAM. It has 16 bit data line, HD[1~16] which is connected to PCF5213, also has 24 bit address lines, HA[1~24]. There are 2 chip select signals, CS0n_FLASH and CS1n_RAM. SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization protection unit,...
  • Page 7 VWLAN18,VWLAN30 via U619(AS1352-7BC0) which is a WLAN voltage, VTV29,VTV25 via U619(AS1352-7BC0) which is a TV-Out voltage, VMOTOR33 via U619(AS1352-7BC0) which is a vibrator voltage, VBT30 via U618(XC6401EE27DR) which is a Buletooth voltage, SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization...
  • Page 8 VCAM31 via U701(BH31FB1WHFV) which is a Camera voltage. Backup Battery(ML1220-TT2) The SGH-i750 has a back-up battery(ML1220-TT2) that stores data of SDRAM when the battery removed or becomes low battery state that is below 2.8V. The low battery state is checked by voltage detector or R3111Q281C(U607).
  • Page 9 Wireless Part Antenna(C1103RS) Antenna receives signal from AP(Access Point) or other devices. It is a ISM(industrial, Scientific, Medical frequencies) Band Antenna that covers only 2.4 GHz. SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization...
  • Page 10 The MultiMediaCard Controller on the Intel PXA270 can communicate with either: ● a MultiMediaCard (MMC) ● a Secure Digital (SD) Memory Card ● a Secure Digital I/O (SDIO) Card SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization Circuit Description...
  • Page 11 For user interface, a keypad is used for function. For key recognition, a key matrix is set up using signals KBC_(0)~(6) and KBR_(0)~(4) of the PXA270. SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization...
  • Page 12 3-1. Exploded View QFU01 QKP02 QME03 QAR01 QLC01 QPC01 QSP02 QSP01 QSR01 QFL01 QCR26 SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization QAN06 QRF03 QVO03 QCK01 QFR01 QCR49 QVO01 QKP01 QME01 QCR12 QSH01 QMO01...

  • Page 13: Exploded Views And Parts List

    QFR01 　 　 QCK01 　 QRF03 　 QVO01 　 QVO03 SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization Description INTENNA-SGHI750 INTENNA-CHIP INTENNA INTENNA-CHIP INTENNA MEC-RUBBER INT CON AUDIO-RECEIVER BATTERY-1100MAH,BLK,ENG,M UNIT-CAMERA MEC-BRACKET CAMERA SCREW-MACHINE...
  • Page 14 MPR-VINYL BOHO LCD MPR-TAPE BT/WLAN MPR-TAPE GASKET CONNECTOR MPR-SPONGE CAMERA MPR-TAPE CAMERA BASE AS-DOME SHEET SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization Exploded view and Part List SEC CODE 6902-000634 GH39-00410A GH39-00567A GH44-01153A...

  • Page 15: Test Jig

    3-3. Test Jig (GH80-03308A) 3-3-2. RF Test Cable (GH39-00261A) 3-3-5. Power Supply Cable SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization 3-3-1. USB JIG Cable 3-3-3. Test Cable (GH39-00477A) 3-3-6. DATA CABLE (GH39-00350A] 3-3-4.

  • Page 16: Electrical Parts List

    C206 C208 C209 C210 C211 C212 C213 C214 C215 C216 C217 C218 SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization Discription HEADER-BATTERY C-CER,CHIP C-CER,CHIP C-CER,CHIP C-CER,CHIP C-CER,CHIP C-CER,CHIP C-CER,CHIP C-CER,CHIP C-CER,CHIP C-CER,CHIP C-CER,CHIP...
  • Page 17 C314 C315 C316 C317 C318 C319 C320 C321 C322 C323 C324 C325 SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization Discription C-CER,CHIP C-CER,CHIP C-CER,CHIP C-CER,CHIP C-CER,CHIP C-CER,CHIP C-CER,CHIP C-CER,CHIP C-CER,CHIP C-CER,CHIP C-CER,CHIP C-CER,CHIP...
  • Page 18 C517 C521 C522 C523 C524 C529 C531 C532 C533 C534 C535 C536 SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization Discription C-CER,CHIP C-CER,CHIP C-CER,CHIP C-CER,CHIP C-CER,CHIP C-CER,CHIP C-CER,CHIP C-CER,CHIP C-CER,CHIP C-CER,CHIP C-CER,CHIP C-CER,CHIP...
  • Page 19 C606 C607 C608 C609 C610 C611 C612 C614 C616 C617 C618 C619 SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization Discription C-CER,CHIP C-CER,CHIP C-CER,CHIP C-CER,CHIP C-CER,CHIP C-CER,CHIP C-CER,CHIP C-CER,CHIP C-CER,CHIP C-CER,CHIP C-CER,CHIP C-CER,CHIP...
  • Page 20 C702 C703 C704 C705 C706 C707 C708 C713 C715 C716 C717 C718 SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization Discription C-CER,CHIP C-CER,CHIP C-CER,CHIP C-CER,CHIP C-CER,CHIP C-CER,CHIP C-CER,CHIP C-CER,CHIP C-CER,CHIP C-CER,CHIP C-CER,CHIP C-CER,CHIP...
  • Page 21 C826 C828 C829 C830 C831 C832 C833 C834 C835 C836 C840 C843 SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization Discription C-CER,CHIP C-CER,CHIP C-CER,CHIP C-CER,CHIP C-CER,CHIP C-CER,CHIP C-CER,CHIP C-CER,CHIP C-CER,CHIP C-CER,CHIP C-CER,CHIP C-CER,CHIP...
  • Page 22 L112 L113 L114 L115 L117 L118 L119 L122 L123 L124 L125 L126 SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization Discription C-CER,CHIP C-CER,CHIP C-CER,CHIP C-CER,CHIP DIODE-TVS DIODE-ARRAY DIODE-TVS DIODE-TVS DIODE-TVS FILTER-SAW FILTER-SAW FILTER-SAW...
  • Page 23 R108 R109 R110 R111 R112 R116 R117 R118 R119 R120 R202 R204 SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization Discription INDUCTOR-SMD INDUCTOR-SMD INDUCTOR-SMD BEAD-SMD BEAD-SMD BEAD-SMD BEAD-SMD BEAD-SMD BEAD-SMD BEAD-SMD BEAD-SMD INDUCTOR-SMD...
  • Page 24 R413 R414 R415 R416 R417 R420 R421 R422 R426 R427 R429 R430 SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization Discription R-CHIP R-CHIP R-CHIP R-CHIP R-CHIP R-CHIP R-CHIP R-CHIP R-CHIP R-CHIP R-CHIP R-CHIP...
  • Page 25 R644 R645 R646 R648 R655 R658 R659 R668 R673 R675 R677 R704 SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization Discription R-CHIP R-CHIP R-CHIP R-CHIP R-CHIP R-CHIP R-CHIP R-CHIP R-CHIP R-CHIP R-CHIP R-CHIP...
  • Page 26 R860 R861 RFS101 CONNECTOR-COAXIAL RFS802 CONNECTOR-COAXIAL SLC701 CONNECTOR-FPC/FFC/PIC SW601 TA101 TA201 TA502 SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization Discription R-CHIP R-CHIP R-CHIP R-CHIP R-CHIP R-CHIP R-CHIP R-CHIP R-CHIP R-CHIP R-CHIP R-CHIP...
  • Page 27 U205 IC-POSI.FIXED REG. U301 U302 U303 U305 U306 U307 U404 U405 U406 U407 SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization Discription C-TA,CHIP C-TA,CHIP C-TA,CHIP C-TA,CHIP C-TA,CHIP C-TA,CHIP C-TA,CHIP C-TA,CHIP C-TA,CHIP C-TA,CHIP C-TA,CHIP...
  • Page 28 IC-FLASH MEM. MODULE UME403 VR201 ZD501 ZD502 ZD503 ZD504 ZD505 SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization Discription IC-CMOS LOGIC IC-CMOS LOGIC IC-MULTI REG. FET-SILICON IC-CMOS LOGIC IC-CMOS LOGIC IC-RESET IC-MULTI REG.
  • Page 29 ZD711 ZD712 ZD714 ZD715 ZD716 ZD717 ZD719 ZD720 ZD801 ZD802 ZD803 ZD805 SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization Discription DIODE-TVS DIODE-TVS DIODE-TVS DIODE-TVS DIODE-TVS DIODE-TVS DIODE-ZENER DIODE-ZENER DIODE-TVS DIODE-TVS DIODE-TVS DIODE-TVS...

  • Page 30: Block Diagrams

    PHONE POWER IC PCF50603 5213 UAA3587 NOR FLASH 256Mb ScRAM 64Mb VC-TCXO 26MHz Downloading(serial) SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization PDA Logic BLUE TOOTH BACK-UP CIRCUIT Wireless DPRAM INTEL BULVERDE PXA270...

  • Page 31: Pcb Diagrams

    6. PCB Diagrams 6-1. Main PCB Top Diagram SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization...
  • Page 32 PCB Diagrams 6-2. Main PCB Bottom Diagram SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization...
  • Page 33 PCB Diagrams 6-3. SUB PCB Top Diagram SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization...
  • Page 34 PCB Diagrams 6-4. SUB PCB Bottom Diagram SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization...

  • Page 35: Flow Chart Of Troubleshooting

    4pin = 3.0V , 23pin = 1.3V 25pin = 1.1V , 33pin = 1.4v Check Other Power Circuit SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization Change Batt. & Check ZD709 Check U620 & Neighboring Circuits Check U604 &...
  • Page 36 VBAT VBAT PWR_SCL R612 R672 PWR_SDA C619 C620 C621 C622 R630 PWR_EN SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization VCC_BATT R678 C625 U620 R679 C630 VCC30 VCC30 VCC30 V_BKBT R601 C602 R674...
  • Page 37 Flow Chart of Troubleshooting SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization...
  • Page 38 =High Output Powers in U604 OK? Check UCP201 & TCX101 Neighboring Circuits SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization Check UME401 & Neighboring Circuits 1pin in U407 = High Check U407 Check U204...
  • Page 39 DPRAM_CS_BUL nCS_DPRAM R415 R416 BE1n HA(0) 1 INA PHONE_ACTIVE nINT_DPRAM OUTY U404 SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization UME401 TP401 TP402 BA(1) BD(0) I| O0L BA(2) BD(1) I| O1L BA(3) BD(2)
  • Page 40 Flow Chart of Troubleshooting SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization...
  • Page 41 IOVDD +AVDD_HFA _REC2 C244 +VDD_IO_HIGH PMU_RSTON C245 IT_PMU +VDD_IO_LOW SIMIO C247 U102 SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization C222 VBAT C224 TP214 C228 +VDD_IO_LOW C236 D3VDD SIMD3VBAT SIMVCC SIMIOCD SIMCKCD U204...
  • Page 42 Flow Chart of Troubleshooting SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization...

  • Page 43: Lcd Working

    7-2. LCD Working Insert Power LCD Display Back Light SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization 2pin in U200(Sub) = High? 1pin in U200(Sub) = High? 4,5pin in U805 = High? 1pin in U805...
  • Page 44 58 NC VAUDIO30 TA517 C573 OSC501 C574 C575 SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization VB AT LC D3 0 U 200 VO UT 1 CE 1 VD D2 GN D CE 2...
  • Page 45 Flow Chart of Troubleshooting 7-11 SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization...

  • Page 46: Audio Working

    Signal ON? 10pin in U502 = Low Check UCD501 & Neighboring Circuits SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization Change SPK Check R201(Sub), LCD Sub B'd & Slide FPCB 35,36pin in UCD501...
  • Page 47 VS S VS S VS S EAR_OUT- EAR_RCV 22 NC RCVOUT- RCV_SEL SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization RS PK OU T V_ GN D VAUDIO33 TA512 C502 SPK_TEMP- U502 SPK_SEL...
  • Page 48 Slide FPCB Signal ON? 2pin in U502 37,39pin in UCD501 Change U502 and 1pin in U504 Signal ON? = Low? Check UCD501 & Neighboring Circuits 7-14 SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization...
  • Page 49 7,8 pin in 1, 11 pin in U503 Check UCD501 & U503 Signal ON? Neighboring Circuits = Low? Change U503 Check UCD501 & Neighboring Circuits 7-15 SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization...
  • Page 50 MICP 2 Y3 EAR_MIC+ BT_SPKOUT+ 4 _ENABLE C578 C583 EAR_MIC- C584 R535 R536 SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization MIC+ MIC- C538 ZD506 ZD504 VAUDIO33 C508 BT_SPKOUT- U503 MICN MIC_SEL1 MIC_SEL2...
  • Page 51 Check UCD501, U503 & Neighboring Circuits 39,41pin in UCD501 Signal ON? SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization 28pin in UCD501 = High? Check EAR501 & Neighboring Circuits 9pin in EAR501 = High? Check Ear501 &...
  • Page 52 Flow Chart of Troubleshooting VTP30 EAR501 R520 L506 L507 C581 ZD505 SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization VTP30 R539 L503 C534 L504 L505 TV_OUT C539 JACK_INT KEY_INT C586 C595 7-18 C524...

  • Page 53: Key Working

    3X4 key, Camera key Application key or Navigation key Power key or Lock key SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization Break a Side Key FPCB Check CN804,ZD802,ZD805 & KEY Metrix connection circuits Break a...
  • Page 54 KBC(5) KBC(6) MLED ZD802 ZD701 KBC(2) KBC(1) ZD704 KBR(0) KBR(1) SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization VCC30 CN804 13 13 14 14 18 18 ZD805 KBC(0) V_BAT SW601 GND 5 KBR(3)

  • Page 55: Vibrator Working

    7pin in U619 = High 11pin in U619 = High Change PBA SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization Change Vibrator Check D603 & neighboring circuits Change U619 7-21 Flow Chart of Troubleshooting...
  • Page 56 Flow Chart of Troubleshooting PWR_EN VMOTOR33 C644 SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization VBAT VWLAN_EN 12 11 TRIM U616 VOUT4 C651 VWLAN30 C658 C659 D603 C643 C661 7-22 C646 VBAT VWLAN18...
  • Page 57 Flow Chart of Troubleshooting 7-23 SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization...
  • Page 58 U200(Sub) 3pin in U200(Sub) = High Check CN101(Sub) it's neighboring circuits SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization Change CN101(Sub) Check CN101(Sub) Change Sub B'd or Slide FPCB Change U200(Sub) & D104...
  • Page 59 VD D2 GN D CE 2 VO UT 2 7-25 SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization Flow Chart of Troubleshooting IR DA 30 R 102 R 103 T _DA T3 T_ CM D...
  • Page 60 Flow Chart of Troubleshooting 7-26 SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization...
  • Page 61 LCD Sub B'd Break a Change Slide FPCB Slide FPCB 6pin in Check ZD712, ZD717 & SLC701 IDA100(Sub) or Change IDA100 = High Change U200(Sub) 7-27 SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization...
  • Page 62 RSPKOUT LSPKOUT RCVOUT+ RCVOUT- SIM_IO SIM_CLK SIM_RST SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization IR DA 30 VB AT R 110 R 111 R 112 C 101 C 102 ID A 100...
  • Page 63 Flow Chart of Troubleshooting 7-29 SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization...
  • Page 64 33,35 pin is signaling ? Break Down of RFS802 ? Change RFS802 SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization Change the Ant. Check U616 & neighboring circuits Check MOD800 & neighboring circuits...
  • Page 65 R807 R807 DEBUG_EN DEBUG_EN LOCK LOCK RST_N RST_N R808 R808 C805 C805 SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization C646 VBAT VWLAN_EN 12 11 VBAT TRIM U616 VOUT4 C651 VWLAN30 C658 C659...
  • Page 66 Flow Chart of Troubleshooting 7-32 SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization...

  • Page 67: Bluetooth Working

    5pin = 3.0V in U618? in U801 5,7 pin is signaling ? SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization Flow Chart of Troubleshooting Change the Ant. Check U618 & neighboring circuits Check U801 &...
  • Page 68 Flow Chart of Troubleshooting V_BAT U617 C649 C810 C811 C855 BT_SPKOUT- BT_SPKOUT+ C856 BT_TX BT_RX SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization V_BAT U618 VBT_EN C652 R658 ANT801 VBT30 C800 C801 C802 U801 USB_DP...
  • Page 69 Flow Chart of Troubleshooting 7-35 SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization...

  • Page 70: Gsm Receiver

    >= 1V R117, R118, R119, R120 >= 1V Check U202 SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization Resolder RFS101, C104, L123 Check U101 pin2,pin4,pin8 = L Resolder F101, C107, L107 Resolder L125, L126, L106 Check U102 pin 23,26,31 >=2.7V...

  • Page 71: Gsm Transmitter

    < -11dBm U102 pin7, 8, 9, 10 < 1V Check U202 SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization Resolder RFS101, C104, L123 Check U101 pin4 = H (2.68V), pin2,8 = L Resolder C130, C133, L118...

  • Page 72: Dcs Receiver

    >= 1V R117, R118, R119, R120 >= 1V Check U202 SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization Resolder RFS101, C104, L123 Check U101 pin2, pin4, pin8 = L Resolder F103, C121, L113...

  • Page 73: Dcs Transmitter

    < -11dBm U102 pin7, 8, 9, 10 < 1V Check U202 SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization Resolder RFS101, C104, L123 Check U101 pin2, pin4 = L, pin8 = H Resolder C139, L119, C145...

  • Page 74: Pcs Receiver

    >= 1V R117, R118, R119, R120 >= 1V Check U202 SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization Resolder RFS101, C104, L123 Check U101 pin2 = H, pin4, pin8 = L Resolder F102, C117, L111...

  • Page 75: Pcs Transmitter

    < -11dBm U102 pin7, 8, 9, 10 < 1V Check U202 SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization Resolder RFS101, C104, L123 Check U101 pin2, pin8 = H, pin4 = L Resolder C139, L119, C145...
  • Page 76 Flow Chart of Troubleshooting 7-42 SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization...
  • Page 77 Flow Chart of Troubleshooting 7-43 SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization...
  • Page 78 Flow Chart of Troubleshooting 7-44 SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization...

  • Page 79: Exploded And Assembling View

    2) Disjoint SLIDE LOWER. 1) Be careful not to be scratched framework when you dismantle. SAMSUNG Proprietary-Contents may change Without notice This Document can not be used without Samsung's authorization 1) Open the actuator. 2) Pull out the FPCB carefully.
  • Page 80 1) Separate SLIDE UPPER and SUB BOARD ASS' Y. SAMSUNG Proprietary-Contents may change Without notice This Document can not be used without Samsung's authorization 1) Remove LCD FPCB CONTACT TAPE with tweezers. 2) Open the actuator and Disjoint the LCD FPCB from the LCD connector.
  • Page 81 3) Arrange SPEAKER WIRE inside SUB B'D so that GND(gold color)is seen. SAMSUNG Proprietary-Contents may change Without notice This Document can not be used without Samsung's authorization Exploded and assembling View 1) Remove the white paper on the back of SUB B'D .
  • Page 82 2) After screw 6 points sequentially using a screwdrive, combine 3*4 KEY PAD with FRONT structure. SAMSUNG Proprietary-Contents may change Without notice This Document can not be used without Samsung's authorization Fold here once so that F-PCB may fold easily.
  • Page 83 1) Fix so that there may not be MAIN PBA move. 2) Confirm whether POWER KEY was put properly. SAMSUNG Proprietary-Contents may change Without notice This Document can not be used without Samsung's authorization Exploded and assembling View ① ②...
  • Page 84 2) "LCD"Typeface should proceed upward. Specification quantity SAMSUNG Proprietary-Contents may change Without notice This Document can not be used without Samsung's authorization (When insert, PCB's SILK line should be certainly conformable with FPCB's SILK) ※ Notice : SILK line agreement confirm certainly.
  • Page 85 TAPE GASKET CONNECTOR SAMSUNG Proprietary-Contents may change Without notice This Document can not be used without Samsung's authorization Exploded and assembling View 1) Attach GASKET CONNECTOR TAPE depending on red base line. ※ Notice That do not swerve and SHORT may not happen.
  • Page 86 Exploded and assembling View SAMSUNG Proprietary-Contents may change Without notice This Document can not be used without Samsung's authorization...
  • Page 87 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. ⓒ Samsung Electronics Co.,Ltd. May. 2006 Printed in Korea. Code No.: GH68-11275A BASIC.

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