Samsung SGH-D820 Service Manual
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Samsung SGH-D820 Service Manual

Samsung SGH-D820 Service Manual

Gsm telephone
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Download this manual See also: User Manual
GSM TELEPHONE
SGH-D820
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

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Table of Contents
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Summary of Contents for Samsung SGH-D820

  • Page 1 GSM TELEPHONE SGH-D820 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. March. 2006 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.: GH68-09648A BASIC.

  • Page 3: Gsm General Specification

    Sensit ivit y -102dBm - 102dBm - 102dBm - 100dBm - 100dBm TDMA Mux Cell Radius 35Km 35Km 35Km SAMSUNG Proprietary-Contents may change without notice This D o cument can not b e used with out Samsung' s authoriz a tion...

  • Page 4: Gsm Tx Power Class

    7±5 dBm 7±5 dBm 4±4 dBm 5±5 dBm 5±5 dBm 2±5 dBm 2±5 dBm 0±5 dBm 0±5 dBm SAMSUNG Proprietary-Contents may change without notice This D o cument can not b e used with out Samsung' s authoriz a tion...

  • Page 5: 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...
  • Page 6 PCF50603 to turn PCF50603 on. Two 3.3V LDOs(U716, U823) enable Main and Sub Key LED on. Main and Sub Key LED are controlled by KEYLED_ON and SLIDER_KEY_ON signal respectively. SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization...
  • Page 7 KBH10PD00M-D414(memory) and CL8522S5(Multi-media chip) . It has 64 kbyte SC RAM (0.5 Mbit) and 32 kbyte SC program ROM for bootstrap loader in the ARM core. SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization...
  • Page 8 It also provides I2S data bus to playback MP3 formatted data. It utilizes 16 bit data bus for communication with the main processor, including bus interface types. SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization...

  • Page 9: Exploded View And Its Parts List

    QKP02 QVK06 QLC01 QMI01 QSH01 QME01 QCH04 QMP01 QCA01 QVK01 QCH10 QCR06 QCW01 QCH05 QRE01 QSC11 QIF01 QSC12 QRF01 QCR26 QCR12 QCR17 QBA01 QPC01 QBA00 SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization...

  • Page 10: Parts List

    UNIT-MODULE SPEAKER GH59-02851A 　 QMO01 MOTOR DC-SGHT809 GH31-00196A QRE01 　 MEC-REAR COVER GH75-08929A 　 QCH05 PMO-T FLASH COVER V3 GH72-26991A 　 QIF01 PMO-IF COVER V4 GH72-26995A SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization...
  • Page 11 MPR-TAPE SUB CONNECTOR 2 GH74-21559A MPR-TAPE LCD HOT BAR 2 GH74-21560A MPR-GASKET MAIN CONN 2 GH74-22079A MPR-VINYL BOHO WIN DUST GH74-22082A MPR-TAPE EMI 1 GH74-22084A SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization...

  • Page 12: Disassembling Procedure

    When you remove the FPCB, you must pull up the actuator Remove the Main PCB and Key pad then Slide up then remove the green tape remove the 2 screws SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization...
  • Page 13 FPCB Before disassemble the slider PCB, remove When you remove the audio part, using a the Receiver part removal hole by tweezer SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization...
  • Page 14 Exploded view and its Part list When you disassemble the slide part, push the slide part to the upper end SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization...

  • Page 15: Assembling Procedure

    SUB_MIC Check the Hot Bar, Backlight FPCB, Check the guide hole on right position Heat seal and Guide poles SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization...
  • Page 16 Be careful of two guide marks on Solder the backlight FPCB soldering process Guide hole Receiver's FPCB should be parallel to Solder the Receiver on PCB the PCB SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization...
  • Page 17 Adhere the non-conductive tape on Hot-bar backlight FPCB Solder and bond the vibrator's wire Paste the Bluetooth Ant. on the right and bend it on picture's direction side Speaker SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization...

  • Page 18: Lower Side

    Bending point of FPCB (the form of 'U') This point should not be bended Bend the SPK FPCB The bending point of SPK FPCB 3-10 SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization...
  • Page 19 FPCB connector of Sub PCB and white silk line Put the Sub Key Pad on the slide Remove the protection tape on LCD upper case window 3-11 SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization...
  • Page 20 (put on the camera's hinge first) Adhere the non-conductive tape on Pull out the Main FPCB through the the cameras FPCB slider case's hole(red circle) 3-12 SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization...
  • Page 21 SCREW HOLE HOLE Screw down the upper's 4 points Screw down the lower's 2 points Insert the screw cap Be careful of each direction 3-13 SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization...
  • Page 22 Push the whole parts Push the middle of actuator of FPCB equaly first and the both sides later Insertion guide Insertion guide II ; 3-14 SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization...
  • Page 23 Bend and push the side key FPCB Put the Main PCB on the shield can into the front case in the order described above 3-15 SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization...
  • Page 24 Bend as the form of 'U' and push the wire SPK's FPCB into the inner space SCREW The picture of side key FPCB on Screw down the side key's holder normal condition 3-16 SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization...
  • Page 25 Screw down on each 4 points of inserted first at the rear case intenna module assembly procedure SCREW Push each 5 points sufficiently Screw down on the last 2 points 3-17 SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization...
  • Page 26 4. Adhere the non-conductive tape on FPCB connector of Sub PCB 5. Check the condition of attachment 6. Bend the FPCB upward and check the alignment between FPCB and white silk line 3-18 SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization...
  • Page 27 Push the middle of actuator first and Adhere the non-conductive tape on the both sides later the Main connector of Main PCB 3-19 SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization...
  • Page 28 Bending line should be aligned with conductive tape the red line Important If the other point is bent, the critical display error will be occurred 3-20 SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization...
  • Page 29 4. Solder by the soldering iron 5. Check the soldered condition FILLET should be formed Check the condition of HOT BAR by a magnifying glass 3-21 SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization...
  • Page 30 3. Be careful of two guide marks on Land with the guide mark on PCB soldering process 3. Paste the flux on the solder land 3-22 SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization...
  • Page 31 Adhere the non-conductive tape on left side of PCB the charger pump Adhere the non-conductive tape on Adhere the non-conductive tape on Hot-bar backlight FPCB 3-23 SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization...
  • Page 32 3-7-2. RF Test Cable 3-7-3. Test Cable 3-7-4. Serial Cable (GH39-00397A) (GH39-00459A) (CSA LL64151-A) 3-7-5. Power Supply Cable 3-7-6. DATA CABLE 3-7-7. TA (GH39-00444A) (GH44-01060A) 3-24 SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization...

  • Page 33: Electrical Parts List

    2203-006423 C206 C-CER,CHIP 2203-006423 C207 C-CER,CHIP 2203-006423 C208 C-CER,CHIP 2203-006423 C209 C-CER,CHIP 2203-006423 C210 C-CER,CHIP 2203-006562 C211 C-CER,CHIP 2203-006423 C212 C-CER,CHIP 2203-006423 C213 C-CER,CHIP 2203-006423 SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization...
  • Page 34 2203-006257 C426 C-CER,CHIP 2203-000233 C429 C-CER,CHIP 2203-006257 C430 C-CER,CHIP 2203-006708 C501 C-CER,CHIP 2203-006048 C504 C-CER,CHIP 2203-001412 C505 C-CER,CHIP 2203-006048 C508 C-CER,CHIP 2203-000278 C509 C-CER,CHIP 2203-001437 SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization...
  • Page 35 2203-006562 C610 C-CER,CHIP 2203-006048 C611 C-CER,CHIP 2203-006048 C613 C-CER,CHIP 2203-006562 C615 C-CER,CHIP 2203-006838 C617 C-CER,CHIP 2203-006562 C618 C-CER,CHIP 2203-006562 C620 C-CER,CHIP 2203-006048 C621 C-CER,CHIP 2203-006324 SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization...
  • Page 36 2203-005682 C780 C-CER,CHIP 2203-005682 C781 C-CER,CHIP 2203-005682 C808 C-CER,CHIP 2203-006824 C809 C-CER,CHIP 2203-006824 C810 C-CER,CHIP 2203-006562 C814 C-CER,CHIP 2203-006048 C830 C-CER,CHIP 2203-006824 C832 C-CER,CHIP 2203-005682 SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization...
  • Page 37 2901-001353 HDC704 HEADER-BOARD TO BOARD 3711-005550 HDC710 HEADER-BOARD TO BOARD 3711-005456 HDC802 HEADER-BOARD TO BOARD 3711-005643 IFC500 SOCKET-INTERFACE 3710-002306 L101 INDUCTOR-SMD 2703-002597 L103 R-CHIP 2007-000171 SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization...
  • Page 38 PAM100 IC-POWER AMP 1201-002275 R103 R-CHIP 2007-000148 R105 R-CHIP 2007-000172 R111 R-CHIP 2007-000171 R112 R-CHIP 2007-000148 R113 R-CHIP 2007-000162 R114 R-CHIP 2007-000171 R115 R-CHIP 2007-000171 SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization...
  • Page 39 2007-008055 R401 R-CHIP 2007-007100 R404 R-CHIP 2007-000162 R500 R-CHIP 2007-002796 R501 R-CHIP 2007-000140 R504 R-CHIP 2007-007573 R505 R-CHIP 2007-000140 R506 R-CHIP 2007-002796 R507 R-CHIP 2007-002796 SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization...
  • Page 40 R830 R-CHIP 2007-000141 R831 R-CHIP 2007-000141 R835 R-CHIP 2007-000151 R836 R-CHIP 2007-000151 RFS100 CONNECTOR-COAXIAL 3705-001358 SIM400 CONNECTOR-CARD EDGE 3709-001365 SLC700 CONNECTOR-FPC/FFC/PIC 3708-002170 SLC811 CONNECTOR-FPC/FFC/PIC 3708-002170 SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization...
  • Page 41 2901-001316 U602 IC-POSI.FIXED REG. 1203-003754 U603 IC-CODEC 1205-002681 U605 IC-BATTERY 1203-003823 U715 IC-POSI.FIXED REG. 1203-003754 U716 IC-POSI.FIXED REG. 1203-003754 U720 VARISTOR 1405-001161 U721 VARISTOR 1405-001161 SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization...
  • Page 42 VR501 VARISTOR 1405-001082 VR600 THERMISTOR-NTC 1404-001221 VR810 VARISTOR 1405-001082 VR811 DIODE-TVS 0406-001201 VR812 VARISTOR 1405-001082 VR813 VARISTOR 1405-001082 ZD600 DIODE-ZENER 0403-001411 ZD605 DIODE-ZENER 0403-001427 4-10 SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization...

  • Page 43: Block Diagrams

    5. Block Diagrams 5-1. RF Solution Block Diagram SAMSUNG Proprietary-Contents may change without notice T h is Document can not b e used with out Samsung' s authoriz a tion...
  • Page 44 Block Diagrams 5-2. Base Band Solution Block Diagram SAMSUNG Proprietary-Contents may change without notice T h is Document can not b e used without Samsung ' s authori z a tion...

  • Page 45: Pcb Diagrams

    6. PCB Diagrams 6-1. Main PCB Top Diagram 6- 1 SAMSUNG Proprietary-Contents may change without notice This Document can not be use d without Samsung ' s authori z a tion...
  • Page 46 PCB Diagrams 6-2. Main PCB Bottom Diagram 6- 2 SAMSUNG Proprietary-Contents may change without notice This Document can not be use d without Samsung ' s authori z a tion...
  • Page 47 PCB Diagrams 6-3. Sub PCB Top Diagram 6- 3 SAMSUNG Proprietary-Contents may change without notice This Document can not be use d without Samsung ' s authori z a tion...
  • Page 48 PCB Diagrams 6-4. Sub PCB Bottom Diagram 6- 4 SAMSUNG Proprietary-Contents may change without notice This Document can not be use d without Samsung ' s authori z a tion...

  • Page 49: Flow Chart Of Troubleshooting

    Check the +VDD_GSM_CORE circuit = 1.875V? Check for the clock at C114 Check the clock generation circuit (related to TCX100) = 26MHz Check the initial operation SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization...
  • Page 50 +VDD_IO_HIGH 2.9V MIC_BIAS C423 +VDD_IO_LOW 1.8V +VDD_RX_TX 2.8V +VCC_SYN 2.8V +AVDD 2.6V +AVDD_HFA 2.6V RSTON MIC_BIAS 2.1V +VDD_1V8 1.8V IT_PMU +VDD_GSM_CORE 1.875V VDD_CAM 2.9V SIMIO SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization...
  • Page 51 Initial Failure TP229 (RSTON) ="H"? Check the circuit related to reset Is U305 pin 4 Check the U305 Check the 16bit data signal & memory CE SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization...
  • Page 52 RDYR_WAITU VPPR _WEO _WEU _CEO CS4n_NAND _CER CS0n_FLASH _CSU CS1n_RAM _LBU HA(0) _OEO _OER _OEU _RESETO _RESETR RSTEXTn +VDD_IO_LOW _UBU BE1n _WER _WPR R300 MEMORY SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization...

  • Page 53: Charging Part

    Resolder or replace U605 Check the circuit related to U605 pin 4 = "L"? AUX_ON signal Check the U605 pin 9 Resolder or replace U605 ≒ 4.2V SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization...

  • Page 54: Sim Part

    Check SIMCLK Signal on Check the Clock pin3 of SIM400 in a few After SIM card insert, Replace PBA SIM400 pin 2 = "H(SIM_RST)"? Check the SIM Card SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization...
  • Page 55 +VDD_IO_HIGH 2.9V MIC_BIAS C423 +VDD_IO_LOW 1.8V +VDD_RX_TX 2.8V +VCC_SYN 2.8V +AVDD 2.6V +AVDD_HFA 2.6V RSTON MIC_BIAS 2.1V +VDD_1V8 1.8V IT_PMU +VDD_GSM_CORE 1.875V VDD_CAM 2.9V SIMIO SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization...
  • Page 56 Resolder R500, R501, TA502, R505, R506 = ' H' ? Check MIC_SEL2 Check the related circuit = 'L' ? Check the MIC Replace the SPK+MIC module SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization...
  • Page 57 R506 +VDD_TV U503 +VDD_IO_HIGH C562 C567 6 V+ +IN 1 T_OUT U512 ENABLE MIC_CN R520 R522 VDD_TV_EN C564 C563 TXD1_TVOUT TA534 TXD1 MIC_CP C568 C565 SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization...
  • Page 58 Resolder R500, R501, TA502, R505, R506 = ' H' ? Check MIC_SEL2 Check the related circuit = 'H' ? Check the MIC Replace the Sub_MIC 7-10 SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization...
  • Page 59 +VDD_TV U503 +VDD_IO_HIGH C562 C567 6 V+ +IN 1 T_OUT U512 ENABLE MIC_CN R520 R522 VDD_TV_EN C564 C563 TXD1_TVOUT TA534 TXD1 MIC_CP C568 C565 7-11 SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization...

  • Page 60: Speaker Part

    Resolder R551/R552 or replace U504 Check R551 and 552 Check the connection Re-insert the connector (HDC704) status of HDC704 Is Speaker working? Change the Speaker + MIC module 7-12 SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization...
  • Page 61 SPK_R_P VOPL VOPR SPK_L_P SPK_R_N VOML VOMR SPK_L_N typical 3.8V VBAT R558 C552 C553 C555 C554 L504 R559 C558 C550 C551 C559 C556 TA557 7-13 SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization...
  • Page 62 Flow Chart of Troubleshooting 7-14 SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization...

  • Page 63: Key Data Input

    Check the Dome sheet & Key Pad given, is there something on LCD (display)? When one of the keys is Replace the HDC710 pushed, KBIO signal is OK? 7-15 SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization...
  • Page 64 Flow Chart of Troubleshooting HDC710 U720 U721 KEY_ROW(0) KEY_ROW(1) KEY_COL(4) KEY_ROW(2) KEY_COL(3) KEY_COL(0) KEY_COL(2) KEY_COL(1) 16 16 +VDD_BL 20 20 KEY_CONNECTOR 7-16 SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization...

  • Page 65: Receiver Part

    Resolder UCP200 or change PBA SPK800 +,- PAD = 1.5V? Check the soldering of the Modify the receiver FPCB soldering Receiver contacts Replace the Receiver Is Receiver working? 7-17 SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization...
  • Page 66 MIC_SEL2 SIMCLK SIMCLK SIMIO SIMIO SIMPWR CHG_ON SIMRST SIMRST GPIOA17 GPIOA29 KEYLED_ON SLIDER_KEY_ON GPIOA31 D813 RECEIVER SPK+ HFR_P L804 SPK800 L805 HFR_N SPK- D814 7-18 SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization...

  • Page 67: Back Light (For Lcd)

    Set LCD Contrast on high level Resolder U820 U820 pin 6, 7, 14 = 3.8V ? Resolder U820 U820 PIN 9~11 = H ? Replace the LCD Module 7-19 SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization...

  • Page 68: Key Back Light

    U716 pin 1 = H ? signal Replace U716 U716 pin 4 = H ? typical 3.8V VBAT +VDD_BL U716 STBY KEYLED_ON VOUT 3 VIN C754 C753 7-20 SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization...

  • Page 69: Sub Key Back Light

    Replace U823 U823 pin 4 = H ? Typical 3.8V VBAT U823 STBY SLIDER_KEY_ON 2 GND VOUT VR810 R837 R806 R807 R801 R802 C853 KEY_LED 7-21 SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization...

  • Page 70: Camera Part

    HDC802 pin 6 = H ? +VDD_CAM_CORE Check the related to 27MHz clock R305 = 27MHz? (OSC300) Is there another problem? Replace the camera module 7-22 SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization...

  • Page 71: Camera Connector

    SD_D0_SCLK GPIO2_D11 SD_D1_SCMD GPIO2_D12 SD_D2_SD_0 GPIO2_D13 SD_D3_SD_1 GPIO2_D14 SD_D4_SD_2 GPIO2_D15 SD_D5_SD_3 STROBE SIN0 TP315 TESTMODE SOUT0 C_PWDN XCTS0 M_RESET_N XRTS0 +VDD_TV IMAGE_RST TP310 R340 7-23 SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization...
  • Page 72 Flow Chart of Troubleshooting 7-24 SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization...
  • Page 73 Check the related circuit of +VDD_TV Check the soldering state Resolder or replace R520. of R520. Is it soldered correctly? It is HERA chip's problem. Replace U315. 7-25 SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization...
  • Page 74 GPIO2_D10 SD_D0_SCLK GPIO2_D11 SD_D1_SCMD GPIO2_D12 SD_D2_SD_0 GPIO2_D13 SD_D3_SD_1 GPIO2_D14 SD_D4_SD_2 GPIO2_D15 SD_D5_SD_3 STROBE SIN0 TESTMODE SOUT0 C_PWDN XCTS0 IMAGE_RST M_RESET_N XRTS0 +VDD_TV TP310 R340 7-26 SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization...
  • Page 75 Flow Chart of Troubleshooting 7-27 SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization...

  • Page 76: Gsm850 Receiver

    30 >= -74dBm Check & Resolder U102 pin 7.8.9.10 Check U102 pin U102, R129 >= 1V 23,26,31 >=2.7V RF26MHz, RF PSU Part Resolder U102 Check UCP200 7-28 SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization...

  • Page 77: Gsm850 Transmitter

    Check U102 U102 pin 6,7,8,9 pin23, 26, 31 Resolder U102 >= 1V >=2.7V Check & Resolder RFLO signal, RF26MHz, RF PSU Part Check UCP200 7-29 SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization...

  • Page 78: Gsm900 Receiver

    30 >= -74dBm Check & Resolder U102 pin 7.8.9.10 Check U102 pin U102, R129 >= 1V 23,26,31 >=2.7V RF26MHz, RF PSU Part Resolder U102 Check UCP200 7-30 SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization...

  • Page 79: Gsm900 Transmitter

    Check U102 U102 pin 6,7,8,9 pin23, 26, 31 Resolder U102 >= 1V >=2.7V Check & Resolder RFLO signal, RF26MHz, RF PSU Part Check UCP200 7-31 SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization...

  • Page 80: Dcs Receiver

    36 >= -70dBm Check & Resolder U102 pin 7.8.9.10 Check U102 U102, R129 >= 1V pin 23,26,31 >=2.7V RF26MHz, RF PSU Part Resolder U102 Check UCP200 7-32 SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization...

  • Page 81: Dcs Transmitter

    Check U102 U102 pin 6,7,8,9 pin23, 26, 31 Resolder U102 >= 1V >=2.7V Check & Resolder RFLO signal, RF13MHz, RF PSU Part Check UCP200 7-33 SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization...

  • Page 82: Pcs Receiver

    33 >= -70dBm Check & Resolder U102 pin 7.8.9.10 Check U102 U102, R129 >= 1V pin 23,26,31 >=2.7V RF26MHz, RF PSU Part Resolder U102 Check UCP200 7-34 SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization...

  • Page 83: Pcs Transmitter

    Check U102 U102 pin 6,7,8,9 pin23, 26, 31 Resolder U102 >= 1V >=2.7V Check & Resolder RFLO signal, RF26MHz, RF PSU Part Check UCP200 7-35 SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization...
  • Page 84 Flow Chart of Troubleshooting 7-36 SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization...
  • Page 85 Flow Chart of Troubleshooting 7-37 SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization...
  • Page 86 Flow Chart of Troubleshooting 7-38 SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization...

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