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Samsung GT-B7300B Service Manual
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Samsung GT-B7300B Service Manual

Samsung GT-B7300B Service Manual

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GSM TELEPHONE
GT-B7300B
GSM TELEPHONE
CONTENTS
1. Safety Precautions
2. Specification
3. Product Function
4. Array course control
5. Exploded View and Parts List
6. Main Electrical Parts List
7. Block Diagrams
8. PCB Diagrams
9. Flow Chart of Troubleshooting
10. Reference data
11. Disassembly and Assembly
instructions

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Summary of Contents for Samsung GT-B7300B

  • Page 1 GSM TELEPHONE GT-B7300B GSM TELEPHONE CONTENTS 1. Safety Precautions 2. Specification 3. Product Function 4. Array course control 5. Exploded View and Parts List 6. Main Electrical Parts List 7. Block Diagrams 8. PCB Diagrams 9. Flow Chart of Troubleshooting 10.

  • Page 2: Main Electrical Parts List

    1203-004043 1203-004571 U603 RP150K002A-TR 1203-004606 U202 XC6401EE23DR 1203-004806 U500 RP100K281D-TR 1203-004845 U607 TPS61161DRVR 1203-004925 U203 RP103K301D-TR 1203-005250 U604 MIC5335-MGYMT 1203-005434 U401 MAX8674EWN+ 1203-005667 U404 MAX8698EWO-T SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization...
  • Page 3 2007-007741 2007-007798 R614 RC1005F0100CS 2007-007943 R607 RK73H1ETP5603F 2007-008045 R101,R306,R308,R329 ERJ1GEJ101C 2007-008045 R332,R333,R426,R602 ERJ1GEJ101C 2007-008045 R615,R704,R806,R812 ERJ1GEJ101C 2007-008045 R813,R814 ERJ1GEJ101C 2007-008049 R307 MCR006YZPJ202 2007-008052 R411,R412,R502,R811 ERJ1GENJ472X SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization...
  • Page 4 2203-000233 2203-000233 C425 GRP1555C1H101J 2203-000254 C100,C107,C823 GRP155R71C103K 2203-000278 C1106,C531 GRP1555C1H100D 2203-000359 C415 GRP1555C1H151JD01E 2203-000386 C554,C606,C822,C824 GRP1555C1H150J 2203-000438 C102,C105,C108 GRP155R71H102K 2203-000550 C1107 GRP1555C1H200JZ01E 2203-000627 C1127,C228 GRM1555C1H220J SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization...
  • Page 5 2203-005736 2203-005736 C188,C193 GRP0335C1E101JD01E 2203-005740 C206,C207 GRM0335C1E5R0C 2203-005806 C129,C190,C199,C308 GRP033R71C102KD01E 2203-005806 C313 GRP033R71C102KD01E 2203-006048 C106,C1123,C1128 GRM155R71A104K 2203-006048 C700 GRM155R71A104K 2203-006137 C507,C508 CL05B223KONC 2203-006190 C614 GRM155R60J224KE01E SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization...
  • Page 6 2203-006668 2203-006681 C435,C705 GRM155F51E104ZA01D 2203-006707 C535 GRM0335C1E4R7C 2203-006824 C341,C406,C427,C428 CV105X5R475K10AT 2203-006824 C429,C431,C432,C445 CV105X5R475K10AT 2203-006824 C517 CV105X5R475K10AT 2203-006839 C414,C506 CL03A104KP3NNNC 2203-006841 C434,C521,C522,C523 CV05X5R105K16AH 2203-006841 C524,C526,C527,C528 CV05X5R105K16AH SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization...
  • Page 7 2703-002842 2703-002955 L700,L701,L702,L703 MLG0603S33NJT 2703-002961 L101 MLG0603SR10JT 2703-003205 L603,L604 LQG15HS82NJ02 2703-003260 L400,L401,L402,L403 CIG21W2R2MNE 2703-003260 L404,L405 CIG21W2R2MNE 2703-003534 L602 LQM21PNR47MC0D 2801-004543 OSC800 DSX321G(12MHZ,10PPM) 2801-004589 OSC201 SQ2D02600B2JCG SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization...
  • Page 8 SC301 SHIELDCAN-WM-A GH70-05584A SC300 SHIELDCAN-WM-B GH71-08731A ANT100,ANT101,ANT202 HJ-ICT-05 Please consult the GSPN website (Samsung Portal) for the most recent version of the product's part list. SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization...
  • Page 9 Check C445, C431 is 1.2V and the related cuircuit Check the U800 Check pin 6 of U800 is 'H' and the related cuircuit Check Other Power Circuit SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization...
  • Page 10 Flow Chart of Troubleshooting SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization...
  • Page 11 Flow Chart of Troubleshooting SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization...
  • Page 12 TP_TCXO_EN is "H" and and the related cuircuit C423 is 2.85V Check the UCP300 Check R408 is 'H' and the related cuircuit Check the initial operation SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization...
  • Page 13 Flow Chart of Troubleshooting SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization...
  • Page 14 Flow Chart of Troubleshooting SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization...
  • Page 15 Check the circuit related to reset at R417 Check CLK Change UCP301 XTAL_12MHZ_IN / OUT at R815 OK? Good Check the 32bit data signal Replace PBA & memory(UCP800) Good SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization...
  • Page 16 AP_nRST_IN RSO\ LDO3 LDO4 PWR_I2C_SCL LDO5 PWR_I2C_SDA LDO6 SRAD LDO7 nBATT_FAULT LBOB LDO8 JIGON LDO9 REFBP C446 AGND1 AGND2 PGND1 R422 PGND2 D400 C435 PGND3 SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization...

  • Page 17: Charging Part

    Check R415 Check the circuit related to = 'L' ? TA_nCHG signal Check the C434 or U403 pin 12 Resolder or replace U403 ≒ 4.2V SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization...
  • Page 18 Flow Chart of Troubleshooting 9-10 SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization...

  • Page 19: Sim Part

    Check the SIM Clock pin11 at HDC500 After SIM card insert, HDC500 pin 13 Resolder HDC500 or replace PBA = "H(SIM_RST)"? Check the SIM Card 9-11 SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization...
  • Page 20 Flow Chart of Troubleshooting 9-12 SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization...

  • Page 21: Microphone Part

    Solder C521, L500 again C521 of U502 Not OK Check all power source related U502 Resolder or r eplace U502 Is MIC working? Replace Mic(MIC500) or PBA 9-13 SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization...
  • Page 22 Flow Chart of Troubleshooting 9-14 SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization...
  • Page 23 Flow Chart of Troubleshooting 9-15 SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization...
  • Page 24 Check all power source Check the signal at related U501 C500, C546, C540 of and resolder or r eplace U501 HDC500 Change the PBA Does it work? 9-16 SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization...
  • Page 25 Flow Chart of Troubleshooting 9-17 SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization...
  • Page 26 Flow Chart of Troubleshooting 9-18 SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization...

  • Page 27: Receiver Part

    Check all power source Check the signal at related U502 C541, C543 of HDC500 and resolder or r eplace U502 Change the PBA Does it work? 9-19 SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization...
  • Page 28 C526 MSM_MIC_P SDTOB LOUT3|LOP C533 KEY_MIC_N SYNCA RIN1|IN1- C527 RADIO_R SYNCB RIN2|IN2- C528 SUB_MIC_N RIN4|IN3- C529 MSM_SPK_N LRCK RIN4|IN4- RCV_N TEST ROUT1|RCN CODEC_OUT_R ROUT2 9-20 SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization...
  • Page 29 Flow Chart of Troubleshooting 9-21 SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization...

  • Page 30: Key Data Input

    Check the Key FPCB pushed, is it displayed on LCD? When one of the keys is Replace the PBA pushed, KEY_IO signal is OK? 9-22 SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization...
  • Page 31 Flow Chart of Troubleshooting 9-23 SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization...
  • Page 32 Check the U404 or replace U404 HDC701 pin 28, 30 = 3.0V? pin 22 = 1.8V? Check the U607 HDC701 pin 2 = 18V? Replace the LCD Module 9-24 SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization...
  • Page 33 Flow Chart of Troubleshooting 9-25 SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization...
  • Page 34 Flow Chart of Troubleshooting 9-26 SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization...
  • Page 35 Check pin 14, 16, 18, 20 Check UCP800 Working properly? Does lt looking good? Check F704, F705 Is there another problem? Replace the camera module 9-27 SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization...
  • Page 36 Flow Chart of Troubleshooting 9-28 SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization...
  • Page 37 Flow Chart of Troubleshooting 9-29 SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization...
  • Page 38 Check pin 10, 11, 13, 18 Check UCP800 Working properly? Check F704, F705 Does lt looking good? Is there another problem? Replace the camera module 9-30 SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization...
  • Page 39 Flow Chart of Troubleshooting 9-31 SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization...
  • Page 40 Flow Chart of Troubleshooting 9-32 SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization...

  • Page 41: Gsm850 Receiver

    51 >= -70dBm U101 pin 1,3,23 Check all voltage Check & Resolder >= 1V sources of U101 CP PMIC(U401) Is it OK? Resolder U101 Check UCP300 9-33 SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization...
  • Page 42 Flow Chart of Troubleshooting 9-34 SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization...

  • Page 43: Gsm850 Transmitter

    U101 pin 1,3,23 Check all voltage Check & Resolder >= 1V sources of U101 CP PMIC(U401)t Is it OK? Resolder U101 Check UCP300 9-35 SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization...
  • Page 44 Flow Chart of Troubleshooting 9-36 SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization...

  • Page 45: Gsm900 Receiver

    49 >= -70dBm U101 pin 1,3,23 Check all voltage Check & Resolder >= 1V sources of U101 CP PMIC(U401) Is it OK? Resolder U101 Check UCP300 9-37 SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization...
  • Page 46 Flow Chart of Troubleshooting 9-38 SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization...

  • Page 47: Gsm900 Transmitter

    U101 pin 1,3,23 Check all voltage Check & Resolder >= 1V sources of U101 CP PMIC(U401)t Is it OK? Resolder U101 Check UCP300 9-39 SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization...
  • Page 48 Flow Chart of Troubleshooting 9-40 SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization...
  • Page 49 47 >= -70dBm U101 pin 1,3,23 Check all voltage Check & Resolder >= 1V sources of U101 CP PMIC(U401) Is it OK? Resolder U101 Check UCP300 9-41 SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization...
  • Page 50 Flow Chart of Troubleshooting 9-42 SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization...
  • Page 51 U101 pin 1,3,23 Check all voltage Check & Resolder >= 1V sources of U101 CP PMIC(U401)t Is it OK? Resolder U101 Check UCP300 9-43 SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization...
  • Page 52 Flow Chart of Troubleshooting 9-44 SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization...
  • Page 53 45 >= -70dBm U101 pin 1,3,23 Check all voltage Check & Resolder >= 1V sources of U101 CP PMIC(U401) Is it OK? Resolder U101 Check UCP300 9-45 SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization...
  • Page 54 Flow Chart of Troubleshooting 9-46 SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization...
  • Page 55 U101 pin 1,3,23 Check all voltage Check & Resolder >= 1V sources of U101 CP PMIC(U401)t Is it OK? Resolder U101 Check UCP300 9-47 SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization...
  • Page 56 Flow Chart of Troubleshooting 9-48 SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization...
  • Page 57 Check RFS100 or Check C1107 = -56 dBm? F100 (the method like GSM) Check C1119 = -59 dBm? Replace DUF102 Resolder U101 or Change The End 9-49 SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization...
  • Page 58 Flow Chart of Troubleshooting 9-50 SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization...
  • Page 59 Check C1106 = 24 dBm ? Replace DUF102 Check RFS100 or F100 Check C110 = 23 dBm ? (the method like GSM) The End 9-51 SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization...
  • Page 60 Flow Chart of Troubleshooting 9-52 SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization...
  • Page 61 Check RFS100 or Check C131 = -56 dBm? F100 (the method like GSM) Check C138 = -59 dBm? Replace DUF100 Resolder U101 or Change The End 9-53 SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization...
  • Page 62 Flow Chart of Troubleshooting 9-54 SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization...
  • Page 63 Check C131 = 24 dBm ? Replace DUF100 Check RFS100 or Check C110 = 23 dBm ? F100 (the method like GSM) The End 9-55 SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization...
  • Page 64 Flow Chart of Troubleshooting 9-56 SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization...

  • Page 65: Fm Radio Part

    Is it good ? (Battery Voltage) Check from C234 to u-USB Pin 5 Replace ZD604,L602,U226922 Is it OK? Check the C527,C522 Replace the U201 Is there signal? 9-57 SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization...
  • Page 66 Flow Chart of Troubleshooting 9-58 SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization...
  • Page 67 Flow Chart of Troubleshooting 9-59 SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization...
  • Page 68 Check the U200 Pin 5 Check the U101 Is there signal? Check the U200 Pin 1 Check the U200 Is there signal? Check the C215 Replace the C215 9-60 SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization...
  • Page 69 Flow Chart of Troubleshooting 9-61 SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization...
  • Page 70 Check the Antenna Replace Antenna on Rear normal while trying Resolder MOD200 BLUETOOTH on or Change C219=26MHz? Resolder OSC201 and The End Neighboring Circuits 9-62 SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization...
  • Page 71 Flow Chart of Troubleshooting 9-63 SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization...
  • Page 72 Flow Chart of Troubleshooting 9-64 SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization...
  • Page 73 WLAN Antenna abnormal Replace Antenna on Rear normal while trying Resolder MOD200 WLAN on or Change C206=26MHz? Resolder OSC200 and The End Neighboring Circuits 9-65 SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization...
  • Page 74 Flow Chart of Troubleshooting 9-66 SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization...
  • Page 75 Flow Chart of Troubleshooting 9-67 SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization...

  • Page 76: Block Diagrams

    7. Block Diagrams 7-1. RF Solution Block Diagram SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization...

  • Page 77: Pcb Diagrams

    8. PCB Diagrams IFC600 HY07-AB0750 3722-002919 SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization...
  • Page 78 PCB Diagrams Bottom SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization...

  • Page 79: Disassembly And Assembly Instructions

    Remove screw at 1 points 1) Be careful not to make scratch and molding damage! 1) Be careful not to make scratch and molding damage! 11-1 SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization...
  • Page 80 1) Be careful not to make scratch and molding damage! 1) Be careful not to make scratch and molding damage! 2) Be careful not to make damage to connect 11-2 SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization...
  • Page 81 2) CONNECT TSP FPCB 2) CONNECT TSP FPCB 3) CONNECT CAMERA CONNECTOR 3) CONNECT CAMERA CONNECTOR 3) ASSEMBLE KEY PAD 3) ASSEMBLE KEY PAD 11-3 SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization...
  • Page 82 SIDE → BOTTOM - Screw Size: 1.4x5 - SEC code: 6001-002260 1) DO NOT DAMAGE RF SWITCH AND MIC - Screw Torque: 1.1±0.1 Kgf.cm 11-4 SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization...
  • Page 83 SIDE → BOTTOM - Screw Size: 1.4x5 - SEC code: 6001-002260 1) DO NOT DAMAGE RF SWITCH AND MIC - Screw Torque: 1.1±0.1 Kgf.cm 11-5 SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization...
  • Page 84 1) DRIVE SCREWS AT 7 POINT. 1) DRIVE SCREWS AT 7 POINT. - Screw Size: 1.4x5 - SEC code: 6001-002260 - Screw Torque: 1.1±0.1 Kgf.cm 11-6 SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization...
  • Page 85 www.s-manuals.com...

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