Samsung SGH-T400 Service Manual
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Samsung SGH-T400 Service Manual

Samsung SGH-T400 Service Manual

Dual band mobile cellular phone
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Download this manual See also: Owner's Manual
ELECTRONICS
SERVICE
DUAL BAND MOBILE CELLULAR PHONE
DUAL BAND Mobile
Cellular Phone
SGH-T400
Manual
CONTENTS
1. Exploded Views and Parts List
2. PCB Diagrams
3. Electrical Parts List
4. Block Diagrams
5. Flow Chart of Troubleshooting and
Circuit Diagrams

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Summary of Contents for Samsung SGH-T400

  • Page 1 DUAL BAND Mobile Cellular Phone ELECTRONICS SGH-T400 SERVICE Manual DUAL BAND MOBILE CELLULAR PHONE CONTENTS 1. Exploded Views and Parts List 2. PCB Diagrams 3. Electrical Parts List 4. Block Diagrams 5. Flow Chart of Troubleshooting and Circuit Diagrams...
  • Page 2 ELECTRONICS Samsung Electronics Co.,Ltd. Printed in Korea 12/2002 Rev 1.0 GH68-03158A...

  • Page 3: Table Of Contents

    1. Exploded Views and Parts List Main Main Parts List Travel Adapter Travel Adapter Parts List Ciger Light Adapter Ciger Light Adapter Parts List Test Jig EAR Microphone Data Kit 1-10 Battery Charger 2. PCB Diagrams Main Top Main Bottom 3.
  • Page 4 1. SGH-T400 Exploded Views and Parts List 1-1 Main Exploded Views and Parts List...

  • Page 5: Main Parts List

    1-2 Main Parts List Location Remark Description SEC CODE DUAL WINDOW LCD GH72-05005A FOLDER UPPER GH75-02368A GH96-01231A SPEAKER 3001-001360 MOTOR 3101-001294 FOLDER LOWER GH75-02369A WINDOW LCD GH72-05004A SCREW 6001-001429 SCREW CAP GH74-03025A FRONT COVER GH75-02367A KEYPAD GH75-02371A MAIN PBA GH92-01367A VOLKEY F-PCB GH59-00593A DOME SHEET...

  • Page 6: Travel Adapter

    1-3 Travel Adapter 1-4 Travel Adapter Parts List TYPE SEC CODE REMARK GH44-00171A CHINA GH44-00184A EUROPE GH44-00171C UNITED KINGDOM Gh44-00171E TAIWAN Exploded Views and Parts List...

  • Page 7: Ciger Light Adapter

    1-5 Ciger Light Adapter 1-6 Ciger Light Adapter Parts List DESCRIPTION SEC CODE REMARK Ciger Light Adapter Code GH44-00170A BLACK Exploded Views and Parts List...

  • Page 8: Test Jig

    1-7 Test Jig TEST JIG GH80-10508A TEST JIG CABLE GH39-00079A RF CABLE GH39-00182A Exploded Views and Parts List...
  • Page 9 1-7-1 Test Jig POWER SUPPLY 8922 or 8960 WIRELESS COMMUNICATIONS TEST SET RF CABLE TEST JIG CABLE 232 CABLE Note PC Exploded Views and Parts List...
  • Page 10 1-8 Wearable EAR Microphone Wearable EAR Microphone GH59-00394B 1-9 Data Kit DATA KIT GH39-00143B 1-10 Battery Charger BATTERY CHARGER GH44-00279A Exploded Views and Parts List...
  • Page 11 2. PCB Diagrams 2-1 Main Top PCB Diagrams...
  • Page 12 2-2 Main Bottom PCB Diagrams...

  • Page 13: Main Parts List Top

    3. Electrical Parts List 3-1 Main Parts List Top NO Refer Part Description Vendor Part No. ence CODE D300 0401-001033 DIODE-SWITCHING;MCL4154 MCL4154 D400 0406-001083 DIODE-TVS;ESDA6V1W5 ESDA6V1W5 D314 0407-001007 DIODE-ARRAY;UMN1 UMN1 Q100 0501-000225 TR-SMALL SIGNAL;2SC4617 2SC4617 Q302 0501-002011 TR-SMALL SIGNAL;2SD2114KT146V 2SD2114KT146V Q305 0502-001201 TR-POWER;ZXT13P20DE6...
  • Page 14 NO Refer Part Description Vendor Part No. ence CODE R479 2007-000141 “R-CHIP;2.2K,5%” ERJ2GEJ222X R480 2007-000141 “R-CHIP;2.2K,5%” ERJ2GEJ222X R335 2007-000143 “R-CHIP;4.7K,5%” ERJ2GEJ472X R101 2007-000148 “R-CHIP;10K,5%” ERJ2GEJ103X R115 2007-000148 “R-CHIP;10K,5%” ERJ2GEJ103X R117 2007-000148 “R-CHIP;10K,5%” ERJ2GEJ103X R325 2007-000148 “R-CHIP;10K,5%” ERJ2GEJ103X R337 2007-000148 “R-CHIP;10K,5%” ERJ2GEJ103X R456 2007-000148...
  • Page 15 NO Refer Part Description Vendor Part No. ence CODE R326 2007-003001 “R-CHIP;12,5%” RMC16S-120J-TP R327 2007-003001 “R-CHIP;12,5%” RMC16S-120J-TP R120 2007-007008 “R-CHIP;300,5%” MCR01MZSJ301 R121 2007-007008 “R-CHIP;300,5%” MCR01MZSJ301 R122 2007-007008 “R-CHIP;300,5%” MCR01MZSJ301 R123 2007-007008 “R-CHIP;300,5%” MCR01MZSJ301 R307 2007-007009 “R-CHIP;75ohm,5%” RC1005J750CS R450 2007-007317 “R-CHIP;2.2K,1%” MCR01MZSF2201 R451 2007-007317...
  • Page 16 NO Refer Part Description Vendor Part No. ence CODE C107 2203-000254 “C-CERAMIC,CHIP;C103K,10NF,16V” CM05X7R103K16AT C108 2203-000254 “C-CERAMIC,CHIP;C103K,10NF,16V” CM05X7R103K16AT C109 2203-000254 “C-CERAMIC,CHIP;C103K,10NF,16V” CM05X7R103K16AT C149 2203-000254 “C-CERAMIC,CHIP;C103K,10NF,16V” CM05X7R103K16AT C300 2203-000254 “C-CERAMIC,CHIP;C103K,10NF,16V” CM05X7R103K16AT C303 2203-000254 “C-CERAMIC,CHIP;C103K,10NF,16V” CM05X7R103K16AT C307 2203-000254 “C-CERAMIC,CHIP;C103K,10NF,16V” CM05X7R103K16AT C309 2203-000254 “C-CERAMIC,CHIP;C103K,10NF,16V” CM05X7R103K16AT C313 2203-000254...
  • Page 17 NO Refer Part Description Vendor Part No. ence CODE C133 2203-000812 “C-CERAMIC,CHIP;C330J,33PF,50V” GRP1555C1H330JZ01E C150 2203-000812 “C-CERAMIC,CHIP;C330J,33PF,50V” GRP1555C1H330JZ01E C151 2203-000812 “C-CERAMIC,CHIP;C330J,33PF,50V” GRP1555C1H330JZ01E C451 2203-000812 “C-CERAMIC,CHIP;C330J,33PF,50V” GRP1555C1H330JZ01E C452 2203-000812 “C-CERAMIC,CHIP;C330J,33PF,50V” GRP1555C1H330JZ01E C467 2203-000812 “C-CERAMIC,CHIP;C330J,33PF,50V” GRP1555C1H330JZ01E C468 2203-000812 “C-CERAMIC,CHIP;C330J,33PF,50V” GRP1555C1H330JZ01E C469 2203-000812 “C-CERAMIC,CHIP;C330J,33PF,50V” GRP1555C1H330JZ01E C495 2203-000812...
  • Page 18 Refer Part Description Vendor Part No. ence CODE C483 2203-005382 “C-CERAMIC,CHIP;6PF” GRM40X7R391K200PT C140 2203-005444 “C-CERAMIC,CHIP;3PF” CM05CG3R0B50AH C491 2203-005444 “C-CERAMIC,CHIP;C030B,3PF,50V” CM05CG3R0B50AH C145 2203-005450 “C-CERAMIC,CHIP;C5R6B,5.6PF,50V” GRP1555C1H5R6BZ01E C482 2203-005480 “C-CERAMIC,CHIP;C333K,33NF,10V” GRP155R71A333KA01E C488 2203-005480 “C-CERAMIC,CHIP;C333K,33NF,10V” GRP155R71A333KA01E C492 2203-005481 “C-CERAMIC,CHIP;C473K,47NF,10V” GRP155R71A473KA01E C304 2203-005482 “C-CERAMIC,CHIP;C104K,100NF,10V” GRP155R61A104KA01E C457 2203-005503 “C-CERAMIC,CHIP;C1801J,180PF,25V”...

  • Page 19: Main Parts List Bottom

    0601-001611 LED;SLS-NNWH102TS SLS-NNWH102TS D307 0601-001611 LED;SLS-NNWH102TS SLS-NNWH102TS D311 0601-001611 LED;SLS-NNWH102TS SLS-NNWH102TS U403 0801-002540 IC-CMOS LOGIC;NC7SZ19P6X NC7SZ19P6X U400 1009-001010 IC-HALL EFFECT S/W;A3212ELH-SAMSUNG A3212ELH-SAMSUNG U302 1204-001960 IC-MELODY;YMU762 MA-3 YMU762 MA-3 V401 1405-001019 VARISTOR;VC060305A150R VC060305A150R V402 1405-001082 VARISTOR;VC040205X150R VC040205X150R V304 1405-001082 VARISTOR;VC040205X150R VC040205X150R...
  • Page 20 Refer Part Description Vendor Part No. ence CODE R310 2007-007008 “R-CHIP;300,5%” MCR01MZSJ301 R308 2007-007009 “R-CHIP;75ohm,5%” RC1005J750CS R309 2007-007009 “R-CHIP;75ohm,5%” RC1005J750CS R301 2007-007009 “R-CHIP;75ohm,5%” RC1005J750CS R302 2007-007009 “R-CHIP;75ohm,5%” RC1005J750CS R303 2007-007009 “R-CHIP;75ohm,5%” RC1005J750CS R304 2007-007009 “R-CHIP;75ohm,5%” RC1005J750CS R305 2007-007009 “R-CHIP;75ohm,5%” RC1005J750CS R306 2007-007009 “R-CHIP;75ohm,5%”...
  • Page 21 4. Block Diagrams 4-1 Main Baseband Block Diagrams...

  • Page 22: Main Rf

    4-2 Main RF Block Diagrams...

  • Page 23: Rf Transmit Part

    4-2-1 RF Transmit Part Block Diagrams...

  • Page 24: Rf Receive Part

    4-2-2 RF Receive Part Block Diagrams...

  • Page 25: Power On

    5. Flow Chart of Troubleshooting and Circuit Diagrams 5-1 Power ON 'POWER ON'does not work Check the Battery Voltage Charge the Battery is more than 3.4V? The node Check U300 and the path from +VBATT between D300 and C305 > 2.8 V ? to C305 When the "END"...
  • Page 26 Flow Chart of Troubleshooting and Circuit Diagrams...
  • Page 27 5-2 Initial Initial Failure After power on, Downloading SW is OK ? check and repair the important (Is CSROM signal OK ?) signals of U406 as follows The node Check the circuit between R456 and C462 related to reset = "H" (RST) R461 = "H"...
  • Page 28 Flow Chart of Troubleshooting and Circuit Diagrams...

  • Page 29: Charging Part

    5-3 Charging Part Abnormal charging part Check the CN4-1 pin 17,18 > 4.9 V ? Replace TA Check the U305 pin 3 > 4.9 V ? Resolder C339 R342(CHG_ON side) = "L" ? Resolder R342 Resolder components around Check the U305 pin 5 4.2V ? U305 Flow Chart of Troubleshooting and Circuit Diagrams...
  • Page 30 Flow Chart of Troubleshooting and Circuit Diagrams...

  • Page 31: Sim Part

    5-4 Sim Part Phone can't access SIM card Q304 pin 4 = 3.0 V ? Resolder R338 Replace Q304 or Q304 pin 5 = "H" ? Replace PBA Q304 pin 2, 3 = 3.0 V ? Replace Q304 After Power ON, Check SIMCLK Signal on CN302 pin 3 Replace PBA in a few second...
  • Page 32 Flow Chart of Troubleshooting and Circuit Diagrams...

  • Page 33: Microphone Part

    5-5 Microphone Part Microphone does not work Check the connection Resolder MIC FPCB from MIC Check the circuit Resolder the R468, R469, R472, related to U406 R474, C482, C485 and C488 Check the MIC Replace the MIC Flow Chart of Troubleshooting and Circuit Diagrams...
  • Page 34 5-10 Flow Chart of Troubleshooting and Circuit Diagrams...

  • Page 35: Speaker Part

    5-6 Speaker Part Speaker does not work R471 = "H"? Replace the PBA (MC_PDN) U105 pin 13 = "H" ? Resolder R118 Check the clock generation circuit Check the clock signal at Pin1 of U302 (related to U102 and Q100) U304 pin 3, 9 = 1.8 V ? Resolder U304 CN100 pin 5, 6 = 1.8 V ?
  • Page 36 SPVSS SPVD HPOUT-R IOVD HPOUT-L/MONO Flow Chart of Troubleshooting and Circuit Diagrams 5-12...

  • Page 37: Key Data Input

    5-7 Key Data Input Check Initial operation When one of the keys is pushed, Check the Dome sheet is it displayed on LCD Keypad is OK ? Replace the PBA 5-13 Flow Chart of Troubleshooting and Circuit Diagrams...

  • Page 38: Receiver Part

    5-8 Receiver Part 5-14 Flow Chart of Troubleshooting and Circuit Diagrams...
  • Page 39 5-15 Flow Chart of Troubleshooting and Circuit Diagrams...

  • Page 40: Ring Indicator

    5-9 Ring Indicator 5-16 Flow Chart of Troubleshooting and Circuit Diagrams...
  • Page 41 5-10 Back Light (for Color Main LCD) Backlight does not work LCD Contrast high level Select LCD Contrast high level in the menu ? U401 pin 2 = "H" ? CN100 pin 11 = "H" ? Check for the pulse signal Check the circuit Replace the PBA Resolder U401...
  • Page 42 5-11 Back Light (for Sub LCD & Key) Backlight does not work Backlight "ON" mode Select backlight "ON" mode in the menu? GPIO7 by test S/W Q302 pin 1 = "H" ? KEY PCB LED LCD BACKLIGHT R484 = "H" ? GPIO2 by test S/W Check the Check the CN100 pin 2 = "H"...

  • Page 43: Gsm Receiver

    5-12 GSM Receiver Flow Chart of Troubleshooting and Circuit Diagrams 5-19...

  • Page 44: Gsm Transmitter

    5-13 GSM Transmitter 5-20 Flow Chart of Troubleshooting and Circuit Diagrams...

  • Page 45: Dcs Receiver

    5-14 DCS Receiver Flow Chart of Troubleshooting and Circuit Diagrams 5-21...

  • Page 46: Dcs Transmitter

    5-15 DCS Transmitter 5-22 Flow Chart of Troubleshooting and Circuit Diagrams...
  • Page 47 IFLB RFLA IFLA RFLB VDDD RFLC RFLD 5-23 Flow Chart of Troubleshooting and Circuit Diagrams...
  • Page 48 VDDA VDDC XOUT SCLK SENB VDD3 IFLO PDNB IFLO RFLOP RFLO VDD2 VDD4 DIAG DIAG Flow Chart of Troubleshooting and Circuit Diagrams 5-24...
  • Page 49 VBAT VCCO VCC2 VCC1 Flow Chart of Troubleshooting and Circuit Diagrams 5-25...

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