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Samsung GT-B3740 Service Manual
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Samsung GT-B3740 Service Manual

Samsung GT-B3740 Service Manual

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GSM TELEPHONE
GSM TELEPHONE
GT-B3740
3. Product Function
7. Disassembly and Assembly
Instructions
9. Reference data
Notice :
All functionality, features, specifications and other
product information provided in this document inclu
ding, but not limited to, the benefits, design, pricing,
components, performance, availability, and capabiliti
- es of the product are subject to change without
notice or obligation. Samsung reserves the right to
make changes to this document and the product
described herein, at anytime, without obligation on
Samsung to provide notification of such change.
CONTENTS

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Summary of Contents for Samsung GT-B3740

  • Page 1: Table Of Contents

    - es of the product are subject to change without notice or obligation. Samsung reserves the right to make changes to this document and the product described herein, at anytime, without obligation on...

  • Page 2: Safety Precautions

    ― Don't use as you pleases after change other material than replacement registered on SEC System. Otherwise engineer in charge isn't charged with problem that you don't keep this rules. SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization...
  • Page 3 ― You must maintain electric contact between ESD and place due to be set up until ESD is connected completely to the proper place or a circuit board. SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization...

  • Page 4: Specification

    2. Specification 2-1.LTE General Specification L T E F D D 20 F req . Ba nd[MHz] 83 2~862 Uplin k/Down link 791 -821 DL 6150~6 449 ARF CN r ange UL 2 4150~2 4449 T x/Rx spacing -41 MHz Mo d.
  • Page 5 3. Operation Instruction and Installation Main Function • LTE 800MHz • USB2.0 Highspeed • Plug & Play(PnP) supported • Macintosh,Window XP,Vista,7 supported SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization...

  • Page 6: Exploded View And Parts List

    4. Exploded View and Parts List 4-1. Cellular phone Exploded View QFR01 QAN02 QMP01 QBC01 QRE01 QCR94 QCR67 QBC00 SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization...
  • Page 7 A/S ASSY-PBA MAIN_GT-B3740(COMM)_SVC GH82-05368A QRE01 ASSY CASE-REAR GH98-18455A QBC00 ASSY COVER-SIM GH98-18499A QBC01 ASSY CASE-CAP GH98-18456A QCR94 SCREW-TAPPING 6002-001429 QFR01 ASSY CASE-FRONT GH98-18454A QAN02 INTENNA-MAIN (GT-B3740) GH42-02800A SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization...

  • Page 8: Main Electrical Parts List

    R-CHIP 2007-000162 R340,R343,R403 R-CHIP 2007-001298 R102 R-CHIP 2007-001305 R404 R-CHIP 2007-001316 R128 R-CHIP 2007-007014 R202 R-CHIP 2007-007095 R407 R-CHIP 2007-007100 R234 R-CHIP 2007-007107 R302,R325,R326 R-CHIP SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization...
  • Page 9 R-CHIP 2203-000233 C140,C144,C146,C154 C-CER,CHIP 2203-000233 C178,C179,C182,C403 C-CER,CHIP 2203-000254 C120,C121,C243,C246 C-CER,CHIP 2203-000386 C251,C252 C-CER,CHIP 2203-000438 C108,C134,C135,C136 C-CER,CHIP 2203-000438 C168,C173,C244,C245 C-CER,CHIP 2203-000489 C175 C-CER,CHIP 2203-000585 C147,C160,C162 C-CER,CHIP SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization...
  • Page 10 C-CER,CHIP 2203-006839 C204,C206,C207,C208 C-CER,CHIP 2203-006839 C209,C210,C212,C213 C-CER,CHIP 2203-006839 C215,C217,C218,C219 C-CER,CHIP 2203-006839 C221,C222,C223,C224 C-CER,CHIP 2203-006839 C227,C229,C231,C232 C-CER,CHIP 2203-006839 C234,C235,C247,C260 C-CER,CHIP 2203-006839 C261,C262,C263,C264 C-CER,CHIP 2203-006839 C265,C355,C409,C410 C-CER,CHIP SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization...
  • Page 11 2901-001496 F401,F402 FILTER-EMI SMD 2904-001979 F103 FILTER-SAW 2910-000112 F101,F102 DUPLEXER-SAW 3301-001789 L306,L308,L309,L310 BEAD-SMD 3301-001789 L311,L312 BEAD-SMD 3301-001946 L124,L125,L307 BEAD-SMD 3301-001956 L400 BEAD-SMD 3705-001731 RFS100,RFS101 CONNECTOR-COAXIAL SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization...
  • Page 12 IPR SHIELD-CAN CLIP GH70-03349A SC226 IPR SHIELD-CAN CLIP 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 13: Level 1 Repair

    2. Go to http://fus.samsungmobile.com/GT-B3740/Vodafone/Install.html 3. Click [Download for Windows SW Package]. The file Download window will appear. 4. Click [Open]. The Install Wizard will start SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization...
  • Page 14 1. Connect the dongle to a USB port of your PC. 2. Select the Binary in sequence of Boot, Loader, LTE, ISO. (_.but / _.ldr / _.mac / _.iso) SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization...
  • Page 15 Level 1 Repair SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization...
  • Page 16 Level 1 Repair SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization...
  • Page 17 Level 1 Repair 3. Press the "Update" button. (downloading screen) SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization...
  • Page 18 4. When downloading is complete, you can see the text "State : Update Complete" 5. If you want to check binary. Double-Click icon(Samsung Connection Manager). Click button. And you will see the information of S/W Version SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization...
  • Page 19 7. Level 2 Repair 7-1. Disassembly Loose 2 screws of REAR. Disassemble the rear by using the tool. Separate PBA and FRONT. PBA and FRONT. SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization...
  • Page 20 Disassemble Shield CAN by using the tool Disassemble Shield CAN by using the tool. Be careful a damage of PBA. Be careful a damage of PBA. SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization...
  • Page 21 Be careful a damage of PBA. Be careful a damage of PBA. 1. Assemble the PBA on the FRONT assy. Assemble REAR assy. 2. Check FRONT status. (Intenna, metalizing) SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization...
  • Page 22 7. Level 2 Repair Assembles it from upper side at REAR Screw 2 points of REAR assembling. 6001-002083 (1.1 ~ 1.3 Kgf·cm) 2. Check Front, REAR hook. SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization...
  • Page 23 8. Level 3 Repair 8-1. Block Diagram SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization...
  • Page 24 Level 3 Repair 8-2. PCB Diagrams 8-2-1. Top SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization...
  • Page 25 Level 3 Repair 8-2-1. Bottom SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization...

  • Page 26: Chart Of Troubleshooting

    ※ presetting methods for checking TP - GND & TP(exp. VBUS_5.0V=C594~C599) using Oscilloscope - look over the coming out signal. ← Oscilloscope TP (Test Point) SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization...
  • Page 27 - EX) to look up the TP, shunt Cap. - if checking the GND, you can listen "beep" if checking the Signal, you can't listen it. SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization...
  • Page 28 Re-solder or change the U307 Check the 38.4Mhz Clock at C259. Check the OSC100, U202 Is it around 38.4Mhz? Check the C300 = 1.8V? Change the PBA SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization...
  • Page 29 Level 3 Repair SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization...
  • Page 30 Level 3 Repair SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization...
  • Page 31 Level 3 Repair SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization...
  • Page 32 Re-solder or change the C248, C249 Re-solder or change the OSC200 Is it around 12Mhz? Re-solder the UCP200, UME200, Change the PBA using heat-gun initial ok? 8-10 SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization...
  • Page 33 Level 3 Repair 8-11 SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization...
  • Page 34 Level 3 Repair 8-12 SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization...
  • Page 35 After SIM card insert, check the SIM500 pin4. Confirm an another PBA signal goes high frequently? Check the SIM Card (look over if it get damaged.) 8-13 SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization...
  • Page 36 Level 3 Repair 8-14 SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization...
  • Page 37 Level 3 Repair ※ CMW500 (up at picture) - CMW500 : connect using RF Cable between CMW500 & RF Connector in board. RF Connector 8-15 SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization...
  • Page 38 (TP C146) ≥ -55dBm? F101 CHECK F101, C140 pin#5 (TP C140) ≥ -60dBm? re-solder or change U101 U101 CHECK change or re-solder Check the UCP200 8-16 SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization...
  • Page 39 Check the F100 F101, C146 C146 ≥ 20dBm? re-solder or change RFS100 RFS100, C147 C147 ≥ 22dBm change or re-solder Antenna re-solder or change 8-17 SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization...
  • Page 40 Level 3 Repair 8-18 SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization...
  • Page 41 Level 3 Repair 8-19 SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization...
  • Page 42 Level 3 Repair - Rx : - Tx : 8-20 SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization...
  • Page 43 ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ 8-21 SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization...
  • Page 44 ○ ○ ● ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ 8-22 SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization...
  • Page 45 ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ 8-23 SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization...
  • Page 46 ― QPSK: Quadrature Phase Shift Keying ― RS : Reed-Solomon ― SI : Service Information ― TDM : Time Division Multiplexing ― TS : Transport Stream SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization...
  • Page 47 EN 4 R134 C173 RF_ON3 TCXO_OUT R100 RFIC_XTAL R135 R143 PA_ON_OFF R144 ground ground SAMSUNG PROPRIETARY THIS DOCUMENT CONTAINS CONFIDENTIAL PROPRIETARY INFORMATION THAT IS SAMSUNG ELECTRONICS COS PROPERTY. DO NOT DISCROSE TO OR DUPLICATE FOR OTHERS EXCEPT AS AUTHORIZED BY SAMSUNG.
  • Page 48 GPIO2 ground RED_LED GPIO94 GPIO3 SAMSUNG ELECTRONICS COS PROPERTY. GREEN_LED GPIO95 GPIO4 ground DO NOT DISCROSE TO OR DUPLICATE FOR OTHERS ground ground EXCEPT AS AUTHORIZED BY SAMSUNG. ground ground ground ground ground ground ground ground ground ground ground ground...
  • Page 49 SAMSUNG PROPRIETARY THIS DOCUMENT CONTAINS CONFIDENTIAL PROPRIETARY INFORMATION THAT IS SAMSUNG ELECTRONICS COS PROPERTY. DO NOT DISCROSE TO OR DUPLICATE FOR OTHERS EXCEPT AS AUTHORIZED BY SAMSUNG. VDD_1.8V VBUS_5.0V R300 R342 RESET_IN U307 R361 U311 C300 C350 C329 C355 VOUT1 VBUS_5.0V...
  • Page 50 SAMSUNG PROPRIETARY THIS DOCUMENT CONTAINS CONFIDENTIAL VDC_5.0V PROPRIETARY INFORMATION THAT IS SAMSUNG ELECTRONICS COS PROPERTY. VDD_1.8V VBUS_5.0V VDD_1.8V DO NOT DISCROSE TO OR DUPLICATE FOR OTHERS EXCEPT AS AUTHORIZED BY SAMSUNG. F402 F401 R400 HDC401 USB_DM USB_DP CMC_TRSTN CMC_TDI CMC_TDO...
  • Page 51 China china.samsungportal.com Asia asia.samsungportal.com Mideast & Africa mea.samsungportal.com This Service Manual is a property of Samsung Electronics Co.,Ltd. Samsung Electronics Co.,Ltd. ⓒ Any unauthorized use of Manual can be punished under applicable International and/or domestic law. 2010. 11. Rev.1.0...