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Samsung GT-B3740, Service Manual

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Samsung GT-B3740 Service Manual Download Page 22

SAMSUNG Proprietary-Contents may change without notice

7. Level 2 Repair

7-4

This Document can not be used without Samsung's authorization

1.

Assembles it from upper side at REAR

assembling.

2. Check Front, REAR hook.

Screw 2 points of REAR
6001-002083 (1.1 ~ 1.3 Kgf·cm)

5

6

Summary of Contents for GT-B3740

Page 1: ...nality 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 t...

Page 2: ...orn away Use a thicken twisted wire when you measure level A thicken twisted wire has low resistance therefore error of measurement is few Repair after separate Test Pack and Set because for short danger for example an overcurrent and furious flames of parts etc when you repair board in condition of connecting Test Pack and tuning on Take specially care of soldering because Land of PCB is small an...

Page 3: ...ined your body before you touch semiconductor or parts with semiconductor There are ways that you touch an earthed place or wear static electricity prevention string on wrist Use earthed soldering steel when you connect or disconnect ESD Use soldering removing tool to break static electricity otherwise ESD will be damaged by static electricity Don t unpack until you set up ESD on product Because m...

Page 4: ...nk 832 862 791 821 ARFCN range DL 6150 6449 UL 24150 24449 Tx Rx spacing 41MHz Mod Bit rate Bit Period Max UL 50Mbps DL 100Mbps Time Slot Period Frame Period 0 5ms Modulation UL QPSK 16QAM DL QPSK 16QAM 64QAM MS Power 23 2 Power Class CLASS 3 Sensitivity 100dBm BW10MHz TDMA Mux Cell Radius ...

Page 5: ... change without notice 3 Operation Instruction and Installation 3 1 This Document can not be used without Samsung s authorization Main Function LTE 800MHz USB2 0 Highspeed Plug Play PnP supported Macintosh Window XP Vista 7 supported ...

Page 6: ...tary Contents may change without notice 4 Exploded View and Parts List 4 1 This Document can not be used without Samsung s authorization 4 1 Cellular phone Exploded View QFR01 QMP01 QRE01 QBC00 QAN02 QCR67 QBC01 QCR94 ...

Page 7: ...Design LOC Description SEC CODE QCR67 SCREW MACHINE 6001 002083 QMP01 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 4 2 Cellular phone Parts list ...

Page 8: ... IC 1203 005521 U308 IC 1203 005580 U305 IC 1203 005812 U312 IC 1203 005865 U304 U309 IC 1203 006301 U300 U303 U306 IC 1203 006679 U311 IC 1205 003902 UCP200 IC 1205 004037 U101 IC 1209 001879 U102 IC 1404 001165 V100 THERMISTOR 1405 001298 D402 D404 VARISTOR 2007 000140 R406 R CHIP 2007 000143 R400 R CHIP 2007 000146 R402 R CHIP 2007 000148 R230 R231 R232 R300 R CHIP 2007 000152 R222 R223 R CHIP ...

Page 9: ... R CHIP 2007 008354 R311 R355 R CHIP 2007 008401 R233 R CHIP 2007 008477 R116 R120 R CHIP 2007 008516 R245 R246 R CHIP 2007 008531 R106 R254 R CHIP 2007 008548 R132 R CHIP 2007 008582 R405 R CHIP 2007 008739 R312 R314 R CHIP 2007 008806 R138 R CHIP 2007 008812 R344 R CHIP 2007 009157 R225 R226 R CHIP 2007 009793 R123 R131 R CHIP 2007 009964 R227 R CHIP 2007 010202 R144 R241 R242 R243 R CHIP 2007 0...

Page 10: ... C115 C116 C128 C130 C CER CHIP 2203 006423 C133 C138 C139 C180 C CER CHIP 2203 006423 C181 C CER CHIP 2203 006462 C170 C CER CHIP 2203 006562 C202 C203 C241 C242 C CER CHIP 2203 006562 C300 C303 C305 C309 C CER CHIP 2203 006562 C312 C314 C318 C324 C CER CHIP 2203 006562 C329 C330 C331 C332 C CER CHIP 2203 006562 C333 C340 C341 C342 C CER CHIP 2203 006562 C343 C350 C351 C352 C CER CHIP 2203 006562...

Page 11: ...001734 L105 L110 L113 L119 INDUCTOR SMD 2703 001737 L100 L104 INDUCTOR SMD 2703 001748 L127 INDUCTOR SMD 2703 001751 L126 INDUCTOR SMD 2703 001752 L107 L122 INDUCTOR SMD 2703 001786 L108 INDUCTOR SMD 2703 002309 L101 INDUCTOR SMD 2703 002901 L116 L118 INDUCTOR SMD 2703 003502 L314 INDUCTOR SMD 2703 003686 L301 L305 L313 INDUCTOR SMD 2703 003892 L302 L303 INDUCTOR SMD 2703 003913 L304 INDUCTOR SMD ...

Page 12: ...348 L106 L111 CONNECTOR 3722 002976 HDC400 PLUG USB 4709 001948 F104 F105 BALUN GH70 03349A SC203 SC204 SC205 IPR SHIELD CAN CLIP GH70 03349A SC206 SC207 SC208 IPR SHIELD CAN CLIP GH70 03349A SC209 SC212 SC214 IPR SHIELD CAN CLIP GH70 03349A SC217 SC219 SC220 IPR SHIELD CAN CLIP GH70 03349A SC221 SC224 SC225 IPR SHIELD CAN CLIP GH70 03349A SC226 IPR SHIELD CAN CLIP Please consult the GSPN website ...

Page 13: ...will be added to the desktop Manual installation 1 If the Install Wizard doesn t start automatically follow the steps below 1 Ensure that your modem is attached to a USB port of your Computer 2 Run Explorer on your Computer 3 Find My Computer Devices with Removable Storage 4 Double click Mobile_Broadband then the Install Wizard will Start The Install Wizard may not work because of user settings in...

Page 14: ...n not be used without Samsung s authorization 6 1 3 S W Downloader Program Load the binary download program by executing the C2xDownloader exe enter this file 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 1 2 3 4 ...

Page 15: ...SAMSUNG Proprietary Contents may change without notice Level 1 Repair 6 3 This Document can not be used without Samsung s authorization ...

Page 16: ...SAMSUNG Proprietary Contents may change without notice Level 1 Repair 6 4 This Document can not be used without Samsung s authorization ...

Page 17: ...SAMSUNG Proprietary Contents may change without notice Level 1 Repair 6 5 This Document can not be used without Samsung s authorization 3 Press the Update button downloading screen ...

Page 18: ...6 This Document can not be used without Samsung s authorization 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 ...

Page 19: ...may change without notice 7 Level 2 Repair 7 1 This Document can not be used without Samsung s authorization 7 1 Disassembly 1 2 3 4 Loose 2 screws of REAR Disassemble the rear by using the tool PBA and FRONT Separate PBA and FRONT ...

Page 20: ...e without notice 7 Level 2 Repair 7 2 This Document can not be used without Samsung s authorization 5 6 Disassemble Shield CAN by using the tool Be careful a damage of PBA Disassemble Shield CAN by using the tool Be careful a damage of PBA ...

Page 21: ...t can not be used without Samsung s authorization 7 2 Assembly 1 2 3 4 Assemble REAR assy Assemble the Shield CAN on the PBA Be careful a damage of PBA 1 Assemble the PBA on the FRONT assy 2 Check FRONT status Intenna metalizing Assemble the Shield CAN on the PBA Be careful a damage of PBA ...

Page 22: ... change without notice 7 Level 2 Repair 7 4 This Document can not be used without Samsung s authorization 1 Assembles it from upper side at REAR assembling 2 Check Front REAR hook Screw 2 points of REAR 6001 002083 1 1 1 3 Kgf cm 5 6 ...

Page 23: ...SAMSUNG Proprietary Contents may change without notice 8 Level 3 Repair 8 1 This Document can not be used without Samsung s authorization 8 1 Block Diagram ...

Page 24: ...SAMSUNG Proprietary Contents may change without notice Level 3 Repair 8 2 This Document can not be used without Samsung s authorization 8 2 PCB Diagrams 8 2 1 Top ...

Page 25: ...SAMSUNG Proprietary Contents may change without notice Level 3 Repair 8 3 This Document can not be used without Samsung s authorization 8 2 1 Bottom ...

Page 26: ...el 3 Repair 8 4 This Document can not be used without Samsung s authorization 8 3 Flow 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 GND TP Test Point ...

Page 27: ...ce Level 3 Repair 8 5 This Document can not be used without Samsung s authorization Multi meter Checking the TP test point using Multi meter 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 ...

Page 28: ...t consumption is less than 60mA Change the PBA YES YES NO C400 4 5V Check the HDC400 YES NO C346 or C306 1 2V Re solder or change the U300 NO YES C340 2 8V Re solder or change the U307 NO YES Check the 38 4Mhz Clock at C259 Is it around 38 4Mhz Check the OSC100 U202 YES NO Check the C300 1 8V Change the PBA YES NO C302 or C311 1 8V C301 or C310 1 2V Re solder or change the U303 END YES NO ...

Page 29: ...SAMSUNG Proprietary Contents may change without notice Level 3 Repair 8 7 This Document can not be used without Samsung s authorization ...

Page 30: ...SAMSUNG Proprietary Contents may change without notice Level 3 Repair 8 8 This Document can not be used without Samsung s authorization ...

Page 31: ...SAMSUNG Proprietary Contents may change without notice Level 3 Repair 8 9 This Document can not be used without Samsung s authorization ...

Page 32: ... binary download does not work go to next step Initial Failure PC does not recognize the dongle No Yes Yes END Check the F401 F402 is there any signal not always 0V No Change the F401 F402 Yes Check the 12Mhz clock at C248 Is it around 12Mhz No Re solder or change the C248 C249 Re solder or change the OSC200 Yes Re solder the UCP200 UME200 using heat gun initial ok No Change the PBA Yes END ...

Page 33: ...SAMSUNG Proprietary Contents may change without notice Level 3 Repair 8 11 This Document can not be used without Samsung s authorization ...

Page 34: ...SAMSUNG Proprietary Contents may change without notice Level 3 Repair 8 12 This Document can not be used without Samsung s authorization ...

Page 35: ... Sim Part C411 is 1 8V or 3 0V Phone can t access SIM Card Re solder or change the SIM500 Check the SIM Card look over if it get damaged END No Yes Yes Yes No Re solder or change the U401 After Power ON Check SIM500 pin3 in a few seconds Yes No Confirm an another PBA After SIM card insert check the SIM500 pin4 signal goes high frequently Yes ...

Page 36: ...SAMSUNG Proprietary Contents may change without notice Level 3 Repair 8 14 This Document can not be used without Samsung s authorization ...

Page 37: ...y Contents may change without notice Level 3 Repair 8 15 This Document can not be used without Samsung s authorization CMW500 up at picture CMW500 connect using RF Cable between CMW500 RF Connector in board RF Connector ...

Page 38: ...RFS100 pin 1 TP C146 55dBm LTE Receiver Band LTE FDD 20 CELL POWER 50dBm Bandwithe 10MHz Modulation QPSK Frequency 806MHz NORMAL CONDITION catch the channel CHECK ANT contact U101 CHECK U101 change or re solder Check the UCP200 NO NO YES F101 CHECK pin 5 TP C140 60dBm F101 C140 re solder or change NO YES YES RFS100 C146 re solder or change NO YES ...

Page 39: ...dBm Bandwithe 10MHz Modulation QPSK Frequency 847MHz TX Power is too Low TX ON Target Power 23dBml TCXO CLOCK CHECK 38 4MHz OSC100 OSC100 re solder or change NO YES U100 Re solder or change0 NO YES YES Check the F100 C146 20dBm F101 C146 re solder or change NO Check the PAM100 L127 0dBm L126 25dBm RFS100 C147 22dBm RFS100 C147 change or re solder Antenna re solder or change NO YES ...

Page 40: ...SAMSUNG Proprietary Contents may change without notice Level 3 Repair 8 18 This Document can not be used without Samsung s authorization ...

Page 41: ...SAMSUNG Proprietary Contents may change without notice Level 3 Repair 8 19 This Document can not be used without Samsung s authorization ...

Page 42: ...SAMSUNG Proprietary Contents may change without notice Level 3 Repair 8 20 This Document can not be used without Samsung s authorization Rx Tx ...

Page 43: ...Contents may change without notice Level 3 Repair 8 21 This Document can not be used without Samsung s authorization 8 4 Service Schematics NC Point Top View NC U101 1 2 3 4 5 6 7 8 9 10 11 12 13 A B C D E F G H J K L M N ...

Page 44: ...AMSUNG Proprietary Contents may change without notice Level 3 Repair 8 22 This Document can not be used without Samsung s authorization UME200 1 2 3 4 5 6 7 8 9 10 11 12 13 14 A B C D E F G H J K L M N P ...

Page 45: ...ge without notice Level 3 Repair 8 23 This Document can not be used without Samsung s authorization UCP200 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 A B C D E F G H J K L M N P R T U V W Y AA AB AC AD AE AF AG ...

Page 46: ...PSK Binary Phase Shift Keying CA Conditional Access CDM Code Division Multiplexing C I Carrier to Interference DMB Digital Multimedia Broadcasting EN European Standard ES Elementary Stream ETSI European Telecommunications Standards Institute MPEG Moving Picture Experts Group PN Pseudo random Noise PS Pilot Symbol QPSK Quadrature Phase Shift Keying RS Reed Solomon SI Service Information TDM Time Di...

Page 47: ...3 TX_RF_VDD12 E2 GND E4 E5 GND GND D12 TX_CP D13 TX_RF_VDD25 D2 GND D4 GND D5 GND D6 BURN D7 D8 TX_BB_QM TX_LOCK B8 TX_LOIO B9 TXC_OUTM C1 SPI_WDAT C12 VDDM18 C13 TX_RF_VDD25 C2 TX_RF_VDD25 D1 D10 TX_CP_HOLD SPI_VDD12 B12 SPI_CK B13 TX_RF_VDD25 B2 GND B3 GND B4 TX_BB_VDD12 B5 TX_BB_IM B6 B7 TXA_OUTP TX_RF_VDD12 A5 TX_BB_IP A6 TX_BB_QP A7 TX_RBIAS A8 TX_VCO_VDD12 A9 TXC_OUTP B1 TX_LO_VDD12 B10 B11 ...

Page 48: ...O B13 USB_REXT_TXRTUNEIO B14 AG25 USIM_VCC_EN_GPIO39 DY_CAS AG26 AG27 NC TDI AG3 TDO AG4 AP_D14_ETM_TRDATA28 AG5 AP_D12_ETM_TRDATA26 AG6 AG7 ND_CLE_GPIO62 AG18 ST_A8 ST_A16 AG19 TX_VDREF_0IO AG2 ST_A22_GPIO71 AG20 ST_D1 AG21 ST_D6 AG22 ST_D11 AG23 ST_D12 AG24 AP_D3_ETM_TRDATA17_MII_TXEN AG10 ND_WE_GPIO67 AG11 ST_BLS1 AG12 AG13 ST_CS1 ST_RDY AG14 ST_A0 AG15 ST_A2 AG16 ST_A5 AG17 VDD_CIPACDAC AF3 SW...

Page 49: ... L312 ground C318 C351 TP_TCXO_EN R340 10 8 SW1 SW2 4 9 VIN _FPWM 7 RX_1 2V ground 5 AGND 3 AVIN 11 EN1 2 EN2 FB1 12 1 FB2 13 GND 6 PGND PGOOD U303 VDD2 8_PDET C345 1005 L305 L310 VDD_1 8V R327 VDD_1 2V VDD_3 3V C342 C302 ground 1005 L309 R303 C332 ground R341 C324 R300 R302 R329 13 PGND 6 10 PGOOD SW1 8 4 SW2 VIN 9 7 _FPWM U300 AGND 5 AVIN 3 EN1 11 EN2 2 12 FB1 FB2 1 GND ground ground ground RF_P...

Page 50: ...R ID 9 RXD 7 8 TXD VIN 6 VOUT 1 JTAGMAIN400 U400 2 CSLEW EN 4 5 GND GND 7 3 ILIMIT ground C403 VDD_1 8V ground ground C404 C412 VDD_1 8V VDD_3 3V VBUS_5 0V R400 C411 D403 TR400 1 3 2 TR402 1 3 2 TR401 1 3 2 3 4 4 R402 F401 1 1 2 2 3 1 2 2 3 3 4 4 C407 3 3 4 4 5 5 6 6 F402 1 HDC400 1 1 2 2 VDC_5 0V R405 9 13 G G 14 15 G G 16 VDC_5 0V 12 12 2 2 3 3 4 4 5 5 6 6 7 7 8 8 9 SIM500 1 1 10 10 11 11 C401 R...

Page 51: ...d or domestic law Samsung Electronics Co Ltd 2010 11 Rev 1 0 ⓒ Country Web Site North America service samsungportal com Latin America latin samsungportal com CIS cis samsungportal com Europe europe samsungportal com China china samsungportal com Asia asia samsungportal com Mideast Africa mea samsungportal com GSPN Global Service Partner Network ...

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