Samsung B3740 Service Manual

GSM TELEPHONE

GT-B3740

GSM TELEPHONE

CONTENTS

Safety Precautions

Specification

Product Function

Exploded View and Parts list

MAIN Electrical Parts List

Level1Repair

Disassembly and Assembly

7. Instructions

Chart of Troubleshooting

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.

Safety Precautions

Repair Precaution

1-1.

Repair in Shield Box, during detailed tuning. Take specially care of tuning or test, because

―

specipicty of cellular phone is sensitive for surrounding interference(RF noise).

Be careful to useakind of magnetic object or tool, because performance of parts is damaged by

―

the influence of magnetic force.

Surely useastandard screwdriver when you disassemble this product, otherwise screw will be

―

worn away.

Useathicken twisted wire when you measure level.

―

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 and weak in heat.

―

Surely tune on/off while using AC power plug, becausearepair of battery charger is dangerous

―

when tuning ON/OFF PBA and Connector after disassembling charger.

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.

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Safety Precautions

ESD(Electrostatically Sensitive Devices) Precaution

1-2.

Several semiconductor may be damaged easily by static electricity. Such parts are called by ESD

Electrostatically Sensitive Devices), for example IC,BGA chip etc. Read Precaution below.

(

You can prevent from ESD damage by static electricity.

Remove static electricity remained 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 most of ESD are packed by box and

―

aluminum plate to have conductive power,they are prevented from static electricity.

You must maintain electric contact between ESD and place due to be set up until ESD is

―

connected completely to the proper place oracircuit board.

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Specification

LTE General Specification

2-1.

LTE

FDD 20

Freq. Band[MHz]

Uplink/Downlink

ARFCN range

Tx/Rx spacing -41MHz

Mod. Bit rate/

Bit Period

Time Slot Period/

Frame Period

Modulation

MS Power 23±2

Power Class CLASS 3

832~862

791-821

DL 6150~6449

UL 24150~24449

Max UL 50Mbps

DL 100Mbps

0.5ms

UL :QPSK

DL :QPSK

16QAM

64QAM

Sensitivity -100dBm @BW10MHz

TDMA Mux -

Cell Radius -

2-1

Operation Instruction and Installation

Main Function

LTE

•

USB2.0 Highspeed

•

Plug&Play(PnP) supported

•

Macintosh,Window XP,Vista,7 supported

•

800

MHz

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Exploded View and Parts List

Cellular phone Exploded View

4-1.

QFR01

QAN02

QMP01

QRE01

QBC00

QBC01

QCR94

QCR67

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Exploded View and Parts List

Cellular phone Parts list

4-2.

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

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MAIN Electrical Parts List

SEC CODE Design LOC Description

0403-001688

0406-001267

0504-001141

0601-001905

0801-003022

1003-002367

1108-000344

1201-003187

1203-004602

1203-005263

1203-005512

1203-005521

1203-005580

1203-005812

1203-005865

1203-006301

1203-006679

1205-003902

1205-004037

1209-001879

1404-001165

1405-001298

2007-000140

2007-000143

2007-000146

2007-000148

2007-000152

2007-000162

2007-001298

2007-001305

2007-001316

2007-007014

2007-007095

2007-007100

2007-007107

D403 DIODE-ZENER

D400,D401 DIODE-TVS

TR400,TR401,TR402 TR-DIGITAL

LED500 LED

U202 IC

U401 IC

UME200 MEMORY

U100 IC

U400 IC

U307 IC

U310 IC

U308 IC

U305 IC

U312 IC

U304,U309 IC

U300,U303,U306 IC

U311 IC

UCP200 IC

U101 IC

U102 IC

V100 THERMISTOR

D402,D404 VARISTOR

R406 R-CHIP

R400 R-CHIP

R402 R-CHIP

R230,R231,R232,R300 R-CHIP

R222,R223 R-CHIP

R313,R323,R324,R329 R-CHIP

R340,R343,R403 R-CHIP

R102 R-CHIP

R404 R-CHIP

R128 R-CHIP

R202 R-CHIP

R407 R-CHIP

R234 R-CHIP

R302,R325,R326 R-CHIP

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Main Electrical Parts List

SEC CODE Design LOC Description

2007-007313

2007-007315

2007-007317

2007-007334

2007-007538

2007-007875

2007-008040

2007-008043

2007-008045

2007-008046

2007-008052

2007-008055

2007-008211

2007-008354

2007-008401

2007-008477

2007-008516

2007-008531

2007-008548

2007-008582

2007-008739

2007-008806

2007-008812

2007-009157

2007-009793

2007-009964

2007-010202

2203-000233

2203-000254

2203-000386

2203-000438

2203-000489

2203-000585

R101 R-CHIP

R224 R-CHIP

R143 R-CHIP

R303,R327 R-CHIP

R100 R-CHIP

R309,R328,R330,R341 R-CHIP

R240 R-CHIP

R136,R137 R-CHIP

R107,R109,R133 R-CHIP

R130 R-CHIP

R342 R-CHIP

R316,R317 R-CHIP

R108,R110 R-CHIP

R311,R355 R-CHIP

R233 R-CHIP

R116,R120 R-CHIP

R245,R246 R-CHIP

R106,R254 R-CHIP

R132 R-CHIP

R405 R-CHIP

R312,R314 R-CHIP

R138 R-CHIP

R344 R-CHIP

R225,R226 R-CHIP

R123,R131 R-CHIP

R227 R-CHIP

R144,R241,R242,R243 R-CHIP

R244 R-CHIP

C140,C144,C146,C154 C-CER,CHIP

C178,C179,C182,C403 C-CER,CHIP

C120,C121,C243,C246 C-CER,CHIP

C251,C252 C-CER,CHIP

C108,C134,C135,C136 C-CER,CHIP

C168,C173,C244,C245 C-CER,CHIP

C175 C-CER,CHIP

C147,C160,C162 C-CER,CHIP

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Main Electrical Parts List

SEC CODE Design LOC Description

2203-000627

2203-000812

2203-001259

2203-002687

2203-005281

2203-005395

2203-005480

2203-006120

2203-006194

2203-006379

2203-006423

2203-006462

2203-006562

2203-006681

2203-006824

2203-006839

C301,C302,C306,C319 C-CER,CHIP

C320,C345 C-CER,CHIP

C259 C-CER,CHIP

C248,C249 C-CER,CHIP

C167 C-CER,CHIP

C126 C-CER,CHIP

C111,C122 C-CER,CHIP

C166 C-CER,CHIP

C109,C110 C-CER,CHIP

C169,C176,C205,C211 C-CER,CHIP

C214,C216,C220,C225 C-CER,CHIP

C226,C228,C230,C233 C-CER,CHIP

C153 C-CER,CHIP

C100,C103,C104,C113 C-CER,CHIP

C115,C116,C128,C130 C-CER,CHIP

C133,C138,C139,C180 C-CER,CHIP

C181 C-CER,CHIP

C170 C-CER,CHIP

C202,C203,C241,C242 C-CER,CHIP

C300,C303,C305,C309 C-CER,CHIP

C312,C314,C318,C324 C-CER,CHIP

C329,C330,C331,C332 C-CER,CHIP

C333,C340,C341,C342 C-CER,CHIP

C343,C350,C351,C352 C-CER,CHIP

C400,C404,C411 C-CER,CHIP

C250,C401 C-CER,CHIP

C102,C402 C-CER,CHIP

C107,C127,C161,C163 C-CER,CHIP

C204,C206,C207,C208 C-CER,CHIP

C209,C210,C212,C213 C-CER,CHIP

C215,C217,C218,C219 C-CER,CHIP

C221,C222,C223,C224 C-CER,CHIP

C227,C229,C231,C232 C-CER,CHIP

C234,C235,C247,C260 C-CER,CHIP

C261,C262,C263,C264 C-CER,CHIP

C265,C355,C409,C410 C-CER,CHIP

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Main Electrical Parts List

SEC CODE Design LOC Description

2203-006841

2203-006890

2203-007143

2203-007279

2203-007342

2203-007474

2203-007701

2203-007775

2703-001178

2703-001733

2703-001734

2703-001737

2703-001748

2703-001751

2703-001752

2703-001786

2703-002309

2703-002901

2703-003502

2703-003686

2703-003892

2703-003913

2703-003916

2801-004466

2801-004543

2809-001350

2901-001496

2904-001979

2910-000112

3301-001789

3301-001946

3301-001956

3705-001731

C101,C105,C112,C114 C-CER,CHIP

C117,C129,C131,C132 C-CER,CHIP

C310,C311,C323,C327 C-CER,CHIP

C346,C347 C-CER,CHIP

C151 C-CER,CHIP

C106,C313,C328,C348 C-CER,CHIP

C200,C201 C-CER,CHIP

C137,C142 C-CER,CHIP

C412 C-CER,CHIP

C353,C354 C-CER,CHIP

L114 INDUCTOR-SMD

L120 INDUCTOR-SMD

L105,L110,L113,L119 INDUCTOR-SMD

L100,L104 INDUCTOR-SMD

L127 INDUCTOR-SMD

L126 INDUCTOR-SMD

L107,L122 INDUCTOR-SMD

L108 INDUCTOR-SMD

L101 INDUCTOR-SMD

L116,L118 INDUCTOR-SMD

L314 INDUCTOR-SMD

L301,L305,L313 INDUCTOR-SMD

L302,L303 INDUCTOR-SMD

L304 INDUCTOR-SMD

L112 INDUCTOR-SMD

OSC201 CRYSTAL-SMD

OSC200 CRYSTAL-SMD

OSC100 OSCILLATOR-VCTCXO

F401,F402 FILTER-EMI SMD

F103 FILTER-SAW

F101,F102 DUPLEXER-SAW

L306,L308,L309,L310 BEAD-SMD

L311,L312 BEAD-SMD

L124,L125,L307 BEAD-SMD

L400 BEAD-SMD

RFS100,RFS101 CONNECTOR-COAXIAL

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Main Electrical Parts List

SEC CODE Design LOC Description

3709-001447

3711-007173

3712-001348

3722-002976

4709-001948

SIM500 CONNECTOR-CARD EDGE

HDC401 HEADER-BOARD TO BOARD

L106,L111 CONNECTOR

HDC400 PLUG-USB

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(Samsung Portal) for the most recent version of the product's part list.

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Level

S/W Download

6-1.

Repair

6-1-1.

6-1-2.

Pre-requsite for S/W Downloading

Downloader Program

•

GT-B3740 LTE DONGLE

•

Binary files

•

Driver Installation

Auto Installation

■

Connect your modem toaUSB port of your Computer. The install wizard

(C2xDownloader.exe)

windows appears on the Computer

Click[Next] to continue.

Click[Install] to start the installation.

When the installation is finished, click[Finish]. The icon will be added to

the desktop.

Manual installation

■

If the Install Wizard doesn't start automatically, follow the steps below.

Ensure that your modem is attached toaUSB port of your Computer.

Run Explorer on your Computer.

Find[My Computer]

Double-click[Mobile_Broadband], then, the Install Wizard will Start.

The Install Wizard may not work because of user settings in the Computer or

☞

Devices with Removable Storage]

[

→

unknown causes.

Manual installation

■

If you want to download the program from the web, follow the steps below.

Run Internet Web Browser.

Go to http://fus.samsungmobile.com/GT-B3740/Vodafone/Install.html

Click[Download for Windows SW Package]. The file Download window will

appear.

Click[Open]. The Install Wizard will start

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Level1Repair

6-1-3.

S/W Downloader Program

Load the binary download program by executing the

■

C2xDownloader.exe

Connect the dongle toaUSB port of your PC.

enter this file.

←

Select the Binary in sequence of Boot, Loader, LTE, ISO.

(_.

but

/_.

ldr

/_.

mac

/_.

iso)

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Level1Repair

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Level1Repair

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