Samsung SGH-B300 Service Manual

GSM TELEPHONE

SGH-B300

GSM TELEPHONE

CONTENTS

Safety Precautions

1. Specification

2. Product Function

3. Array course control

4. Exploded View and Parts list

5. MAIN Electrical Parts List

6. Disassembly and Assembly

7.

Instructions

Block Diagrams

8. PCB Diagrams

9. Chart of Troubleshooting

10. Reference data

11.

GSPN(Global Service Partner Network)

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

This Service Manual isaproperty of Samsung Electronics Co.,Ltd. Any unauthorized use of Manual can be punished under applicable International and/or domestic law.

Africa mea.samsungportal.com

&

Samsung Electronics Co.,Ltd.

ⓒ

2008. 04.

Rev.1.0

Safety Precautions

1.

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 manetic 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.

A

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 disassembing 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 easilly 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

2.

GSM General Specification

2-1.

EGSM 900

Phase 2

Freq. Band[MHz]

Uplink/Downlink

ARFCN range 0~124 & 975~1023 512~885

Tx/Rx spacing 45 MHz 95 MHz

Mod. Bit rate/

Bit Period

Time Slot Period/Frame

Period

Modulation 0.3 GMSK 0.3 GMSK

MS Power 33 dBm~5 dBm 30 dBm~0 dBm

880~915 925~960

270.833 kbps

3.692 us

576.9 us

4.615 ms

DCS1800

Phase 1

1710~1785 1805~1880

270.833 kbps

3.692 us

576.9 us

4.615 ms

Power Class 5

Sensitivity -102 dBm -100 dBm

TDMA Mux 8 8

Cell Radius 35 Km 2 Km

pcl

~19

pcl

2-1

pcl

0

~15

pcl

Speclflcation

GSM Tx Power Class

2-2.

TX Power

control level

5 33±2

6 31±2

7 29±2

8 27±2

9 25±2

10 23±2

11 21±2

12 19±2

13 17±2

14 15±2

15 13±2

16 11±3

17 9±3

18 7±3

19 5±3

GSM900

dBm

TX Power

control level

0 30±3

1 28±3

2 26±3

3 24±3

4 22±3

5 20±3

6 18±3

7 16±3

8 14±3

9 12±4

10 10±4

11 8±4

12 6±4

13 4±4

14 2±5

DCS1800

dBm

15 0±5

2-2

dBm

Product Function

3.

Main Function

Speed dial

-

Phonebook memory status

-

SDN(Service Dialling Numbers)

-

Network services

-

Read SMS or MMS messages

-

Send SMS or MMS messages

-

Voicemail

-

Broadcast message

-

MMS profile

-

Wap browser

-

FM Radio

-

Java Games

-

Menu shortcuts

-

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Array course control

4.

(0.4

Test Jig(GH80-0

M:GH

39-0089

Test Cable

A,

2

1.5

0865

M:GH

A)

39-00895A)

RF Test Cable(GH39-00

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985

A)

Array course control

Software Downloading

Downloading Binary Files

4-1.

Three binary files for downloading B300

• B300XXYY.s3:Main source code binary.

–

Pre-requsite for Downloading

4-2.

Downloader Program(OptiFlash.exe

•

B300 Mobile Phone

•

)

.

Data Cable

•

Binary files

•

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S/W Downloader Program

4-3.

Load the binary download program by executing the

1.

Array course control

“OptiFlash.exe”

Select the

2.

Choose hardware platform for the downloader file setting.

Options

“

”->“

Settings

”->“

Generic

”->“

Specify hardware platform”.

Set the everything else as the default values which are shown below

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Array course control

Select the

3.

COM port

when the download cable is connected

Up to twelve ports are supported. Additionally you can select the maximum transfer speed OptiFlash will use to communicate with the phone. However, OptiFlash will useaslower speed if either the PC’sor the phone’sserial hardware is incapable of handling the selected speed

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Select the

4.

“Flash&Verify

”->“

Array course control

Browse” Set the directory path and choose the latest s/w binary, for example B300XXYY.s3

for the downloader binary setting.

”,

“

Make sure that not to change the reserved memory regions.

In case of B108 the reserved memory regions are

-0x00008000 – 0x0001

ffff

4-5

:

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Array course control

Click

5.

Before pressing‘Flash’button, push the button

( press‘Flash

“OK”

Downloader will upload the binary file as below for the downloading.

button then press

’.)

“Flash”.

and‘END’at the same time.

‘*’

Then

When downloading is finished successfully, there is

6.

After finishing downloading, Certain memory resets should be done to guarantee the

7. normal performance.

Confirm the downloaded version name and etc.

8.

*#1111#

Full Reset

:

*2767*3855#

:

All is well”message.

a“

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5. Exploded View and Parts List

5-1. Cellular phone Exploded View

QRF03

QFR01

QKP01

QFU01

QME16 QLC01

QFL01

QCR06

QLC02 QSP01 QMO01

QMW02

QSC01

QME01

QCR12

QMP01 QMI01

QSH01

QAN02

QRE01

QCR87

QBA01

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QBA00

Exploded View and Parts List

5-2. Cellular phone Parts list

Design LOC Description SEC CODE

QAN02 INTENNA-SGHB300 GH42-01534A QBA00 PMO COVER-BATTERY GH72-46670A QBA01 INNER BATTERY PACK-750MAH,BLK, GH43-02483A QCR06 SCREW-MACHINE 6001-001155 QCR12 SCREW-MACHINE 6001-001530 QCR87 SCREW-TAPPING 6002-001412

QFL01 ASSY CASE-LOWER GH98-07688A QFR01 ASSY CASE-FRONT GH98-07687A QFU01 ASSY CASE-UPPER GH98-07689A QKP01 ASSY KEYPAD-(XEF/DGA) GH98-07671A QLC01 LCD-MODULE SGHB110L GH07-01241A QLC02 ELA UNIT-SGHB300 LCD MODULE SV GH96-03067A QME01 DOME SHEET-SGHB300 GH59-05506A QME16 UNIT-SGHB300 CON TO CON GH59-05509A

QMI01 MICROPHONE-ASSY-SGHB300 GH30-00467A

QMO01 MOTOR DC-SGHZ130 GH31-00154C

QMP01 A/S ASSY-PBA MAIN GH82-02949A(Turkey) QMP01 PBA MAIN-SGHB300S GH92-04670A

QMW02 PMO WINDOW-MAIN GH72-46665A

QRE01 ASSY CASE-REAR GH98-07686A QRF03 PMO COVER-EAR GH72-46664A QSC01 TAPE-COVER SCREW LOWER GH74-38101A QSH01 ASSY BRACKET-SHIELD CAN GH98-07685A QSP01 SPEAKER 3001-002344

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MAIN Electrical Parts List

6.

SEC CODE Design LOC Discription

0403-001547

0406-001241

0504-000168

0601-002361

0801-003206

1001-001428

1001-001488

1009-001020

1108-000111

1201-002180

1201-002731

1203-003897

1203-005005

1204-002700

1204-002783

1205-003098

1205-003412

1404-001165

1405-001082

1405-001108

ZD502 DIODE-ZENER

ZD500 DIODE-TVS

ZD501 DIODE-TVS

Q300 TR-DIGITAL

LED600 LED

LED601 LED

LED602 LED

LED603 LED

LED604 LED

LED605 LED

U101 IC-CMOS LOGIC

U402 IC-ANALOG MULTIPLEX

U404 IC-ANALOG MULTIPLEX

U500 IC-ANALOG MULTIPLEX

U502 IC-ANALOG MULTIPLEX

U501 IC-ANALOG SWITCH

U201 IC-HALL E FFECT S/W

UME200 IC-MCP

U401 IC-AUDIO AMP

PAM100 IC-POWER AMP

U300 IC-POWER SUPERVISOR

U301 IC-BATTERY

U400 IC-TUNER

U403 IC-SOUND GENERATOR

U100 IC-TRANSCEIVER

UCP200 IC-MODEM

TH200 THERMISTOR-NTC

VR500 VARISTOR

VR501 VARISTOR

VR502 VARISTOR

VR503 VARISTOR

VR601 VARISTOR

VR602 VARISTOR

VR603 VARISTOR

VR604 VARISTOR

VR612 VARISTOR

VR600 VARISTOR

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Main Electrical Parts List

SEC CODE Design LOC Discription

1405-001108

1405-001121

1405-001200

2007-000138

2007-000140

2007-000143

2007-000148

2007-000151

2007-000156

2007-000157

2007-000160

2007-000161

VR605 VARISTOR

VR200 VARISTOR

VR400 VARISTOR

VR401 VARISTOR

R443 R-CHIP

R444 R-CHIP

R501 R-CHIP

R518 R-CHIP

R507 R-CHIP

R508 R-CHIP

R509 R-CHIP

R510 R-CHIP

R511 R-CHIP

R513 R-CHIP

R514 R-CHIP

R515 R-CHIP

R421 R-CHIP

R422 R-CHIP

R101 R-CHIP

R104 R-CHIP

R306 R-CHIP

R307 R-CHIP

R414 R-CHIP

R415 R-CHIP

R409 R-CHIP

R410 R-CHIP

R201 R-CHIP

R203 R-CHIP

R309 R-CHIP

R431 R-CHIP

R435 R-CHIP

R438 R-CHIP

R512 R-CHIP

R600 R-CHIP

R433 R-CHIP

R400 R-CHIP

R404 R-CHIP

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