Samsung SGH-L770 Service Manual

efrcom

UMTS TELEPHONE

SGH-L770

UMTS 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. 05

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.

1-2

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Specification

2.

GSM/DCS1800/PCS1900/WCDMA2100 General Specification

2-1.

EGSM 900

Phase 2

Freq. Band[MHz]

Uplink/Downlink

ARFCN range 0~124 & 975~1023 512~885 512~810

Tx/Rx spacing 45

Mod. Bit rate/

Bit Period

Time Slot

Period/Frame

Period

modulation 0.3

880~915
925~960

270.833

3.692

576.9

4.615

GMSK

MHz

kbps
us

us

ms

DCS1800

Phase 1

1710~1785
1805~1880

MHz

95

270.833

3.692

576.9

4.615

GMSK

0.3

kbps
us

us

ms

PCS1900

1850~1910
1930~1990

80

270.833

3.692

576.9

4.615

GMSK QPSK

0.3

MHz

kbps
us

us

ms

WCDMA

2100

1920~1980
2110~2170

9612~9888

10562~10838

MHZ

190

Mcps

4.096

ms

10

MS Power 33

Power Class 5

Sensitivity -102

TDMA Mux 8 8 8 -

Cell Radius 35

dBm~5 dBm

pcl

~19

dBm

Km

pcl

dBm~0 dBm

30

pcl

0

~15

-100

2

dBm

Km

pcl

dBm~0 dBm

30

pcl

0

~15

-100

pcl Power class

dBm

--

24

-50

-106.7

dBm~

dBm

3

dBm

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Specification

GSM TX power class

2-2.

TX Power

control level

GSM850/

EGSM900

533±2

631±2

729±2

827±2

925±2

10 23±2

11 21±2

dBm

dBm

dBm

dBm

dBm

dBm

dBm

TX Power

DCS1800

control level

030±3

128±3

226±3

324±3

422±3

520±3

618±3

dBm

dBm

dBm

dBm

dBm

dBm

dBm

TX Power

control level

PCS1900

030±3

128±3

226±3

324±3

422±3

520±3

618±3

dBm

dBm

dBm

dBm

dBm

dBm

dBm

12 19±2

13 17±2

14 15±2

15 13±2

16 11±3

17 9± 3

18 7±3

19 5±3

dBm

dBm

dBm

dBm

dBm

dBm

dBm

dBm

716±3

814±3

912±4

10 10±4

11 8±4

12 6±4

13 4±4

14 2±5

dBm

dBm

dBm

dBm

dBm

dBm

dBm

dBm

716±3

814±3

912±4

10 10±4

11 8±4

12 6±4

13 4±4

14 2±5

dBm

dBm

dBm

dBm

dBm

dBm

dBm

dBm

15 0±5

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dBm

15 0±5

dBm

Product Function

3.

Main Function

MP3 Music player

-

SOS message

-

FM radio support

-

DRM OMA V2.0 support

-

Bluetooth CSR V2.0 support

-

External memory support

-

camera support

2M

-

RF support band

-

GSM

:

900 +

DCS1800+PCS

1900 +

WCDMA2100(band1)

3-1

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Array course control

4.

Test Jig(GH80-03307A)

RF Test Cable

GH39-00

(

Power Supply Cable DATA CABLE

397

A)

(GH39-01106A /

Test Cable

GH39-00

(

GH39-01104A

922A)

Serial Cable

)

TA

GH44-0

(

1702

A)

4-1

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Software Downloading

Downloading Binary Files

4-1.

Three binary files for downloading L770

ㆍ

L770XXYY.fls:Main source code binary

-

Pre-requsite for Downloading

4-2.

river Program(

D

ㆍ

Downloader Program(

ㆍ

L770 Mobile Phone

ㆍ

Data Cable

ㆍ

Binary files

ㆍ

FlashUsb.sys)

FlashTool_E2.exe)

Array course control

4-2

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Array course control

USB Driver Installation Guide

4-3.

4-3

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Array course control

4-4

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Array course control

Flash Tool Usage Guide

4-4.

4-5

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Array course control

4-6

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Array course control

4-7

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Array course control

When downloading is finished successfully, there is

Success"message.

a"

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

Confirm the downloaded version name and etc.

:

*#1234#

Full Reset

:

*2767*3855#

4-8

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Exploded View and Parts List

5.

5-1.

QFU01

QCA02

QAR01

QMO01

QLC01

Cellular phone Exploded View

QVO01

QKP02

QME02

QRF03

QSD01

QCR57

QCR05

QMP01

QFR04

QIF01

QFR01

QCK01

QKP01

QCR47

QME01

QPC01

QFL01

QCR05

QHI01

QCA01

QSP01

QRF01

QAN06

QSH01

QMI03

QAN02

QRE01

QCR06

QBA01

QBA00

5-1

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Exploded View and Parts List

5-2.

Cellular phone Parts list

Design LOC Discription SEC CODE

QAN02 INTENNA-SGH-L770 GH42-01477A

QBA00 PMO COVER-BATT(ORANGE) GH72-46853B

QBA01 INNER BATTERY PACK-880MAH,BL GH43-02666A

QCA01 CAMERA MODULE-SGH-L770 GH59-05708A

QCA02 KEY FPCB-SIDE CAMERA KEY GH59-05392A

QCK01 PMO KEY-CAMERA GH72-45847B

QCR05 SCREW-MACHINE

QCR72 SCREW-MACHINE

QFL01 ASSY CASE-SLIDE LOWER GH98-07227B

QHI01 ASSY HINGE-MODULE GH98-07230A

QHI04 PMO COVER-HINGE CAP GH72-45849A

QKP02 ASSY CASE-SUB KEYPAD(OPEN) GH98-07231A

QLC01 LCD-MODULE(SGH-L770) GH07-01244A

6001-001478

6001-002051

QMP01 PBA MAIN-SGH_L770 GH92-04256A

QPC01 FPC-SLIDE FPCB GH41-02038A

QRE01 ASSY CASE-REAR GH98-07232B

QRF01 ASSY COVER-RF GH98-07840B

QSH04 ASSY COVER-SHIELD FRONT GH98-08144A

QSH05 ASSY COVER-SHIELD CAN REAR

QSP01 ASSY ETC-SPK/MOT MODULE GH59-05475A

QVK01 KEY FPCB-SIDE VOLUME KEY GH59-05391A

QVO01 PMO KEY-VOLUME GH72-45846B

QFU01 ASSY CASE-SLIDE UPPER(OPEN/BLK GH98-07224B

QMW01 ASSY COVER-WINDOW MAIN(OPEN) GH98-07225A

QFR01 ASSY CASE-FRONT GH98-07228B

QIF01 PMO COVER-IF GH72-45844B

QSD01 PMO COVER-MICRO SD GH72-45845B

B

GH98-08968A

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MAIN Electrical Parts List

6.

SEC CODE Design LOC Discription

GH42-01477A ANT100, ANT102, BT_ANT,BTGND INTENNA-SGH-L770

GH59-05391A L701 KEY FPCB-SIDE VOLUME KEY

GH59-05392A L702 KEY FPCB-SIDE CAMERA KEY

0403-001427

0403-001547

0404-001172

0404-001172

0404-001250

0404-001250

0406-001237

0504-000168

0504-000168

0504-001113

0504-001151

0801-003013

0801-003031

0801-003140

1009-001035

1009-001035

1108-000157

1201-002195

1201-002423

1201-002455

1201-002559

1201-002597

1203-004339

1203-004518

1203-004906

1203-005028

1203-005118

1204-002746

1205-003099

1205-003235

1205-003325

1404-001165

1405-001082

1405-001082

ZD405 DIODE-ZENER

ZD601 DIODE-ZENER

D401 DIODE-SCHOTTKY

D402 DIODE-SCHOTTKY

D403 DIODE-SCHOTTKY

D404 DIODE-SCHOTTKY

ZD603 DIODE-TVS

Q400 TR-DIGITAL

Q401 TR-DIGITAL

Q501 TR-DIGITAL

Q200 TR-DIGITAL

U102 IC-CMOS LOGIC

U103 IC-CMOS LOGIC

U204 IC-CMOS LOGIC

U701 IC-HALL EFFECT S/W

U703 IC-HALL EFFECT S/W

U301 IC-MCP

U504 IC-AUDIO AMP

PAM101 IC-POWER AMP

PAM201 IC-POWER AMP

Q202 IC-MMIC AMP

U502 IC-AUDIO AMP

U607 IC-MULTI REG.

U403 IC-BATTERY

U401 IC-BATTERY

U402 IC-VOL. DETECTOR

U702 IC-MULTI REG.

U503 IC-TUNER

U201 IC-TRANSCEIVER

U101 IC-DATA COMM./GEN.

U302 IC-DATA COMM./GEN.

TH201 THERMISTOR-NTC

VR601 VARISTOR

VR603 VARISTOR

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