Samsung Service Manual SGH-I710.pdf

GSM TELEPHONE

SGH-i710

GSM TELEPHONE

CONTENTS

1. Safety Precautions

2. Specification

3. Operation Instruction and

Installation

4. Array course control

5. Exploded View/Disassembly

and Assembly Instructions

6. MAIN Electrical Parts List

7. Block Diagrams

8. PCB Diagrams

9. Flow Chart of Troubleshooting

10. Reference data

1. Safety Precautions

1-1. Repair Precaution

― 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 use a kind of magnetic object or tool, because performance of parts is damaged by

the influence of magnetic force.

― Surely use a standard screwdriver when you disassemble this product, otherwise screw will be

worn 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 and weak in heat.

― Surely tune on/off while using AC power plug, because a repair 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.

1-1

SAMSUNG Proprietary-Contents may change without notice

This Document can not be used without Samsung's authorization

S afety Precautions

1-2. ESD(Electrostatically Sensitive Devices) Precaution

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 or a circuit board.

1-2

SAMSUNG Proprietary-Contents may change without notice

This Document can not be used without Samsung's authorization

2. Specification

2-1. GSM General Specification

GSM850

Phase 1

EGSM 900

Phase 2

DCS1800

Phase 1

PCS1900

Freq.

Band[MHz]

Uplink/Downlink

824~849

869~894

880~915

925~960

1710~1785

1805~1880

1850~1910

1930~1990

ARFCN range

128~251

0~124 &

975~1023

512~885

512~810

Tx/Rx spacing

45MHz

95MHz

80MHz

Mod. Bit rate/

Bit Period

270.833kbps

3.692us

270.833kbps

3.692us

270.833kbps

3.692us

270.833kbps

3.692us

Time Slot

Period/Frame

Period

576.9us

4.615ms

576.9us

4.615ms

576.9us

4.615ms

576.9us

4.615ms

Modulation

0.3GMSK

MS Power

33dBm~5dBm 33dBm~5dBm 30dBm~0dBm 30dBm~0dBm

Power Class

5pc l ~ 19pc l

5pcl ~ 19pcl

0pcl ~ 15pcl

Sensitivity

-102dBm

-100dBm

TDMA Mux

Cell Radius

35Km

2Km

2-1

Specification

2-2. GSM Tx Power Class

TX Power

control

level

GSM850

TX Power

control

level

EGSM900

TX Power

control

level

DCS1800

TX Power

control

level

PCS1900

33±2 dBm

30±3 dBm

31±2 dBm

28±3 dBm

29±2 dBm

26±3 dBm

27±2 dBm

24±3 dBm

25±2 dBm

22±3 dBm

23±2 dBm

20±3 dBm

21±2 dBm

18±3 dBm

19±2 dBm

16±3 dBm

17±2 dBm

14±3 dBm

15±2 dBm

12±4 dBm

13±2 dBm

10±4 dBm

11±3 dBm

8±4 dBm

9±3dBm

6±4 dBm

7±3 dBm

4±4 dBm

5±3 dBm

2±5 dBm

0±5 dBm

2-2

Plik z chomika:

Inne pliki z tego folderu:

Inne foldery tego chomika: