Samsung SGH-C270 Manuel utilisateur

GSM TELEPHONE

SGH-C270

1. Safety Precautions

2. Specification

3. Product Function

4. Array course control

5. Exploded View and Parts list

6. MAIN Electrical Parts List

7. Disassembly and Assembly

Instructions

8. Block Diagrams

9. PCB Diagrams

10. Chart of Troubleshooting

11. Reference data

GSM TELEPHONE CONTENTS

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1. Safety Precautions

1-2

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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 akind of magnetic object or tool,

because performance of parts is damaged by the influence of manetic force.

●Surely use astandard screwdriver when you disassemble this product,

otherwise screw will be worn away.

●Use athicken twisted wire when you measure level.

Athicken 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 arepair 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

1-2

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1-2. ESD(Electrostatically Sensitive Devices) Precaution

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 or acircuit board.

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2. Specification

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2-1

EGSM 900 DCS1800

Freq. Band[MHz]

Uplink/Downlink

880~915

925~960

1710~1785

1805~1880

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

Tx/Rx spacing 45MHz 95MHz

Mod. Bit rate/

Bit Period

270.833kbps

3.692us

270.833kbps

3.692us

Time Slot Period/Frame

Period

576.9us

4.615ms

576.9us

4.615ms

Modulation 0.3GMSK 0.3GMSK

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

Power Class 4

(max +33dBm)

(max +30dBm)

Sensitivity -102dBm -100dBm

TDMA Mux 8 8

Cell Radius 35Km 2Km

2-1. GSM General Specification

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Specification

2-2

TX Power

control level GSM900

533±2

dBm

631±2

dBm

729±2

dBm

827±2

dBm

925±2

dBm

10 23±2 dBm

11 21±2 dBm

12 19±2 dBm

13 17±2 dBm

14 15±2 dBm

15 13±2 dBm

16 11±3 dBm

17 9±3dBm

18 7±3 dBm

19 5±3 dBm

TX Power

control level DCS1800

0 30±3 dBm

1 28±3 dBm

2 26±3 dBm

3 24±3 dBm

4 22±3 dBm

5 20±3 dBm

6 18±3 dBm

7 16±3 dBm

8 14±3 dBm

9 12±4 dBm

10 10±4 dBm

11 8±4dBm

12 6±4 dBm

13 4±4 dBm

14 2±5 dBm

15 0±5 dBm

2-2. GSM TX power class

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3. Operation Instruction and Installation

3-1

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Main Function

•S20 Pin TA

•No Java

•WAP 2.0

•Dual band(900/1800MHz)

•16

Poly Ringtone

•Non Camera

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4. Array course control

4-1

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4-1. Software Adjustments

Test Cable (GH39-01160A)

Test Jig (GH99-36900A)

RF Test Cable (GH39-00985A) Adapter (GH99-38251A)

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Array course control

4-2

This Document can not be used without Samsung's authorization

4-2. Software Downloading

4-2-1. Downloading Binary Files

•2binary files for downloading C270

-C270HH1.cla

-C270HH1.tfs

4-2-2. Pre-requsite for Downloading

•Downloader Program(Divo Downloader for SEC v01)

•SGH-C270 Mobile Phone

•JIG BOX

•Test Cable

•Serial Cable

•Binary files

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Array course control

4-3

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4-2-3. S/W Downloader Program

1. Load the binary download program by executing the “Divo Downloader for SEC v01”.

2. Select the Port, Baud Rate and Mode.

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Array course control

4-4

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3. Select the binary fileswhat you want to download

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