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GSM TELEPHONE
SGH-C120




GSM TELEPHONE CONTENTS


1. Specification
2. Flow Chart of Troubleshooting

3. Exploded Views and Parts List

4. Electrical Parts List

5. PCB Diagrams

6. Block Diagrams
This Service Manual is a property of Samsung Electronics Co.,Ltd. Samsung Electronics Co.,Ltd.
Any unauthorized use of Manual can be punished under applicable
International and/or domestic law. Code No.: GH68-08501A
2005. 11. Rev.1.0
1. SGH-C120 Specification

1-1. GSM General Specification

GSM900 EGSM 900 DCS1800
Phase 1 Pha se 2 Phase 1

Freq. Ban d [M Hz ] 89 0~ 91 5 88 0~ 91 5 1 71 0~ 1 78 5
Upl in k/Downl in k 93 5~ 96 0 92 5~ 96 0 1 80 5~ 1 88 0

0 ~ 1 24 &
A RF C N ra n g e 1 ~ 1 24 51 2~8 85
9 75 ~ 10 23

Tx/Rx spaci ng 45 MHz 45 MHz 95 MHz


Mod. Bit rat e/ 270.833kbp s 2 70 . 8 33 k b ps 270.833kbp s
Bit Period 3.692us 3.692us 3.692us

Tim e Sl ot
576.9us 576.9us 576.9us
P eri od /F rame
4. 61 5m s 4 .6 15 m s 4. 61 5ms
Peri od

Modu lat ion 0. 3GM SK 0. 3GM S K 0. 3GM SK


M S Power 3 3d B m ~ 13 dBm 33dBm~5dBm 3 0d B m ~ 0 d Bm

P ow e r Cl a ss 5pcl ~ 15pcl 5pcl ~ 19pcl 0pcl ~ 15pcl

S e nsi ti vit y -102dBm - 10 2d B m -100dBm

TDM A Mu x 8 8 8

Cell Radiu s 35 Km 35 Km 2Km




1-1
SAMSUNG Proprietary-Contents may change without notice
This Document can not be used without Samsung's authorization
SGH-C120 Specification




1-2. GSM TX power class

TX Power TX Power
GSM900 DCS1800
control level control level

5 33