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GSM TELEPHONE
SGH-X490
GSM TELEPHONE CONTENTS
1. Specification
2. Circuit Description
3. Exploded Views and Parts List
4. Electrical Parts List
5. Block Diagrams
6. PCB Diagrams
7. Flow Chart of Troubleshooting
This Service Manual is a property of Samsung Electronics Co.,Ltd. Samsung Electronics Co.,Ltd. December. 2005
Any unauthorized use of Manual can be punished under applicable Printed in Korea.
International and/or domestic law.
Code No.: GH68-08926A
BASIC.
1. Specification
1-1. GSM General Specification
GSM900 EG SM900 DCS1800 PC1900
Ph ase 1 Ph ase 2 Ph ase 1 Ph ase 1
Freq. Band[MHz] 890~915 880~915 1710~1785 1850~1910
Upl ink/Downlink 935~960 925~960 1805~1880 1930~1990
ARFCN range 1~124 0~124 & 512~885 512~810
915~1023
Tx/Rx spacing 45MHz 45MHz 95MHz 80MHz
Mod. Bit r ate/ 270.833kbps 270.833kbps 270.833kbps 270.833kbps
Bi t Pe r iod 3.692us 3.692us 3.692us 3.692us
Time Sl ot 576.9us 576.9us 576.9us 576.9us
P e r i o d / F r a me Pe r i o d 4.615ms 4.615ms 4.615ms 4.615ms
Modulation 0.3GMSK 0.3GMSK 0.3GMSK 0.3GMSK
MS Powe r 33dBm~5dBm 33dBm~5dBm 30dBm~0dBm 30dBm~0dBm
Powe r Class 5pcl ~ 19pcl 5pcl ~ 19pcl 0pcl ~ 15pcl 0pcl ~ 15pcl
Sensi tivi ty -102dBm -102dBm -100dBm -100dBm
TDMA Mux 8 8 8 8
Ce ll Ra dius 35Km 35Km 2Km 2Km
1- 1
SAMSUNG Proprietary-Contents may change without notice
This Document can not be used with out Samsung's authorization
Specification
1-2. GSM TX power class
TX Power TX Power TX Power
GSM900 DCS1800 PCS1900
control level control level control level
5 33