Samsung SGH-X490 service manual free download

File name Samsung SGH-X490 service manual.pdf

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 S