Samsung SGH-X481 service manual free download

File name Samsung SGH-X481 service manual.pdf

GSM TELEPHONE SGH-X481 GSM TELEPHONE CONTENTS 1. Specification 2. Flow Chart of Troubleshooting 3. Exploded View and Parts List 4. Electrical Parts List 5. PCB Diagrams 6. Block Diagrams 7. Disassembly and Assembly instructions 1. SGH-X481 Specification 1-1. GSM General Specification GSM900 E G S M 9 00 DCS1800 PC S1 90 0 Ph ase 1 Ph ase 2 Ph ase 1 Freq. Ban d [M Hz ] 89 0~ 91 5 88 0~ 91 5 1 71 0~ 1 78 5 18 50 ~1 91 0 Upl in k/Downl in k 93 5~ 96 0 92 5~ 96 0 1 80 5~ 1 88 0 19 30 ~1 99 0 0 ~ 1 24 & A RF C N ra n g e 1 ~ 1 24 51 2~8 85 5 12 ~8 10 9 75 ~ 10 23 Tx/R x sp aci ng 45 MHz 45 MHz 95 MHz 8 0M Hz Mod. Bit rat e/ 270.833kbp s 2 70 . 8 33 k b ps 270.833kbp s 27 0. 83 3kb p s Bit Period 3.692us 3.692us 3.692us 3. 69 2u s Tim e Sl ot 576.9us 576.9us 576.9us 57 6. 9u s P eri od /F rame 4. 61 5m s 4 .6 15 m s 4. 61 5ms 4. 61 5ms Peri od Modu la t ion 0. 3GM SK 0. 3GM S K 0. 3GM SK 0 .3 GMS K MS Power 3 3d B m ~ 13 dB m 3 3d B m ~ 5 d B m 3 0d B m ~ 0 d Bm 30 d Bm ~ 0d B m P ow er Cl a ss 5 p cl ~ 15 p cl 5pcl ~ 19pcl 0pcl ~ 15pcl 0pcl ~ 15pcl S en sitivi t y -1 02 d B m - 10 2d B m -1 00 d B m - 1 00 dBm TDM A Mu x 8 8 8 8 Cell Ra d iu s 35 Km 35 Km 2 Km - 1-1 SGH-X481 Speclflcation 1-2. GSM Tx Power Class TX Power TX Power TX Power GSM900 DCS1800 PCS1900 control level control level control level 5 33