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GSM TELEPHONE
SGH-i750
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
8. Disassembly and
Assembly instructions
1. Specification
1-1. GSM General Specification
GSM900 EGSM 900 DCS1800
PCS1900
Phas e 1 Phas e 2 Phas e 1
Fr eq. Band[MHz] 890~915 880~915 1710~1785 1850~1910
Uplink/ Downli nk 935~960 925~960 1805~1880 1930~1990
0~124 &
ARFCN r ange 1~124 512~885 512~810
975~1023
Tx/ Rx s paci ng 45MHz 45MHz 95MHz 80MHz
Mod. Bit r ate 270.833kbps 270.833kbps 270.833kbps 270.833kbps
/ Bit Pe r iod 3.692us 3.692us 3.692us 3.692us
T ime Slot Period 576.9us 576.9us 576.9us 576.9us
/ F rame Peri od 4.615ms 4.615ms 4.615ms 4.615ms
Modulati on 0.3GMSK 0.3GMSK 0.3GMSK 0.3GMSK
MS Power 33dBm~5dBm 33dBm~5dBm 30dBm~0dBm 30dBm~0dBm
Power Cl a ss 5pcl ~ 19pcl 5pcl ~ 19pcl 0pcl ~ 15pcl 0pcl ~ 15pcl
Sensit ivit y - 102dBm -102dBm - 100dBm - 100dBm
TDMA Mux 8 8 8 8
Cell Radius 35Km 35Km 2Km -
1-1
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Specification
1-2. GSM TX power class
TX Power TX Power TX Power
GSM900 DCS1800 PCS1900
control level control level control level
5 33