Service Manuals, User Guides, Schematic Diagrams or docs for : Samsung GSM Samsung SGH-C140i service manual
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GSM TELEPHONE
SGH-C140i
GSM TELEPHONE CONTENTS
1. Specification
2. Exploded View and Parts List
3. Flow Chart of Troubleshooting
4. Array course control
5. Block Diagrams
6. PCB Diagrams
7. MAIN Electrical Parts List
8. Reference data
9. Safety Precautions
10. Product Function
Contents
1. Specification
1-1. GSM General Specification .......................................................................................1-1
1-2. GSM Tx Power Class ...............................................................................................1-2
2. Exploded View and Parts List
2-1. Cellular phone Exploded View ..................................................................................2-1
2-2. Cellular phone Part list .............................................................................................2-2
2-3. Disassembly ...............................................................................................................2-4
2-4. Assembly ....................................................................................................................2-6
2-5. LCD KIT .....................................................................................................................2-8
3. Flow Chart of Troubleshooting
3-1. Baseband
3-1-1. Power ON .............................................................................................................9-1
3-1-2. Initial ......................................................................................................................9-4
3-1-3. Sim Part ................................................................................................................9-6
3-1-4. Charging Part ........................................................................................................9-8
3-1-5. Microphone Part ....................................................................................................9-9
3-1-6. Speaker Part .......................................................................................................9-11
3-1-7. LCD ......................................................................................................................9-13
3-1-8. Camera ................................................................................................................9-16
3-2. RF
3-2-1. GSM Receiver.......................................................................................................3-18
3-2-2. DCS Receiver.......................................................................................................3-19
3-2-3. PCS Receiver.......................................................................................................3-20
3-2-4. GSM Transmitter...................................................................................................3-23
3-2-5. DCS Transmitter...................................................................................................3-24
3-2-6. PCS Transmitter...................................................................................................3-25
3-2-7. Bluetooth Part .....................................................................................................3-27
4. Array course control
Software Downloading
4-1. Downloading Binary Files ..........................................................................................4-2
4-2. Pre-requsite for Downloading ....................................................................................4-2
4-3. S/W Downloader Program .........................................................................................4-3
Contents
5. MAIN Electrical Parts List
6. Block Diagrams
7. PCB Diagrams
8. Reference data
9. Safety Precautions
9-1. Repair Precaution ......................................................................................................9-1
9-2. ESD(Electrostatically Sensitive Devices) Precaution ...............................................9-2
10. Product Function
10-1. Main Function .........................................................................................................10-1
1. Specification
1-1. GSM General Specification
EG SM 9 00 DCS1 800
Ph ase 2 Phase 1
F req. Ban d[MHz] 8 80~915 1710~1 785
Uplin k/Down link 9 25~960 1805~1 880
ARF CN ra nge 0~1 24 & 9 75~102 3 512~8 85
T x/Rx spacing 45 M Hz 95 MHz
Mo d. Bit r ate/ 270 .833 kb ps 2 70.83 3 kbps
Bit Period 3 . 692 u s 3.69 2 us
Ti me Slo t Pe rio d/Fr am e 5 76.9 u s 576. 9 us
Per iod 4. 615 ms 4 .615 ms
Modula tion 0 .3 G M SK 0.3 G MSK
M S Power 33 d Bm ~5 dBm 3 0 dBm ~0 dBm
Powe r Class 5 pcl ~ 19 pcl 0 pcl ~ 15 pcl
Se nsitivity -10 2 dBm - 100 dBm
TDMA M ux 8 8
Cell Radiu s 35 Km 2 Km
1-1
Speclflcation
1-2. GSM Tx Power Class
TX Power TX Power
GSM900 DCS1800
control level control level
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