Text preview for : Samsung SGH-C300 service manual.pdf part of Samsung SGH-C300 service manual Samsung GSM Samsung SGH-C300 service manual.pdf
Back to : Samsung SGH-C300 service | Home
GSM TELEPHONE
SGH-C300
GSM TELEPHONE CONTENTS
1. Specification
2. Exploded View and Parts list
3. 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/CDMA 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 Parts list ............................................................................................2-2
2-3. Disassembly ...............................................................................................................2-4
2-4. Assembly ....................................................................................................................2-6
3. Flow Chart of Troubleshooting
3-1. Baseband ....................................................................................................................3-1
3-1-1. Power ON .............................................................................................................3-1
3-1-2. Initial ......................................................................................................................3-5
3-1-3. SIM Part ................................................................................................................3-8
3-1-4. Microphone Part ..................................................................................................3-10
3-1-5. Receiver Part ......................................................................................................3-12
3-1-6. Speaker Part .......................................................................................................3-12
3-2. RF .............................................................................................................................3-15
3-2-1. EGSM Rx ............................................................................................................3-15
3-2-2. DCS Rx ...............................................................................................................3-17
3-2-3. EGSM TX ............................................................................................................3-19
3-2-4. DCS TX ...............................................................................................................3-21
4. Array course control
4-1. Downloading Binary Files ......................................................................................4-2
4-2. Pre-requsite for Downloading ................................................................................4-2
4-3. S/W Downloader Program .....................................................................................4-3
5. Block Diagrams
6. PCB Diagrams
Contents
7. MAIN Electrical Parts List
8. Reference data
8-1. Reference Abbreviate ..............................................................................................8-1
9. Safety Precautions
9-1. Repair Precaution ......................................................................................................9-1
9-2. ESD(Electrostaically Sensitive Devices) Precaution ................................................9-2
10. Product Function
1. Specification
1-1. GSM General Specification
G S M 9 00 EGSM 900 DCS1 800
Ph ase 1 Ph ase 2 Phase 1
F r eq. Ban d[MHz] 89 0~9 15 88 0~9 15 171 0~ 178 5
Up lin k/D own lin k 93 5~9 60 92 5~9 60 180 5~ 188 0
0~ 124 &
ARF CN r a nge 1 ~12 4 51 2~ 885
975 ~1 023
T x/ Rx s p ac in g 45 M H z 45 M H z 95 M H z
Mod. Bit r ate/ 270 .8 33 Kb ps 270 .8 33 Kb ps 270 .8 33 Kb ps
Bit Period 3.692 us 3.692 us 3.692 us
T ime Slot Peri od/F r ame 576 .9 us 576 .9 us 576 .9 us
Period 4.615 ms 4.615 ms 4.615 ms
Mod ula ti on 0 .3 GMSK 0 .3 GMSK 0 .3 GMSK
MS Power 33 dBm~ 1 3 dB m 33 dB m~ 5 dB m 30 dB m~ 0 dBm
Powe r Cla s s 5 pcl ~ 15 pcl 5 pcl ~ 19 pcl 0 pcl ~ 15 pcl
Sensi ti vity - 10 2 dBm -10 2 dBm - 10 0 dBm
TDMA Mux 8 8 8
C ell Rad ius 35 Km 35 Km 2 Km
1-1
Specification
1-2. GSM TX power class
TX Power GSM900 TX Power DCS1800
control level control level
5 33