Text preview for : Samsung SGH-E840 service manual.pdf part of Samsung SGH-E840 service manual Samsung GSM Samsung SGH-E840 service manual.pdf
Back to : Samsung SGH-E840 service | Home
GSM TELEPHONE
SGH-E840
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 ....................................................................................................................2-8
3. Chart of Troubleshooting
3-1. Baseband ............................................................................................................3-1
3-1-1. Power ON .....................................................................................................3-1
3-1-2. System Initial ................................................................................................3-6
3-1-3. SIM Part .......................................................................................................3-8
3-1-4. Charging Part .............................................................................................3-10
3-1-5. Microphone Part .........................................................................................3-13
3-1-6. Speaker Part ..............................................................................................3-16
3-1-7. Receiver Part .............................................................................................3-20
3-1-8. Camera Part ..............................................................................................3-22
3-1-9. LCD .............................................................................................................3-26
3-2. RF ......................................................................................................................3-13
3-2-1. EGSM Receiver .........................................................................................3-30
3-2-2. EGSM Transmitter .....................................................................................3-31
3-2-3. DCS Receiver ............................................................................................3-32
3-2-4. DCS Transmitter ........................................................................................3-33
3-2-5. PCS Receiver .............................................................................................3-34
3-2-6. PCS Transmitter .........................................................................................3-35
3-2-7. UMTS Receiver ..........................................................................................3-40
3-2-8. UMTS Transmitter ......................................................................................3-41
3-2-9. BLUETOOTH ..............................................................................................3-45
Contents
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
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/WCDMA General Specification
EG SM 900 EGSM 900 DCS1800
PCS1 900
Phase 2 Ph ase 2 Ph ase 1
Fr eq. Band[ MHz] 824~849 880~915 1710~1785 1850~1910
Uplink/Downlink 869~894 925~960 1805~1880 1930~1990
0~124 &
ARFCN r ange 128~251 512~885 512~810
975~1023
Tx/ Rx sp acing 45 MHz 45 MHz 95 MHz 80 MHz
Mod. Bit rat e/ 270.833 kbps 270.833 kbps 270.833 kbps 270.833 kbps
Bit Per iod 3.692 us 3.692 us 3.692 us 3.692 us
T im e S lot
576.9 us 576.9 us 576.9 us 576.9 us
Per iod/ Fra me
4.615 ms 4.615 ms 4.615 ms 4.615 ms
Period
Modu lation 0.3 GMSK 0.3 GMSK 0.3 GMSK 0.3 GMSK
MS Power 33 dBm~5 dBm 33 dBm~5 dBm 30 dBm~0 dBm 30 dBm~0 dBm
Power Cl ass 5 pcl ~ 19 pcl 5 pcl ~ 19 pcl 0 pcl ~ 15 pcl 0 pcl ~ 15 pcl
Sensitivity -102 dBm -102 dBm -100 dBm -100 dBm
T DM A M u x 8 8 8 8
Cell Radius 35 Km 35 Km 2 Km -
1-1
SAMSUNG Proprietary-Contents may change without notice
This Document can not be used without Samsung's authorization
Specification
1-2. GSM TX power class
TX Power EGSM850 TX Power TX Power
DCS1800 PCS1900
control level EGSM900 control level control level
5 33