Service Manuals, User Guides, Schematic Diagrams or docs for : Samsung GSM Samsung SGH-E490 service manual
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GSM TELEPHONE
SGH-E490
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 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 ...............................................................................................................2-9
2-4. Assembly ..................................................................................................................2-11
3. Chart of Troubleshooting
3-1. Baseband ............................................................................................................3-1
3-1-1. Power ON .....................................................................................................3-1
3-1-2. System Initial ................................................................................................3-5
3-1-3. SIM Part .......................................................................................................3-8
3-1-4. Charging Part .............................................................................................3-10
3-1-5. Microphone Part .........................................................................................3-12
3-1-6. Speaker Part ..............................................................................................3-15
3-1-7. Camera Part ..............................................................................................3-18
3-1-8. LCD .............................................................................................................3-21
3-2. RF ......................................................................................................................3-13
3-2-1. EGSM Rx ...................................................................................................3-23
3-2-2. DCS Rx ......................................................................................................3-24
3-2-3. PCS Rx ......................................................................................................3-25
3-2-4. EGSM Tx ...................................................................................................3-27
3-2-4. DCS & PCS Tx .........................................................................................3-28
3-2-6. BLUETOOTH ..............................................................................................3-30
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 General Specification
GSM900 EG SM 900 DCS1 800
PCS190 0
Phase 1 Phase 2 Phase 1
Fr eq. Band [MHz] 890~9 15 880~ 915 1710~1 785 18 50~191 0
Uplink/ Downlink 935~9 60 925~ 960 1805~1 880 19 30~199 0
0~ 124 &
ARFCN ran ge 1~12 4 512~8 85 5 12~810
975~ 1023
Tx/Rx spacin g 45MHz 45MHz 95MHz 80MHz
Mod. Bit ra te/ 270.8 33kbps 270. 833kbps 2 70.83 3kbps 27 0.833 kbps
Bi t Peri od 3.69 2us 3.6 92us 3.69 2us 3 .692u s
Tim e Slot
576. 9us 576. 9us 576. 9us 5 76.9u s
Per iod/ Fr ame
4 .615ms 4.615 ms 4 .615ms 4. 615ms
Period
Mod ulat ion 0.3G MSK 0.3 GMSK 0.3G MSK 0 .3G M SK
MS Power 3 3dBm~1 3dBm 33dBm~5dBm 3 0dBm~0 dBm 30 dBm~0d Bm
Power Cl ass 5pcl ~ 1 5pcl 5pcl ~ 19pcl 0pcl ~ 15pcl 0pcl ~ 15pcl
Sensitivity - 102dBm - 102dBm - 100dBm -10 0dBm
TDMA M ux 8 8 8 8
Cell Radius 35Km 35 Km 2Km -
1-1
Speclflcation
1-2. GSM Tx Power Class
TX Power TX Power TX Power
GSM900 DCS1800 PCS1900
control level control level control level
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