Samsung SGH-E790 service manual, samsung service manuals schematy serwisowki
[ Pobierz całość w formacie PDF ]
GSM TELEPHONE
SGH-E790
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
1-3. EDGE TX Power Level .............................................................................................1-3
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. Initial .............................................................................................................3-4
3-1-3. SIM Part .......................................................................................................3-6
3-1-4. Microphone Part ...........................................................................................3-8
3-1-5. Speaker Part_1(MP3, SPEAKER PHONE) ..............................................3-10
3-1-6. Speaker Part_2(RECEIVER) .....................................................................3-13
3-1-7. Charging Part .............................................................................................3-14
3-2. RF ......................................................................................................................3-13
3-2-1. EGSM RX ..................................................................................................3-17
3-2-2. DCS RX .....................................................................................................3-19
3-2-3. PCS RX ......................................................................................................3-21
3-2-4. EGSM TX ...................................................................................................3-22
3-2-5. DCS/PCS TX .............................................................................................3-24
Contents
4. Array course control
4-1. Downloading Binary Files ......................................................................................4-1
4-2. Pre-requsite for Downloading ................................................................................4-1
4-3. S/W Downloader Program .....................................................................................4-2
4-4. How to Download ...................................................................................................4-2
5. Block Diagrams
5-1. RF Solution Block Diagram ......................................................................................5-1
5-2. Base Band Solution Block Diagram .........................................................................5-2
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
EGSM900
DCS1800
PCS1900
Freq. Band[MHz]
Uplink/Downlink
880~915
925~960
1710~1785
1805~1880
1850~1910
1930~1990
ARFCN range
0~124&
975~1023
512~885
512~810
Tx/Rx spacing
45 MHz
95 MHz
80 MHz
GPRS
270.833 Kbps
3.692 us
270.833 Kbps
3.692 us
270.833 Kbps
3.692 us
Mod. Bit rate/
Bit Period
812.5 Kbps
3.692 us
812.5 Kbps
3.692 us
812.5 Kbps
3.692 us
EDGE
Time Slot Period/Frame
Period
576.9 us
4.615 ms
576.9 us
4.615 ms
576.9 us
4.615 ms
GPRS
0.3 GMSK
0.3 GMSK
0.3 GMSK
Modulation
EDGE
8 PSK
8 PSK
8 PSK
GPRS
33 dBm~5 dBm
30 dBm~0 dBm
30 dBm~0 dBm
MS Power
EDGE
27~5 dBm
26~0 dBm
26~0 dBm
G P R S
5~19(class4)
0~15(class1)
0~15(class1)
Power Level
EDGE
8~19(class E2)
2~15(class E2)
2~15(class E2)
Sensitivity
-102 dBm
-100 dBm
-102 dBm
TDMA Mux
8
8
8
Cell Radius
35 Km
2 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
control
level
EGSM900
TX
Power
control
level
DCS1800
TX
Power
control
level
PCS1900
5
33±2 dBm
0
30±3 dBm
0
30±3 dBm
6
31±2 dBm
1
28±3 dBm
1
28±3 dBm
7
29±2 dBm
2
26±3 dBm
2
26±3 dBm
8
27±2 dBm
3
24±3 dBm
3
24±3 dBm
9
25±2 dBm
4
22±3 dBm
4
22±3 dBm
10
23±2 dBm
5
20±3 dBm
5
20±3 dBm
11
21±2 dBm
6
18±3 dBm
6
18±3 dBm
12
19±2 dBm
7
16±3 dBm
7
16±3 dBm
13
17±2 dBm
8
14±3 dBm
8
14±3 dBm
14
15±2 dBm
9
12±4 dBm
9
12±4 dBm
15
13±2 dBm
10
10±4 dBm
10
10±4 dBm
16
11±2 dBm
11
8±4 dBm
11
8±4 dBm
17
9±2 dBm
12
6±4 dBm
12
6±4 dBm
18
7±2 dBm
13
4±4 dBm
13
4±4 dBm
19
5±2 dBm
14
2±5 dBm
14
2±5 dBm
15
0±5 dBm
15
0±5 dBm
1-2
SAMSUNG Proprietary-Contents may change without notice
This Document can not be used without Samsung's authorization
[ Pobierz całość w formacie PDF ]