Samsung Service Manual SGH-E810.pdf

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Samsung SGH-E810 Service manual. www.s-manuals.com
GSM TELEPHONE
SGH-E810
SERVICE Manual
GSM TELEPHONE
CONTENTS
1. Specification
2. Flow Chart of Troubleshooting
3. Exploded Views and Parts List
4. Electrical Parts List
5. Block Diagrams
6. PCB Diagrams
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1. SGH-E810 Specification
1. GSM General Specification
GSM900
Phase 1
EGSM900
Phase 2
DCS1800
Phase 1
Freq. Band[MHz]
Uplink/Downlink
890~915
935~960
880~915
925~960
1710~1785
1805~1880
ARFCN Range
1~124
0~124 &
975~1023
512~885
Tx/Rx Spacing
45MHz
45MHz
95MHz
Mod. Bit Rate/
Bit Period
270.833KHz
3.692us
270.833KHz
3.692us
270.833KHz
3.692us
Time Slot Period
/Frame Period
576.9us
4.615ms
576.9us
4.615ms
576.9us
4.615ms
Modulation
0.3GMSK
0.3GMSK
0.3GMSK
MS Power
33dBm~13dBm 33dBm~13dBm 33dBm~13dBm
Power Class
5pcl~15pcl
5pcl~19pcl
0pcl~15pcl
Sensitivity
-102dBm
-102dBm
-100dBm
TDMA Mux
8
8
8
Cell Ridius
35Km
35Km
2Km
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SGH-E810 Specification
2. GSM TX power class
TX Power
Control Level
GSM900
TX Power
Control Level
DCS1800
5
33±2dBm
0
30±3dBm
6
29±2dBm
1
28±3dBm
7
27±2dBm
2
26±3dBm
8
25±2dBm
3
24±3dBm
9
23±2dBm
4
22±3dBm
10
21±2dBm
5
20±3dBm
11
19±2dBm
6
18±3dBm
12
17±2dBm
7
16±3dBm
13
15±2dBm
8
14±3dBm
14
13±2dBm
9
12±4dBm
15
11±2dBm
10
10±4dBm
16
9±3dBm
11
8±4dBm
17
7±3dBm
12
6±4dBm
18
5±3dBm
13
4±4dBm
19
3±3dBm
14
2±5dBm
15
0±5dBm
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2. SGH-E810 Flow Chart of Troubleshooting
1. Power ON
'Power ON' Does not work
Check the current consumption
Current consumption
≥100mA ?
NO
Down load again
YES
Check the V bat. voltage
Voltage ≥ 3.3V ?
NO
Charge the Battery
YES
Check the pin of U100
pin #11 ≥ 2.8V ?
NO
Check U100 and C114
YES
pin #39 and #33 = 2.8V
NO
YES
Pin #9=1.8V?
NO
Check U100 and C113
YES
Check the clock signal
at pin #3 of OSC400
Freq.=13MHz,Vrms 300mV
NO
Check the clock generation
circuit (OSC400, U405 pin#4)
YES
Check the Initial operation
END
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SGH-E810 Flow Chart of Troubleshooting
2. System Initial
Initial Failure
The pin #9 of U100 = 1.8V
and pin #11 of U100=2.8V?
NO
Check the U100
(If it has some problem,
it has to be replaced.)
YES
Is the pin #19 of U100
" Low --> High" ?
NO
Check the U100
(If it has some problem,
it has to be replaced.)
YES
There is 32.768KHz wave
form at the C327, C328 ?
NO
Check the U304
YES
Is the pin #25 of U100
is High ?
NO
Check the U300
YES
The voltage is "High"
at the C107,C109,C110 ?
NO
Check the U100
YES
LCD Display OK ?
NO
Check the LCD part
YES
Sound operation OK ?
NO
Check the Audio part
YES
END
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