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Mobilchips
SGH-E860V Flow Chart of Troubleshooting
2-
28
2-2-4. GSM Tx
Check F100
pin 3 : about
2~3 dbm?
Check F100
pin 4 : 2.8V ?
Check and
change
CN100
,
C109
Yes
Check and
change
U200
,
U401
No
CONTINUS TX ON CONDITION
TX POWER DAC : 554 CODE
APPLIED
CH : 62ch
RBW : 100KHz
VBW : 100KHz
SPAN : 10MHz
REF LEV : 10dBm
ATT : 20dB
U100 pin4 :
about 4~5dbm?
Yes
No
Yes
U100 pin
2,6,17 :
3.7V ?
F100
check & change
No
Battery,
U401
check & change
Yes
U100 pin 20 :
1.2V ?
No
U401
check
Yes
U100 pin18 :
3V ?
No
U401
check
U101 pin 9 : 2.
8V ?
U100
change or resolder
U401
change or resolder
No
Yes
U101
change or resolder
Yes
U100 pin 11
:
about -5dbm?
No
Yes
No
1
2
2
3
4
5
6
7
8
Summary of Contents for SGH-E860V
Page 7: ...Mobilchips SGH E860V Flow Chart of Troubleshooting 2 4 1 2 2 3 4 5 ...
Page 15: ...Mobilchips SGH E860V Flow Chart of Troubleshooting 2 12 1 2 3 4 5 LCD PCB ...
Page 20: ...Mobilchips SGH E860V Flow Chart of Troubleshooting 2 17 1 4 2 3 ...
Page 25: ...Mobilchips SGH E860V Flow Chart of Troubleshooting 2 22 1 2 3 4 5 ...
Page 27: ...Mobilchips SGH E860V Flow Chart of Troubleshooting 2 24 1 2 3 4 5 ...
Page 29: ...Mobilchips SGH E860V Flow Chart of Troubleshooting 2 26 1 2 3 4 5 ...