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