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SGH-X481 Flow Chart of Troubleshooting
2-16
2-2-3. PCS Rx
CONTINOUS RX ON
RF INPUT : 660CH
AMP : -50dbm
Normal condition
catch the
channel ?
Check ANT,
C820,C821,L801
No
1
Yes
Check U900
pin 12
≥
-65
dbm ?
2
Resolder or change
CON901, C903, L903, L904, C901, C902
No
Yes
Check U900
pin 18
≥
-65
dbm ?
Resolder or change
U900
No
3
Yes
Check U801
pin 19,20
≥
-
65dBm ?
4
No
Resolder or change
F900
Yes
Check U801
pin 13 = 2.9V
No
Resolder or change
U100
5
Yes
Resolder or change
U600
Summary of Contents for SGH-X481
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