Samsung SGH-X461, Service Manual

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SGH-X461 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, R101,R102,U909,L103
No
1
Yes
Check U102
pin 12 ≥ -65
dbm ?
2
Resolder or change
CON900, L903, C902, C901, C903, L904
No
Yes
Check U102
pin 16 ≥ -65
dbm ?
Resolder or change
U102
No
3
Yes
Check U801
pin 19,20 ≥ -
65dBm ?
4
No
Resolder or change
F900
Yes
Check U801
pin 13 = 2.8V
No
Resolder or change
U100
5
Yes
Resolder or change
U600