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Flow Chart of Troubleshooting
9-2. RF
9-2-1. GSM Rx
CONTINOUS RX ON
RF INPUT : 62CH
AMP : -50dbm
Normal condition
catch the
channel ?
Yes
Check PAM100
pin 12 ≥ -65
dbm ?
Yes
Check PAM100
pin 16 ≥ -65
dbm ?
Yes
Check U101
pin 21,22 ≥ -
65dBm ?
Yes
Check U101
pin 13 = 2.9V
Yes
Resolder or change
UCP300
No
Check ANT,
No
Resolder or change
CON100, L103, C100, L102, C101, L104
No
Resolder or change
No
Resolder or change
No
Resolder or change
9-12
R111,R100,C131,L110
PAM100
F100, F101
UCP200
1
2
3
4
5
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