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Flow Chart of Troubleshooting
10-2. RF
10-2-1. 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 UCD101
pin 21,22 ≥ -
65dBm ?
Yes
Check UCD101
pin 13 = 2.9V
Yes
Resolder or change
UCP201
No
Check ANT,
No
Resolder or change
RFS100,C102,C199,L100,L101,L111
No
Resolder or change
No
Resolder or change
F101,C105,C109,L104
No
Resolder or change
10-11
C104,C126,L102,L113
PAM100
UCD107
1
2
3
4
5
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