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Fl o w Chart of Troubl e shooti n g
9-2. RF
9-2-1. GSM Rx
CONTINOUS RX ON
RF INPUT : 190CH
AMP : -50dbm
Normal condition
catch the channel ?
Yes
Check PAM100
pi n #12 ≥ -65
dbm ?
Yes
Check PAM100
pin #16 ≥ -65
dbm ?
Yes
Check UCD101
pin #31,32
≥ -65dBm ?
Yes
Check UCD101
pin#13 = 2.9V?
Yes
Resolder or change
UCP200
No
Check ANT,
No
Check and resolder or change
RFS100, C101, L104, C111, L103, C199
No
Resolder or change
No
Check and resolder or change
C130, F101, L114, C106, C107
No
Resolder or change
9-12
C126, L102
PAM100
UCD101
1
2
3
4
5
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