Flow Chart of Troubleshooting
9-2-2. DCS Rx
CONTINOUS RX ON
RF INPUT : 698CH
AMP : -50dbm
Normal condition
catch the
channel ?
Yes
Check U100
pin 12 ≥ -65
dbm ?
Yes
Check U100
pin 18 ≥ -65
dbm ?
Yes
Check U101
pin 19,20 ≥ -
65dBm ?
Yes
Check U101
pin 13 = 2.9V
Yes
Resolder or change
UCP201
No
Check ANT,
No
Resolder or change
RFS601, C110,L106,L103,L104
No
Resolder or change
No
Resolder or change
F101,C111,C113,L108
No
Resolder or change
9-12
R102, R105, R135
U100
UCP300
1
2
3
4
5