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Flow Chart of Troubleshooting
9-28
9-18. PCS Receiver
RX ON
RF input : CH center freq : +67.7kHz
Amp : -50dBm
Yes
F100 Pin13
>= -65dBm
No
Resolder RFS100,C103
Yes
F100 5,6
>= -68dBm
Check F100 pin11 =
L ,pin9 = H
No
No
Check ANT Switch
control circuit
Yes
Yes
Resolder F100
U100
pin 20 >= -70dBm
pin 21 >= -70dBm
No
Resolder C101, C102, L103
Yes
U100 pin 11,29,36
>=2.8V
U100 pin 4,5,6,7
>= 1V
No
No
Check & Resolder
U100
RF26MHz, RF PSU Part
Yes
Yes
Resolder U100
Check UCP200
END