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Flow Chart of Troubleshooting
7-26
14. DCS Receiver
MODULE1 Pin7
>= -65dBm
Resolder CN100, C102
END
No
Yes
RX ON
RF input : CH center freq : +67.7kHz
Amp : -50dBm
Check MODULE1
pin9,pin10,pin12 = L
U100 pin3,4
>= -68dBm
U100 pin
H8,J8,H7,J7
>= 1V
U100
pin C1 >= -70dBm
pin D1 >= -70dBm
Check ANT Switch
control circuit
Resolder MODULE1
Resolder C104, C103, L102, L103
R110, C126, C129
>=2.7V
Check & Resolder
U100, R113
RF26MHz, RF PSU Part
Resolder U100
Yes
Yes
Yes
Yes
Yes
Yes
No
No
No
No
No
Check U200