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Flow Chart of Troubleshooting
7-32
7-17. PCS Receiver
Module1 pin8
>= -65dBm
Resolder CON1, C103
No
Yes
RX ON
RF input : 661CH
Amp : -50dBm
Check Module1
pin9= H
pin10, pin12 = L
Module1 pin5, pin6
>= -65dBm
U100
B1 >= -70dBm
A1 >= -70dBm
Check ANT Switch
control circuit
Resolder Module1
Resolder C115, L109, L110
Yes
Yes
Yes
No
No
No
END
U100 H7,H8,J7,J8
>= 1V
Check U100
J2,A6,B6,A9,E9
>=2.7V
Check & Resolder
U100, U709
RF26MHz, RF PSU Part
Resolder U100
Yes
Yes
Yes
No
No
Check U200