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Flow Chart of Troubleshooting
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9-25
9-16. PCS Receiver
RX ON
RF input : CH center freq
Amp : -50dBm
Check ANT Switch
control circuit
Change
or Resolder
MODULE200
Resolder CN201, C209
MODULE200 pin3,4
>= -65dBm
MODULE200 Pin8
>= -65dBm
Yes
No
Yes
Check
MODULE200
pin9=L,pin12=L
No
No
Yes
Yes
U100 Pin35,36
>= -70dBm
No
Resolder L101, L103, L102
Yes
Check U100
pin4 >= 4.0V
pin22, 28 >= 2.7V
U100 Pin 6,7,8,9
>= 1V
No
Check & Resolder
RF PSU part
Check & Resolder
U100, RF 26MHz part,
R100, R101
R110,R113,R114,
R115 >= 1V
Yes
Check U300
END