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Flow Chart of Troubleshooting
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10-39
10-16. PCS Receiver
RX ON
Cell Power : -60dBm
F100 Pin13
≥
-65dBm
Yes
Resolder RFS100, C113, L102
No
Yes
Check F100
pin9,pin11 = L
F100 5,6
≥
-68dBm
Check ANT Switch
control circuit
No
No
Resolder F100
U107
pin 20
≥
-70dBm
pin 21
≥
-70dBm
Yes
Yes
Resolder C112, C114, L103
No
Yes
U107 pin11,12,16,
29,32,33,36
≥
2.8V
U107 pin 4,5,6,7
≥
0.2Vp_p
Check & Resolder
C128, C134, C137
No
No
Resolder U107
Yes
Yes
Check UCP200
END