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Flow Chart of Troubleshooting
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9-33
9-17. PCS Receiver
RX ON
Cell Power : -60dBm
F101 Pin13
≥ -65dBm
Yes
Resolder RFS100, C110, L106
No
Yes
Check F101
pin9,pin11 = L
F101 5,6
≥ -68dBm
Check ANT Switch
control circuit
No
No
Resolder F101
U104
pin 20 ≥ -70dBm
pin 21 ≥ -70dBm
Yes
Yes
Resolder C119, C120, L112
No
Yes
U104pin11,12,16,
29,32,33,36 ≥2.8V
U104 pin 4,5,6,7
≥ 0.2Vp_p
Check & Resolder
C131,C134,C135
No
No
Resolder U104
Yes
Yes
Check UCP200
END