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Flow Chart of Troubleshooting
9-26
9-18. PCS Receiver
RX ON
RF input : CH center freq : +67.7kHz
Cell Power : -60dBm
Yes
F100 Pin19
≥ -65dBm
No
Resolder RFS100,RFS101,
R100,L100,L101
Yes
F100 Pin 7,8
≥ -68dBm
Check F100
pin10,pin11 = L
No
No
Check ANT Switch
control circuit
Yes
Yes
Resolder F100
RFS102
pin 20 ≥ -70dBm
pin 21 ≥ -70dBm
No
Resolder L112,L113,L114
Yes
RFS102
pin16,17,29,
32,36 ≥2.8V
RFS102 pin 4,5,6,7
≥ 0.2Vp_p
No
No
Check & Resolder
RFS102, C117,L123,C126
And PMU Part
Yes
Yes
Resolder RFS102
Check UCP201
END