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Flow Chart of Troubleshooting
9-16. PCS Receiver
RX ON
RF input : CH center freq : +67.7kHz
Cell Power : -60 dBm
Yes
F101 Pin13
≥ -65dBm
Yes
F101 Pin5,pin6
≥ -65dBm
Yes
U101 Pin17,pin18
≥ -70dBm
Yes
U101 Pin4, 5, 6, 7
≥ 0.2Vp_p
Yes
Check UCP200
END
No
Resolder RFS100, C102, R121,
No
No
Resolder C103, C104, L103
No
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L101
Check F101
pin9=L, pin11=L
Check U101
pin12,13,29,29 ≥
2.8V
pin11 ≥ 1.8V
9-24
No
Check ANT Switch
control circuit
Yes
Change
or Resolder F101
No
Check & Resolder
PMU part
Yes
Check & Resolder
U101, OSC100
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