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Flow Chart of Troubleshooting
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9-23
9-13. DCS Receiver
Check F100
pin9,pin12 = L
Check UCP200
No
No
No
No
No
Yes
Yes
Yes
Yes
Yes
Yes
Resolder U100
Check & Resolder
C116,C119,C122
and PMU Part
U100pin11,12 16,17,
29,32,33,36 ≥2.8V
pin10≥1.8V
Resolder C104, C108, L105
Resolder F100
Check ANT Switch
control circuit
U100
pin 22 ≥ -70dBm
pin 23 ≥ -70dBm
U100 pin 4,5,6,7
≥ 0.2Vp_p
F100 3,4
≥ -68dBm
RX ON
RF input : CH center freq : +67.7kHz
Cell Power : -60dBm
Yes
No
END
Resolder RFS100,C101,L100
F100 Pin13
≥ -65dBm