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Level 3 Repair
8-32
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8-3-13. GSM900 Receiver
RX ON
Cell Power : -60dBm
PAM100 Pin14
≥
-65dBm
(TP:L105 using
spectrum analyzer)
Yes
Resolder PAM100, L105,C104
No
Yes
No
Check PAM100
pin20=L, pin19=H
PAM100 Pin10
≥
-68dBm
(TP:C191 using
specturm analyzer)
Check ANT Switch
control circuit
No
Yes
Resolder PAM100
Yes
Resolder OSC201
TCXO CLOCK
CHECK?
26MHz @ OSC201
Yes
No
Check UCP200
Yes
END