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Flow Chart of Troubleshooting
9-50
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9-8. DCS RX
PIN28
PIN27
PIN1
PAM100 PIN8
≥ -65dBm
F102 PIN5
≥ -70dBm
Re-solder RFS100,
L101, C102
U101 PIN6,7
≥ -75dBm
Check PAM100
PIN28=H, PIN27=H
PIN1=H
Re-solder or
Change
C127,L109,F101
Check Antenna
Switch Control
Re-solder or Change
PAM100
YES
YES
YES
YES
NO
NO
NO
RX ON
AMP--50dBm
Check U101,
UCP300
END
NO
Re-solder or
Change
L122,L105,C125,
YES
U101 PIN46,
47≥-75dBm