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7-11. PCS Receiver
CONTINUOUS RX ON
RF INPUT : 698CH
AMP : -50dBm
NORMAL CONDITION
catch the channel?
F101 CHECK
pin#9 ≥ -65dBm ?
F101 CHECK
pin#1 ≥ -65dBm ?
U102 CHECK
pin#19,20 ≥ -65dBm ?
U102 CHECK
pin#31 : 26MHz ?
Vp-p : 860mV?
CHECK
NO
YES
YES
YES
NO
YES
U300
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YES
Check soldered status of
C103 C133, L109
NO
CN100
resolder or change
NO
F101, C141, L108
resolder or change
NO
C122, C121, L105
resolder or change
X101 CHECK
26MHz ?
Vp-p : 950mV?
7-15
Flow Chart of Troubleshooting
NO
X101 CHECK
clean 3V?
YES
X101
Resolder or
Change?
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