User Guide

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SGH-C120 Flow Chart of Troubleshooting
2-17
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F101 CHECK
pin8
≥
-65dBm ?
2-2-2. DCS RX
CONTINUOUS RX ON
RF INPUT : 698CH
AMP : -50dBm
NORMAL CONDITION
catch the channel?
CHECK
ANT contact ?
U100
pin 12,13,25,26,27:
F101 CHECK
pin1
≥
-65dBm ?
U100 CHECK
pin19, 20
≥
-65dBm ?
F101,RFS100
resolder or change
F101
resolder or change
C124,C126,L105
resolder or change
U300 pinA13, C314
change or resolder
U100 CHECK
pin 30,31 :
26MHz ?
OSC100
change or resolder
U100
resolder or change
U300 CHECK!!
U100
pin4,5,6,7 Vp-p
: 120mV ?
NO
YES
NO
NO
NO
NO
NO
NO
YES
YES
YES
YES
YES
YES
①
③
④
②
⑦
⑥
⑤
F100 CHECK
pin8,9
≥
-65dBm ?
F100
resolder or change
YES
NO