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Flow Chart of Troubleshooting
3-20
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PAM100
CHECK
pin12
≥
-65dBm ?
3-2-2. DCS RX
CONTINUOUS RX ON
RF INPUT : 698CH
AMP : -50dBm
YES
NORMAL CONDITION
catch the channel?
CHECK
ANT
contact ?
U102
pin 13 : 2.9V ?
PAM100 CHECK
pin18
≥
-65dBm ?
U102
CHECK
pin19,20
≥
-65dBm ?
PAM100,RFS100
resolder or change
PAM100
resolder or change
C106,C112,L105
resolder or change
UCP301 pinA13, C316
change or resolder
U102 CHECK
pin 30,31
freq :26MHz ?
Vp-p : 380mV?
OSC100
change or resolder
U101
resolder or change
UCP301
CHECK!!
U101 pin 4,5,6,7
Vp-p
: 120mV ?
NO
YES
NO
NO
NO
NO
NO
YES
YES
YES
YES
YES
F102 CHECK
pin3,4
≥
-65dBm ?
F102
resolder or change
YES
NO