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Flow Chart of Troubleshooting
10-2-2. DCS RX
Continuous RX ON
RF Input : 660 CH
AMP : -50dBm
NORMAL CONDITION
Catch the channel ?
YES
DUF100 Check
Pin #6 ≥ -65dBm ?
YES
DUF100 Check
Pin #13 ≥ -65dBm ?
YES
U106 Check
Pin#43 ≥ -65dBm ?
YES
U106 Check
Pin#15,16,23,27,31
=2.9V?
YES
U106 Check
Pin#28,29,30,54=100mV?
YES
Check UCD300
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NO
NO
NO
NO
NO
NO
U106 Check
Pin #17 : 13MHz ?
Vpp : 1.1V?
YES
U106
Change or resolder
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Check soldered status of
C152(5.6pF),R100(NC),L104(NC)
RFS100, C100, L103
Resolder or Change
DUF100 Resolder or Change
Check soldered status of
L107, C118
C104,C105,C106,C110,
C113,C116,UCD300
Check or resolder
NO
R113 = 13MHz ?
Vpp : 1.2V?
YES
C136, R113
resolder
10- 23
NO
R110 = 1.5V ?
YES
TCX101
Change or resolder
NO
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