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2-2-2. DCS RX
Continuous RX ON
RF Input : 660 CH
AMP : -50dBm
NORMAL CONDITION
Catch the channel ?
YES
F100 Check
Pin #6
-65dBm ?
YES
F100 Check
Pin #13
-65dBm ?
YES
UCD100 Check
Pin#43
-65dBm ?
YES
UCD100 Check
Pin#15,16,23,27,31
=Clean 2.8V?
YES
UCD100 Check
Pin#28,29,30,54=100mV?
YES
Check UCP301
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NO
Check soldered status of
R125, 11, C12, 153, L108, 106
NO
NO
NO
NO
NO
UCD100 Check
NO
Pin #17 : 13MHz ?
Vpp : 1.1V?
YES
UCD100
Change or resolder
SGH-E770 Flow Chart of Troubleshooting
PAM101, C10
Resolder or Change
F100 Resolder or Change
Check soldered status of
L104, C123
C17, 18, 114, 152, UCP301
Check or resolder
R118 = 13MHz ?
Vpp : 1.2V?
YES
C141, R118
resolder
NO
R116 = 1.5V ?
YES
TCX101
Change or resolder
NO
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