Denon AVR-3808CI Service Manual page 21

Q Q
3 7 6 3 1 5 1 5 0
H
Input
CVBS
Check 5VA +and 5VD.
To troubleshooting 1.1 Power not turn
+5VA : CW082-3,4pin NG
on.
-5VA : CW082-1,2pin
+5VD : CW132-1pin
OK
Check input/output of analog SW.
NG
Input : IC421-13pin
Output : IC421-3pin
OK
Check input/output of AMP.
NG
Input : IC409-3pin
Output : IC409-1pin
OK
Check input/output of analog SW.
NG
Input : IC414-1pin
Output : IC414-15pin
OK
T E
L 1 3 9 4 2 2 9 6 5 1 3
Check input/output of AMP.
NG
Input : IC403-3pin
Output : IC403-1pin
OK
Check cable between main unit and
monitor or Check monitor.
Unless specified, 1U-3800-1 A.VIDEO UNIT part.
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.
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Check analog SW settings.
Check IC505, IC508 and CW132
NG
IC421-9,10,11pin : L(0V)
soldering, or DIGITAL UNIT flaw.
IC421-6pin : L(0V)
OK
Check soldering of IC421.
Check soldering of IC409.
Check analog SW settings. NG Check IC505 and CW132 soldering, or
IC414-9,10,11pin : H(5V) DIGITAL UNIT flaw.
OK
Check soldering of IC414.
Check soldering of IC403.
x a o u 1 6 3
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8 9
OK
OK
OK
OK
Q Q
3 7 6 3 1 5 1
OK
c o
.
21
AVR-3808CI / AVR-3808 / AVC-3808
2 4 9 8 2
NG
NG NG
OK
NG
NG NG
OK
5 0 8 9 2 4 9 8 2
NG
m
9 9
9 9