Denon AVR-3808CI Service Manual page 17

Q Q
3 7 6 3 1 5 1 5 0
E
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 to OSD driver input
signal selector. NG
Input : IC512-5pin
Output : IC512-4pin
OK
T E
L 1 3 9 4 2 2 9 6 5 1 3
Check input/output of OSD driver.
Check soldering of IC510 and
NG
Input : IC510-15pin
surrounding parts.
Output : IC510-13pin
OK
Check input/output of buffer AMP.
NG
Input : IC406-3pin
Output : IC406-1pin
OK
Check input/output of analog SW.
NG
Input : IC416-2pin
Output : IC416-3pin
OK
Check input/output of AMP.
NG
Input : IC405-3pin
Output : IC405-1pin
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 solder-
NG
IC421-9,10,11pin : L(0V)
ing, or DIGITAL UNIT flaw.
IC421-6pin : L(0V)
OK
Check soldering of IC421.
Check soldering of IC409C.
Check analog SW settings. NG Check IC508 and CW132 soldering, or
IC512-9,10,11pin : L(0V) DIGITAL UNIT flaw.
OK
Check soldering of IC512.
Check soldering of IC406.
Check analog SW settings.
NG Check IC508 and CW132 soldering, or
IC416-10pin : L(0V)
DIGITAL UNIT flaw.
IC416-9pin : H(+5V)
OK
Check soldering of IC416.
Check soldering of IC405.
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8 9
OK
OK
OK
OK
Q Q
3 7 6 3 1 5 1
OK
OK
OK
OK
c o
.
17
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
NG
NG NG
OK
NG
m
9 9
9 9