Denon AVR-3808CI Service Manual page 23

Q Q
3 7 6 3 1 5 1 5 0
I
Input
CVBS
Check 5VA and +5VD.
+5VA : CW082-3,4pin NG To troubleshooting 1.1 Power not turn
-5VA : CW082-1,2pin on.
+5VD : CW132-1pin
OK
Check input/output of analog SW.
NG
Input : IC420-13pin
Output : IC420-3pin
OK
Check input/output of AMP.
NG Check soldering of IC409 and
Input : IC409-5pin
surrounding parts.
Output : IC409-7pin
OK
Check output to 1U-3799 DIGITAL UNIT.
NG
Output V : CW113-5pin
OK
1U-3800-2 VIDEO CONNECT UNIT
Check input of video driver.
NG
Check CX093 soldering, or DIGITAL
Input Y : IC703-8pin
UNIT flaw.
T E Input C : IC703-2pin
L 1 3 9 4 2 2 9 6 5 1 3
OK
Check output of video driver.
NG
Output Y : IC703-25pin
Output C : IC703-29pin
OK
Check input/output of analog SW.
Input Y : IC415-5pin
NG
Input C : IC415-14pin
Output Y : IC415-3pin
Output C : IC415-13pin
OK
Check input/output of AMP.
Input Y: IC404-3pin
NG
Input C: IC404-5pin
Output Y : IC404-1pin
Output C : IC404-7pin
OK
Check cable between main unit and
monitor or Check monitor.
w w w Unless specified, 1U-3800-1 A.VIDEO UNIT part.
.
Check analog SW settings.
Check IC505, IC508 and CW132
NG
IC420-9,10,11pin : L(0V)
soldering, or DIGITAL UNIT flaw.
IC420-6pi : L(0V)
OK
Check soldering of IC420.
Check soldering of CW113.
1U-3800-2 VIDEO CONNECT UNIT
Check soldering of IC703.
Check analog SW settings.
NG Check IC506 and CW132 soldering, or
IC415-10pin : H(+5V)
DIGITAL UNIT flaw.
IC415-9pin : L(0V)
OK
Check soldering of IC415.
Check soldering of IC404.
x a o
y
i
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8
OK
OK
OK
OK
Q Q
3 7 6 3
OK
OK
OK
OK
u 1 6 3
.
23
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9 2 4 9 8
NG
NG
OK
NG
NG
NG
1 5 1 5 0 8 9 2 4
NG
NG
OK
NG
m
c o
AVR-3808CI / AVR-3808 / AVC-3808
2 9 9
NG
9 8 2 9 9
NG