Denon AVR-2308CI Service Manual page 18

Q Q
3 7 6 3 1 5 1 5 0
F
Input
CVBS
1U-3853-1 A.VIDEO UNIT
To troubleshooting 1.1 Power not turn
Check 5VA. NG
on.
+5VA : CX077-3,4pin
-5VA : CX077-5pin
OK
Check input/output of analog SW.
NG
Input : IC110-13pin
Output : IC110-3pin
OK
Check input/output of AMP.
NG
Input : IC115-3pin
Output : IC115-1pin
OK
Check input/output of video driver.
NG
Input : IC101-3pin
Output : IC101-33pin
OK
T E
L 1 3 9 4 2 2 9 6 5 1 3
Check cable between main unit and
monitor or Check monitor.
Unless specified, 1U-3853-1 A.VIDEO UNIT part.
w w w
.
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Check analog SW settings.
Check IC301 and CX073
NG
IC110-9,10,11pin : L(0V)
soldering, or DIGITAL UNIT flaw.
IC110-6pin : L(0V)
OK
Check soldering of IC110.
Check soldering of IC115.
Check analog video driver. NG
CX155 soldering, or DIGITAL UNIT flaw.
IC101-7pin : H(5V)
OK
Check soldering of IC101.
x a o u 1 6 3
y
i
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8 9
OK
OK
OK
OK
Q Q
3 7 6 3 1 5 1
c o
.
18
AVR-2308CI / AVR-888 / AVR-2308 / AVC-2308
2 4 9 8 2
NG
NG NG
OK
NG
NG NG
OK
5 0 8 9 2 4 9 8 2
m
9 9
9 9