Denon AVR-2308CI Service Manual page 20

Q Q
3 7 6 3 1 5 1 5 0
G
Input
CVBS
1U-3853-1 A.VIDEO UNIT
Check 5VA. NG To troubleshooting 1.1 Power not turn
+5VA : CX077-3,4pin on.
-5VA : CX077-5pin
OK
Check input/output of analog SW.
NG
Input : IC109-13pin
Output : IC109-3pin
OK
Check input/output of AMP.
NG
Input : IC115-5pin
Output : IC115-7pin
OK
Check input/output of AMP.
NG
Input : IC309-3pin
Output : IC309-1pin
OK
Check output to 1U-3852 DIGITAL UNIT.
NG
Output V : CX113-5pin
T E
L 1 3 9 4 2 2 9 6 5 1 3
OK
Check input of video driver.
NG
Input Y : IC305-2pin
Input C : IC305-4pin
OK
Check output of video driver.
NG
Output Y : IC305-34pin
Output C : IC305-32pin
OK
Check input/output of analog SW.
Input Y : IC104-5pin
NG
Input C : IC104-14pin
Output Y : IC104-3pin
Output C : IC104-13pin
OK
Check input/output of AMP.
Input Y: IC111-3pin
NG
Input C: IC111-5pin
Output Y : IC111-1pin
Output C : IC111-7pin
OK
w w w
Check cable between main unit and
monitor or Check monitor.
.
Unless specified, 1U-3853-1 A.VIDEO UNIT part.
Check analog SW settings.
Check IC301 and CX073
NG
IC109-9,10,11pin : L(0V)
soldering, or DIGITAL UNIT flaw.
IC109-6pi : L(0V)
OK
Check soldering of IC109.
Check soldering of IC115 and
surrounding parts.
Check soldering of IC309 and
surrounding parts.
Check soldering of CX113.
Check CX113 soldering, or DIGITAL
UNIT flaw.
Check soldering of IC305.
Check analog SW settings.
NG Check IC301 and CX073 soldering, or
IC104-10pin : H(+5V)
DIGITAL UNIT flaw.
IC104-9pin : L(0V)
OK
Check soldering of IC104.
Check soldering of IC111.
x a o
y
i
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8
OK
OK
OK
OK
Q Q
3 7 6 3
OK
OK
OK
OK
OK
u 1 6 3
.
20
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AVR-2308CI / AVR-888 / AVR-2308 / AVC-2308
9 2 4 9 8
NG
NG
OK
NG
NG
NG
1 5 1 5 0 8 9 2 4
NG
NG
NG
OK
NG
m
c o
2 9 9
NG
9 8 2 9 9
NG