Denon AVR-2308CI Service Manual page 26

Q Q
3 7 6 3 1 5 1 5 0
L
Input
S
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.
Input Y : IC103-13pin
NG
Input C : IC107-13pin
Output Y : IC103-3pin
Output C : IC107-3pin
OK
Check input/output of AMP.
Input Y : IC113-3pin
NG Check soldering of IC113, IC114 and
Input C : IC114-3pin
surrounding parts.
Output Y : IC113-1pin
Output C : IC114-1pin
OK
Check input/output of video driver.
Input Y : IC101-8pin
NG
Input C : IC101-6pin
Output Y : IC101-29pin
T E
Output C : IC101-31pin L 1 3 9 4 2 2 9 6 5 1 3
OK
Check cable between main unit and
monitor or Check monitor.
Unless specified, 1U-3853-1 A.VIDEO UNIT part.
w w w
.
Check analog SW settings.
IC103-9,10,11pin : L(0V)
Check IC301 and CX073
NG
IC103-6pin : L(0V)
soldering, or DIGITAL UNIT flaw.
IC107-9,10,11pin : L(0V)
IC107-6pin : L(0V)
OK
Check soldering of IC103 and IC107.
Check video driver settings. NG Check CX155 soldering, or DIGITAL
IC101-7pin : H(+5V) UNIT flaw.
OK
Check soldering of IC101.
x a o
y
i
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8
OK
OK
OK
Q Q
3 7 6 3
OK
u 1 6 3
.
26
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AVR-2308CI / AVR-888 / AVR-2308 / AVC-2308
9 2 4 9 8
NG
NG
OK
NG
NG
1 5 1 5 0 8 9 2 4
OK
m
c o
2 9 9
NG
NG
9 8 2 9 9