Denon AVR-2308CI Service Manual page 33

Q Q
3 7 6 3 1 5 1 5 0
Q
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 : IC102-13pin
NG
Input C : IC106-13pin
Output Y : IC102-3pin
Output C : IC106-3pin
OK
Check input/output of AMP.
Input Y : IC113-5pin
NG Check soldering of IC113,IC114 and
Input C : IC114-5pin
surrounding parts.
Output Y : IC113-7pin
Output C : IC114-7pin
OK
Check output to 1U-3852 DIGITAL UNIT.
NG
Output Y : CX113-3pin
Output C : CX113-1pin
T E
OK
L 1 3 9 4 2 2 9 6 5 1 3
To troubleshooting 3.HDMI/DVI.
Unless specified, 1U-3853-1 A.VIDEO UNIT part.
w w w
.
Check analog SW settings.
IC102-9,10,11pin : L(0V)
Check IC301 and CX073
NG
IC102-6pin : L(0V)
soldering, or DIGITAL UNIT flaw.
IC106-9,10,11pin : L(0V)
IC106-6pin : L(0V)
OK
Check soldering of IC102 and IC106.
Check soldering of CX113.
x a o
y
i
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8
OK
OK
OK
Q Q
OK
3 7 6 3
u 1 6 3
.
33
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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
m
c o
2 9 9
NG
9 8 2 9 9