Denon AVR-3808CI Service Manual page 29

Q Q
3 7 6 3 1 5 1 5 0
N
Input
S
Check 5VA and +5VD.
To troubleshooting 1.1 Power not turn
+5VA : CW082-3,4pin NG
on.
-5VA : CW082-1,2pin
+5VD : CW132-1pin
OK
Check input/output of analog SW.
Input Y : IC412-13pin
NG
Input C : IC418-13pin
Output Y : IC412-3pin
Output C : IC418-3pin
OK
Check input/output of AMP.
Input Y : IC407-3pin
NG Check soldering of IC407, IC408 and
Input C : IC408-3pin
surrounding parts.
Output Y : IC407-1pin
Output C : IC408-1pin
OK
Check input/output of analog SW.
Input Y : IC414-3pin
NG
Input C : IC414-13pin
Output Y : IC414-4pin
T E
Output C : IC414-14pin L 1 3 9 4 2 2 9 6 5 1 3
OK
Check input/output of AMP.
Input Y : IC402-3pin
NG
Input C : IC402-5pin
Output Y : IC402-1pin
Output C : IC402-7pin
OK
Check cable between main unit and
monitor or Check monitor.
Unless specified, 1U-3800-1 A.VIDEO UNIT part.
w w w
.
Check analog SW settings.
IC412-9,10,11pin : L(0V)
Check IC505,IC508 and CW132
NG
IC412-6pin : L(0V)
soldering, or DIGITAL UNIT flaw.
IC418-9,10,11pin : L(0V)
IC418-6pin : L(0V)
OK
Check soldering of IC412 and IC418.
Check analog SW settings. NG Check IC505 and CW132 soldering, or
IC414-9,10,11pin : H(+5V) DIGITAL UNIT flaw.
OK
Check soldering of IC414.
Check soldering of IC402.
x a o
y
i
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8
OK
OK
OK
Q Q
3 7 6 3
OK
OK
u 1 6 3
.
29
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9 2 4 9 8
NG
NG
OK
NG
NG
1 5 1 5 0 8 9 2 4
OK
NG
m
c o
AVR-3808CI / AVR-3808 / AVC-3808
2 9 9
NG
NG
9 8 2 9 9