Denon AVR-3808CI Service Manual page 19

A
Input
CVBS
Check 5VA and +5VD.
+5VA : CW082-3,4pin NG To troubleshooting 1.1 Power not turn
-5VA : CW082-1,2pin on.
+5VD : CW132-1pin
OK
Check input/output of analog SW.
NG
Input : IC420-13pin
Output : IC420-3pin
OK
Check input/output of AMP.
Check soldering of IC409 and
NG
Input : IC409-5pin
surrounding parts.
Output : IC409-7pin
OK
Check output to 1U-3799 DIGITAL UNIT.
NG
Output V : CW113-5pin
OK
1U-3800-2 VIDEO CONNECT UNIT
1U-3800-2 VIDEO CONNECT UNIT
Check input of video driver.
NG
Check CX093 soldering, or digital unit
Input Y : IC703-8pin
flaw.
Input C : IC703-2pin
OK
Check output of video driver. NG
Output V : IC703-27pin
OK
Check input/output of analog SW.
NG
Input : IC419-14pin
Output : IC419-13pin
OK
Check input/output of AMP.
NG
Input : IC405-5pin
Output : IC405-7pin
OK
Check cable between main unit and
monitor or Check monitor.
Unless specified, 1U-3800-1 A.VIDEO UNIT part.
Check analog SW settings.
Check IC505, IC508 and CW132
NG
IC420-9,10,11pin : L(0V)
soldering, or DIGITAL UNIT flaw.
IC420-6pi : L(0V)
OK
Check soldering of IC402.
Check soldering of CW113.
Check soldering of IC703.
Check analog SW settings.
NG Check IC506 and CW132 soldering, or
IC419-10pin : H(+5V)
DIGITAL UNIT flaw.
IC419-9pin : L(0V)
OK
Check soldering of IC419.
Check soldering of IC405.
OK
OK
OK
OK
OK
OK
OK
OK
19
AVR-3808CI / AVR-3808 / AVC-3808
NG
NG NG
OK
NG
NG
NG
NG
NG NG
OK
NG