Denon AVR-3808CI Service Manual page 21

C
Input
COMPONENT
Check 5VA, +5VD and +9VA.
+5VA : CW082-3,4pin
To troubleshooting 1.1 Power not turn
NG
-5VA : CW082-1,2pin
on.
+5VD : CW132-1pin
+9VA : CW082-8pin
OK
Check input/output of COMPONENT
selector.
Input Y : IC601-48pin
Input Cb : IC601-2pin Check IC601 and CW092
NG
Input Cr : IC601-4pin soldering, or DIGITAL UNIT flaw.
Output Y : IC601-34pin
Output Cb : IC601-32pin
Output Cr : IC601-30pin
OK
Check input/output of AMP.
Input Y : IC602-1pin
Input Cb : IC602-3pin
NG
Input Cr : IC602-5pin
Output Y : IC602-13pin
Output Cb : IC602-11pin
Output Cr : IC602-9pin
Check soldering of IC602 and
OK
surrounding parts.
Check output to 1U-3799 DIGITAL UNIT.
Output Y : CW112-5pin
NG
Output Cb : CW112-3pin
Output Cr : CW112-1pin
1U-3800-2 VIDEO CONNECT UNIT.
1U-3800-2 VIDEO CONNECT UNIT
Check input of video driver
NG
Check CX093 soldering,
Input Y : IC703-8pin
or DIGITAL UNIT 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 AMP settings. NG Check IC508 and CW132 soldering, or
IC602-7pin : H(5V) DIGITAL UNIT flaw.
OK
Check soldering of CW112.
Check soldering of IC703.
Check analog SW settings.
Check IC506 and CW132 soldering, or
NG
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
21
AVR-3808CI / AVR-3808 / AVC-3808
NG
NG
NG NG
OK
NG
NG
NG
NG NG
OK
NG