Denon AVR-1909 Service Manual page 27

C
Input
CVBS/S
Check power supply voltage
+5V : CN2005-8pin To troubleshooting 1.1 Power not turn
NG
-5V : CN2005-7pin on.
MC_+5V : CN2001-5pin
OK
Check output of AMP
Output V : IC2016-33pin NG
Output Y : IC2016-31pin
Output C : IC2016-29pin
OK
Check input of input selector and
Check cable between main unit
and monitor or Check monitor.
Unless specified, VIDEO UNIT part.
Check VCRINH NG Check soldering of VIDEO CNT UNIT
INH : CP2002-10pin : H(+5V) connector base, and check poor contacts.
surrounding circuitry soldering.
Input : IC2009,IC2010,IC2011
OK
OK
27
AVR-1909/789, AVC-1909
NG
NG NG
OK