Denon AVR-2311CI Service Manual page 36

B
Input
S
Check power supply voltage.
V+5V : N2004-4pin
V-5V : N2004-1pin
OK
Check on set value of each IC.
HDMI B'D
L4900 : Check I C communication
2
waveforms.
L4901 : Check I 2 C communication
waveforms.
L4905 : H(+5V)
L4906 : L(0V)
OK
Extend HDMI B'D using a jig.
OK
Check output of video amplifier
(U2005).
S-Y : JV101
S-C : JV27
OK
Check output of selector.
Y/C MIX : K2003
(Lead of terminal)
OK
Check cable between main unit
and monitor or check monitor.
Check FRONT CONNECTOR B'D
flaw, and connection of FRONT
CONNECTOR B'D or HDMI B'D/
VIDEO B'D.
NG
REGULATOR B'D flaw.
NG
HDMI B'D flaw.
Check input of video amplifier
NG
(U2005).
S-Y : C2009(- side)
S-C : C2010(- side)
OK
Check power supply voltage of
U2005, and surrounding circuitry
soldering.
NG
Check input of selector (U2003).
Y/C MIX : JV61
OK
Check power supply voltage of
U2003, and soldering of IC.
36
Check cable between main unit
and player or check player.
Check input selector(U2001).
NG
S-Y : JV192
S-C : JV89
Check power supply voltage of
U2001, and surrounding circuitry
soldering.
Check power supply voltage of
NG
U2007, and surrounding circuitry
soldering.
b Unless specified, A.VIDEO B'd part.
NG
OK