Denon AirPlay AVR-3311CI, Service Manual

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Input
CVBS
A
Check power supply voltage.
V+5V : N2004-4pin
V-5V : N2004-1pin
Check on set value of each IC.
HDMI B'D
L4900 : Check I 2 C communication
waveforms.
L4901 : Check I 2 C communication
waveforms.
Check output of selector (U2003).
V : K2003 (Lead of terminal)
V : JV154
Check power supply voltage of
U2003, and soldering of IC.
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
and VIDEO B'D.
Check input of selector (U2003).
V : JV82
Check cable between main unit
and player or check player.
Extend HDMI B'D using a jig.
REGULATOR B'D flaw.
HDMI B'D flaw.
NG
NG
NG NG
OK
OK
OK
OK
b
Unless specified, VIDEO B'd part.