JVC XV-N650BEU Service Manual page 21

E
Normal
audio output when disc
playback?
YES
Normal
IR.VFD & Front panel
key functions?
YES
TEST END
Audio DAC
NO
received correct data
stream?
Normal
audio DAC out?
Check audio filter,
amplify, mute circuit.
Commu-
nications between
NO
IR.VFD Front panel key
& ZR36888 is
normally?
Check the cable connection
on front panel.
Check connection between
NO
YES
NO
YES
Check communication lines
NO
YES
ZR36888 & audio DAC.
Check the related
circuit of Audio DAC.
on ZR36888
(No.YD119)1-21