Sony MHC-GNZ444D Operating Instructions Manual page 80

Speakers
Sound comes from one channel or
unbalanced left and right volume.
 Place the speakers as symmetrically as
possible.
 Check that the speakers are connected
securely and correctly.
 The source being played back is
monaural.
Sound lacks bass.
 Check that the speaker's + and 
terminals are connected correctly.
There is no sound from the
subwoofer (MHC-GNZ444D only).
 Make sure the subwoofer is turned on.
 Set the subwoofer level to the
appropriate level.
 No sound is produced from the
subwoofer when you play back a DVD
VIDEO that does not have subwoofer
output recorded.
 Check that the subwoofer is connected
securely and correctly.
Disc Player
The disc tray does not open and
"LOCKED" appears in the display.
 Consult your nearest Sony dealer or
local authorized Sony service facility.
0
GB
The disc tray does not close.
 Load the disc correctly.
 Always close the disc tray by pressing
 
on the unit. Do not forcibly push

the disc tray to close it as this may
cause a malfunction.
The disc does not eject.
 You cannot eject the disc during CD
Synchro Recording. Press 
cancel the CD Synchro Recording,

then press 
on the unit to eject the
disc.
 Consult your nearest Sony dealer.
Playback does not start.
 Open the disc tray and check whether
a disc is loaded.
 Wipe the disc clean (page 88).
 Reload the disc.
 Load the disc that this system can play
back (page 7).
 Load the disc on the disc tray with the
label side facing up.
 Remove the disc and wipe away the
moisture on the disc, then leave the
system turned on for a few hours until
the moisture evaporates.
 Press  (or DVD  on the unit)
to start playback.
 The region code on the DVD VIDEO
does not match the system.
 Cancel the Custom Parental Control
function (page 50).

to
