Sony LBT-GTZ4I Manual

Sound comes from one channel,
or the left and right volumes are
unbalanced.

• Place the speakers as symmetrically as

possible.

• Connect only the supplied speakers.

There is severe hum or noise.

• A TV or VCR is placed too close to the

unit. Move the unit away from the TV or
VCR.

• Move the unit away from the source of

noise.

• Connect the unit to a different wall

outlet.

• Install a noise filter (commercially

available) to the power cord.

• Turn off surrounding electrical

equipment.

The timer does not function.

• Check the timer setting and set the

correct time (page 36).

• Cancel the Sleep Timer function

(page 36).

• You cannot select the Play Timer and

the Recording Timer at the same time.

The remote does not function.

• Remove the obstacles between the

remote and the unit.

• Move the remote closer to the unit.
• Point the remote at the unit’s sensor.
• Replace the batteries (R6/size AA).
• Move the unit away from the

fluorescent light.

There is acoustic feedback.

• Reduce the volume.
• Move the microphone away from the

speakers or change the direction of the
microphone.

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.

The disc tray does not close.

• Load the disc correctly.
• Always close the disc tray by pressing

OPEN/CLOSE. 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-USB Synchronized Transfer,
or REC1 Transferring. Press x to
cancel the transferring, then press Z
OPEN/CLOSE 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 47).
• Reload the disc.
• Load the disc that this system can play

back (page 47).

• 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 N to start playback.

The sound skips.

• Wipe the disc clean (page 47).
• Reload the disc.
• Move the unit to place without vibration

(e.g., on top of a stable stand).

• Move the speakers away from the unit,

or place them on seperate stands. When
you listen to a track with bass sounds at
high volume, the speaker vibration may
cause the sound to skip.