Troubleshooting; Problems And Remedies - Sony MHC-GNZ55D Operating Instructions Manual

Troubleshooting

Problems and remedies

Should you encounter a problem with your
system, do the following:
1
Make sure the power cord and speaker
cords are connected correctly and firmly.
2
Find your problem in the troubleshooting
checklist below and take the indicated
corrective action.
If the problem persists after doing all of the
above, consult your nearest Sony dealer.
When the ?/1 indicator flashes
Immediately unplug the power cord and
check the following items.
• If your unit have a voltage selector, is the
voltage selector set to the correct voltage?
Check the voltage for your region, then
make sure the voltage selector is set
correctly.
• Are the + and – speaker cords short-
circuited?
• Are you using the supplied speakers?
• Is anything blocking the ventilation holes
on the rear of the unit?
After checking the above items and fixing
any problems, plug in the power cord again
and turn on the unit. If the ?/1 indicator still
flashes, or if the cause of the problem cannot
be found even after checking all the above
items, consult your nearest Sony dealer.
General
The display starts flashing as soon as you
plug in the power cord even though you have
not turned on the system.
• The demonstration mode started. Press ?/1 (see
step 5 of "Hooking up the system" on page 16).
The clock or timer setting is canceled.
• The power cord is disconnected or a power failure
occured. Redo "Setting the clock" (page 18). If
you have set the timer, redo "Waking up to music"
(page 74) and "Timer recording radio programs"
(page 75).
The radio presetting is canceled.
• The power cord is disconnected or a power failure
occured for longer than half a day. Redo
"Presetting radio stations" (page 57).
"– –:– –" appears in the display.
• A power failure has occurred. Set the clock
(page 18) and timer settings (page 74 and 75)
again.
There is no sound.
• Press VOLUME + repeatedly (or turn MASTER
VOLUME on the unit clockwise).
• The headphones are connected to the PHONES
jack.
• Check the speaker connections (page 15).
• There is no audio output during Timer Recording.
• The system is in pause mode, in Slow-motion Play
or in Lock Search. Press H (or nN on the
unit) to start the playback.
There is no microphone sound.
• Press VOLUME + repeatedly (or turn MASTER
VOLUME on the unit clockwise) or turn
MIC LEVEL (MHC-GNZ55D only), MIC 1
LEVEL, or MIC 2 LEVEL on the unit clockwise
to increase the microphone volume.
• Make sure the microphone is connected to the
MIC (MHC-GNZ55D only), MIC 1, or MIC 2
jack correctly.
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.
The timer does not function.
• Check the timer setting and set the correct time
(page 74 and 75).
• Cancel the Sleep Timer function (page 74).
• You cannot select the Play Timer and the Timer
Recording 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).
• Locate the unit away from the fluorescent light.
continued
85 GB