Troubleshooting; Problems And Remedies - Sony MHC-GNX100, MHC-GNX90, MHC-GNX88, MHC-GNX80, MHC-GNX77, MHC-GNX70, MHC-GX9900, MHC-GNX66, MHC-GNX60 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.
• (MHC-GNX100/GNX88/GNX80 only)
Is the system control cable connected
correctly?
• If your unit have 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 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 problem, plug in the power cord again
and turn on the system. If the ?/1 indicator
still flashing, 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 7 of "Hooking up the system" on page 8).
The clock/timer setting is canceled.
• The power cord is disconnected or a power failure
occured. Redo "Setting the clock" (page 13). If
you have set the timer, redo "Waking up to music"
(page 33) and "Timer recording radio programs"
(page 35).
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 19).
"– –:– –" appears in the display.
• A power failure occurred. Set the clock (page 13)
and timer settings (page 33 to 36) again.
There is no sound.
• Turn MASTER VOLUME clockwise (or press
VOLUME + on the remote).
• Make sure the headphones are not connected to
the PHONES jack.
• Check the speaker connections (page 9).
• There is no audio output during Timer Recording.
There is no microphone sound.
• Turn MASTER VOLUME (or press
VOLUME +/– on the remote repeatedly) or
MIC LEVEL to adjust the microphone volume.
• Make sure the microphone is connected to the
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 cannot be set.
• Set the clock again (page 13).
The timer does not function.
• Check the timer setting and set the correct time
(pages 33 to 36).
• Cancel the Sleep Timer function (page 33).
• You cannot select the Play Timer and Timer
Recording simultaneously.
continued
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