Troubleshooting - Sony MDX-CA790X Operating Instructions Manual

Troubleshooting

The following checklist will help you remedy
problems you may encounter with your unit.
Before going through the checklist below, check
the connection and operating procedures.
General
No sound.
• Press the volume + button to adjust the
volume.
• Cancel the ATT function.
• Set the fader control to the centre position for
a 2-speaker system.
• You may play an MDLP disc with an
optional MD changer without the MDLP
function ("LP: ···" may appear in the
display).
t Insert the MDLP disc in the unit to play.
The contents of the memory have been
erased.
• The RESET button has been pressed.
t Store again into the memory.
• The power cord or battery has been
disconnected.
• The power connecting cord is not connected
properly.
No beep sound.
• The beep sound is cancelled (page 21).
• An optional power amplifier is connected
and you are not using the built-in amplifier.
The display disappears from/does not
appear in the display window.
• The display disappears if you press and hold
(OFF).
t Press and hold (OFF) again until the
display appears.
• Remove the front panel and clean the
connectors. See "Cleaning the connectors"
(page 23) for details.
Stored stations and correct time are erased.
The fuse has blown.
Makes noise when the ignition key is in the
ON, ACC, or OFF position.
The leads are not matched correctly with the
car's accessory power connector.
No power is being supplied to the unit.
• Check the connection. If everything is in
order, check the fuse.
• The car does not have an ACC position.
t Press (SOURCE) (or insert a disc) to turn
on the unit.
The power is continuously supplied to the
unit.
The car does not have an ACC position.
t After turning off the ignition, be sure to
press and hold (OFF) on the unit until the
display disappears.
The power aerial does not extend.
The power aerial does not have a relay box.
MD playback
A disc cannot be loaded.
• Another MD is already loaded.
• The MD has been forcibly inserted upside
down or in the wrong way.
Playback does not begin.
Defective MD.
A disc is automatically ejected.
The ambient temperature exceeds 50°C.
MD group function does not work.
• The inserted MD in this unit does not contain
any groups.
• The current playing track may not be in a
group set by your MD recorder.
• You may play an MD containing groups
inserted in an optional MD changer.
t Insert the MD containing groups in this
unit.
The operation buttons do not function.
MD will not be ejected.
Press the RESET button.
The sound skips from vibration.
• The unit is installed at an angle of more than
30°.
• The unit is not installed in a sturdy part of
the car.
The sound skips.
Dirty or defective disc.
Cannot turn off the "--------" indication.
You may be in the name edit mode.
t Press (PTY) (LIST) for 2 seconds.
continue to next page t
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