Sony CDX-M750 User Manual
36
Troubleshooting guide
Problem
No sound.
The contents of the memory
have been erased.
have been erased.
No beep sound.
The sound is noisy.
Cause/Solution
•Cancel the ATT function.
•Set the fader control to the center position for two-speaker
•Set the fader control to the center position for two-speaker
system.
•Press (+) of the VOL button to adjust the volume.
•The power cord or battery has been disconnected.
•The reset button has been pressed.
•The reset button has been pressed.
t Store again into the memory.
The beep sound is cancelled (page 26).
You are using a mobile phone.
CD/MD playback
Cause/Solution
•Another CD is already loaded.
•The CD is forcibly inserted upside down or in the wrong
•The CD is forcibly inserted upside down or in the wrong
way.
Defective MD or dirty CD.
The ambient temperature exceeds 50°C (122°F).
You have closed the front panel or pushed the disc forcibly
into the unit while the unit was ejecting the disc after you
pressed Z.
t Press the reset button.
into the unit while the unit was ejecting the disc after you
pressed Z.
t Press the reset button.
Press the reset button.
•The unit is installed at an angle of more than 60°.
•The unit is not installed in a sturdy part of the car.
•The unit is not installed in a sturdy part of the car.
A dirty or defective disc.
You cannot label CDs unless you connect a CD unit with the
custom file function.
t Press (LIST) for two seconds.
custom file function.
t Press (LIST) for two seconds.
Problem
A disc cannot be loaded.
Playback does not begin.
A disc is automatically ejected.
CD will not be ejected.
The operation buttons do not
function.
function.
The sound skips due to
vibration.
vibration.
The sound skips.
Cannot turn off the “--------”
indication.
indication.
The following checklist will help you remedy the problems you may encounter with your unit.
Before going through the checklist below, check the connection and operating procedures.
Before going through the checklist below, check the connection and operating procedures.
General