Sony MDX-C8970R Troubleshooting guide, noises, General, Problem, Problem, Problem, No sound, function, possible, received, Cause/Solution, CD/MD playback, Cause/Solution

Troubleshooting guide

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.

General

Problem	Cause/Solution
No sound.	•Cancel the ATT function.
	•Set the fader control to the centre position for speaker
	systems.
	•Rotate the dial clockwise to adjust the volume.

The contents of the memory have been erased.

•The power cord or battery has been disconnected.

•The reset button has been pressed.

tStore again into the memory.

Indications do not appear in the display.

Remove the front panel and clean the connectors. See “Cleaning the connectors” (page 43) for details.

CD/MD playback

Problem	Cause/Solution
A disc cannot be loaded.	•Another MD is already loaded.
	•The MD is forcibly inserted upside down or in the wrong
	way (CD).
Playback does not begin.	Defective MD or dusty CD.
A disc is automatically ejected.	The ambient temperature exceeds 50°C.
The operation buttons do not	Press the reset button.
function.

The sound skips due to vibration.

•The unit is installed at an angle of more than 20°.

•The unit is not installed in a sturdy part of the car.

Radio reception

Problem	Cause/Solution
Preset tuning is not possible.	• Memorise the correct frequency.
	• The broadcast signal is too weak.
Automatic tuning is not	The broadcast signal is too weak.
possible.	t Use manual tuning.
The stations cannot be	Connect a power antenna control lead (blue) or accessory
received.	power input lead (red) to the power supply lead of a car’s
The sound is hampered by	antenna booster.
noises.	(When your car has built-in FM/MW/LW antenna in the rear/
	side glass only.)
The “ST” indication flashes.	•Tune in the frequency accurately.
	•The broadcast signal is too weak.
	t Set to Mono mode (page 15).

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