Sony CDX-C7850R - Manual (Page 35)

35
Troubleshooting guide
Problem
No sound.
The contents of the memory
have been erased.
Indications do not appear in the
display.
Cause/Solution
•Cancel the ATT function.
•Set the fader control to the centre position for two-speaker
systems.
•Rotate the dial in a clockwise direction to adjust the volume.
• The power cord or battery has been disconnected.
• The reset button was pressed.
n Store again into the memory.
Remove the front panel and clean the connectors. See
“Cleaning the connectors” (page 33) for details.
CD/MD playback
Cause/Solution
•Another CD is already loaded.
•The CD is forcibly inserted upside down or in the wrong way
(MD).
Defective MD or dusty CD.
The ambient temperature exceeds 50°C.
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.
Problem
A disc cannot be loaded.
Playback does not begin.
A disc is automatically ejected.
The operation buttons do not
function.
The sound skips due to
vibration.
Radio reception
Problem
Preset tuning is not possible.
Automatic tuning is not
possible.
The “ST” indication flashes.
Cause/Solution
• Memorise the correct frequency.
• The broadcast signal is too weak.
The broadcast signal is too weak.
n Use manual tuning.
•Tune in the frequency accurately.
•The broadcast signal is too weak.
n Set to the monaural mode (page 14).
The following checklist will help you remedy the problems you may encounter with your unit.
Before going through the checklist below, check the connections and operating procedures.
General
continue to next page n