Sony WX-C570 Operating Instructions Manual page 17

Error displays (with optional CD/MD changer(s) connected)
The following indications will flash for about five seconds and an alarm sound will be heard.
Display Cause
The disc magazine is not inserted in
the CD/MD changer.
No disc is inserted in the disc
magazine.
The disc is dirty.
The disc is inserted upside down.
The ambient temperature is more than
50 °C.
If the above-mentioned solutions do not help to improve the situation, consult your nearest Sony
dealer.
Solution
Insert the disc magazine with discs
into the CD/MD changer.
Take out the magazine and insert a
disc.
Clean the disc.
Insert the disc correctly.
Wait until the temperature goes
below 50 °C.
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