Sony Model CDX-3100 Operating Instructions Manual page 14

Error displays
The following indications will flash for about five seconds.
Display
If the above-mentioned solutions do not help to improve the situation, consult your nearest Sony
dealer.
EN
14
Actual total number:
Cause
CD is dirty or inserted upside down.
The CD player cannot be operated
because of some problem.
Solution
Clean or insert the CD correctly.
Press the reset or 6 button.
E
SONY CDX-3100 ( ,S,C) 3-810-605-31(1)