Ok so I just fixed my problem. Although I was getting the error because of using an iPhone instead of a CD I believe it is the same solution.
As jjgomex suggested it was pulling to much power, to what I did was turn on the headunit switch the source to something other than what causes the problem.
Then go to the Audio settings in the menu and turn bass all the way down and Sub Control to -1.
Then turn off headunit and turn it on again and switch to the source of problem, it should be fixed, or at least it did for me.
:) Good Luck!
I had this problem in my pioneer car radio with symptoms similar to those above. My solution was to reset the radio...how?
Garbage
Same porblem I thought it was a problem with the power. It seems when my sub woofer is pulling too much power I recieve ERROR-AO. The only way to eject with out dissasembleing it is to turn off the car so no power and eject as soon as you turn the car back on. let me know if there is a way to fix the problem.
thanks
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same thing. error ao and the cd wont eject i even tried pullin it out with tweezers and it wont let it go
same problem ERROR AO and CD will come out only when you disassemble headunit .top cover + 4 screws on the cd mechanics. I tried to clean laser lens , lubricate mechanism - wont help ... i am buying alpine i think
My DEH-7500mp was fanatastic until the ERROR-A0 comes on when i go to
CD mode.Also wont eject.The CD has come on when occasionaly.I will
update you when i get it fixed
I have the same problem, except not with CDs. It happens when I plug in my iPhone, it will play the song but says ERROR A0 and I can't control anything, not even change bass or sub controls which one person suggested is the problem.
don't read C.D.
Same problem here. I unplugged and let the unit sit for 24 hours. Then I plugged back in and CD ejected. Unfortunately as soon as I inserted another, I got the same message.
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