Hello there, I have a question, I hope anyone can help me, the problem is:

I have a PS2 slim with chip matrix infinity 1.82. I backed up my Gran Turismo 3 coz it was soo damaged and I did the same with my action replay max evo as well, now heres the problem when I try to use the ARMAX with gran turismo codes inmediately the system tells me to insert the cd into tray, I do it but right after appears a message saying: ensure that the disc is inside" ( I dont remember the exact message) I turned on the multi disk in the chip but it still not working I dunno what else to do: I tried with Other ARMAX version even gameshark and nothing,

Is there anyone who had this problem and fixed it?

Thanks a lot for your time and help