nad c520 reading problem

[pjoasti]

hello,

A friend give a NAD C520 cd palyer to repair ...

and then it reads a cd , the display shown 99 tracks... 😡

i remark when i put a cd with 4 or 5 tracks it's ok but with more than 10 tracks then the display showns 99 tracks..

have you a idea ? and/or service manual ?

Thanks...

pjoasti