[SOLVED] CDJ900 CD not loading and Eject

i'm using cdj900 i left the serato cj inside for too long more than a month

and when i power on the cd is not loading and have some sound (like its not working inside or something) and eject

what should i do? or do i need to repair the cj laser?  or is that possible to use cd cleaner to clean the laser?

i hope it's not a big problem hofully