You can take it apart to get the CD out. It requires a very small set of screw drivers, and be very carefull.
I've taken my alpine apart twice. First time it was just a warped CD, nothing wrong with the unit. 2nd time, there was nothing wrong with the CD. I got it all back together, installed again, only for the next CD to jam. Took it to an authorized service center, they put in a new servo for $75 and it's like new.
Good Luck

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Alpine CDA-9887, TUA-T500HD, CHA-S634, CHA-1204 & KCA-410C
Pioneer TS-A6981, 6 x GM-5100T
Kicker 2 x CVR15,
MBQ RCE-216
PG MX2
Soundgate LanStar1
PAC SWI-ALP