radio replaced. CD will not work?? on 2004 Ford F-150

replaced radio with one that has CD and tape player and AM/FM. CD will not work. All else works.Is there a code that must be entered?? Tried to clean with pressured air cylinder, did not help. It is orig. Ford unit

Asked by for the 2004 Ford F-150
The cd player must be defective. If it were a code issue nothing would work!
thanks for the info. I can stop fooling with it.
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