Audio Systems: CAR STEREO BENCH TEST, bench test, cd mp3 player

Question
To close the loop:
I now understand the value of the bench test and will take this measure in the future.
However, if the problem I am experiencing does not reveal itself until the second track of a CD, it would have eluded the bench test, correct?

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Followup To
Question -
Good morning Tom
I really appreciate your prompt response.
My question is regarding the bench test itself, and specifically what test is run on the CD/MP3 player... for example, once the unit is powered and such, would a technician simply insert a disc of the various formats (CD, CD-R, CD-RW, MP3, and WMA; the formats that are supposed to be played) and verify output?  Or, does the test call for skipping among tracks, random play, playing a complete CD, playing for 30 minutes, etc.?  Is there a convention, a protocol in the industry for this test?
The seller suggests a hurdle to their warranty repair policy may be bench testing the unit PRIOR to installation, as well as professional installation.  I have the install part covered, but did not have the unit bench tested prior.  I'm trying to understand whether the problem I'm experiencing WOULD HAVE BEEN detected by a "standard" bench test so I can best position my return/repair claim.
Thanks again!

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Followup To
Question -
I purchased my new car stereo online from an "unauthorized" retailer.  Once installed, I discovered the CD player is on the fritz.  I'm getting ready to return it and utilize their warranty service (which isn't a problem, relative to my savings), but I see where they may invoke the "bench test" requirement.  My question is:  is there a "bench test" protocol, and what sort of test(s) would the CD player be subjected to?
THANKS!  
Answer -
Patrick,
The dealer may do a bench test on the stereo when you return it for warranty repair, they do this to be sure the stereo is broken and not working do to an install error. I would tell the retailer/dealer that I'm returning the stereo in exchange for a like model due to it NOT working.

TOM,
T&D ELECTRONICS
tdeser@zoominternet.net
Answer -
Patrick,
A bench test would run the CD player through all its play modes and test for good audio output on all channels. A bench test prior to installing would have saved you time and money, it makes sense when purchasing from an
unauthorized dealer. As for a bench test a GOOD shop would check all the electrical adjustments such as focus, tracking and laser output power etc.

TOM,
T&D ELECTRONICS
tdeser@zoominternet.net

Answer
Patrick,
A test CD is supposed to play through from start to finish. Most test CDs have several tracks on it that will test the ability of the laser to focus and track. Any alignment or focus problems would show up.

TOM,
T&D ELECTRONICS
tdeser@zoominternet.net