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From: ries@VENICE.SEDD.TRW.COM (Marc Ries)
Newsgroups: comp.laser-printers
Subject: Re: HP LJII Error 51
Message-ID: <752@venice.SEDD.TRW.COM>
Date: 7 Aug 90 14:38:15 GMT
References: <9008061928.AA10175@crayola.cs.UMD.EDU>
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Organization: TRW Systems Engineering & Development Division, Redondo Beach, CA
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In article <9008061928.AA10175@crayola.cs.UMD.EDU> sher@BBN.COM ("Lawrence D. Sher") writes:
>
>My HP LaserJet Series II just went belly up with "51 Error", which the LaserJet
>Handbook says is related to a mirror alignment (or mirror obscured) problem. 
>Have others experienced this error?  Was it an expensive fix?  Is there a known
>cause?  A known precaution?  

 While I can not say that your situation is the same as mine, my HPII
 "died" with a "51 error" after I had installed a new lower cassette
 tray.  The only unusual thing I did (but required to do as per the
 manual) is set the printer on end to access the bottom of the IIP.

 I took it to HP, and they were never able to duplicate the problem.
 It's worked fine since then.  Supposidly, the only thing the tech did
 was to "re-seat" the boards.

 So, either it (only) needs it's boards reset or your in big trouble 8-)
 You might try driving it around in a car for a half hour or so.... 1/2-)