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PDF: HP LaserJet III Repair

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times Source: carnot.pathology.ubc.ca // Topic: Printer
File Size: 321.39 kb // Total of Page: - Page(s)
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Short Desciption: First Check:. 1.) Switch off the printer and disconnect the power cord. ....
Comment: The above described repair also helps if the ?50 SERVICE? error is ...
Content Inside: Troubleshooting: HP LaserJet III Malfunction ,,50 SERVICE" Version Info: This is the second, optimized version of the troubleshooting description ,,HP-LaserJet-III_Repair.doc.pdf" dated mid 2003. Helping Internet Links: Additional information concerning this item can be found in the Internet at the following links: http://www.johannes-schubert.de/LaserDrucker/seiten/index.htm http://carnot.pathology.ubc.ca/laserjetiii.html http://carnot.pathology.ubc.ca/fusercon.pdf http://www.mxbtv.de/hp/hp.htm Error ,,50 Service": If the HP LaserJet III printer shows ,,50 SERVICE" after power up and the fuser is o.k. then maybe the ,,AC Driver / Safety Circuit" board of the ,,AC Power Module" is defect. This PCB with part number ,,RG11438" is made from cheap PCB base material which can render a conductive path between adjacent feedthrough holes if it is old or was over heated. First Check: 1.) Switch off the printer and disconnect the power cord. 2.) Check the fuser module (see below) or replace it by a functioning one. 3.) If this does not help then replace the ,,AC Power Module" or repair it as described below: Remove the ,,AC




1 Posted by eperritt
05 March 2008 at 11:30 AM
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