Question about HP DesignJet 500ps (42 in.) InkJet Printer
Double line on printing maps.if it is a text, words are double writing sometimes
I wrote in about this problem earlier and have found the solution to my problem. There is not notes in the manual nor are there any cautions in any instructions for this procedure and of course HP was as useless as they always are. In my care I found that when you remove the carriage to replace the belt that when you remove the shims for the slider rod on the left and right side of the carriage that it is very important not to mix up which one was the Left and witch was the right. Of course the shims can only be inserted one way but will fit either side. if you look at them one half is fatter then the other so if you reverse them then the carriage is loose so it slightly shifts when the carriage goes from right to left making it impossible for the line sensor to read the marks properly. To fix the problem there is no disassemble required just move the carriage to the center and remove the screws that hold them then slide them out and swop sides put the screws back.
Posted on Sep 19, 2008
Check the carriage motor gear (drives the belt) make sure the remains of the old belt have been cleaned out and that the belt is tensioned properly.
If this don't cure the fault, replace the carriage assembly.
Posted on Jul 21, 2008
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