HP 82143A Printer Self test?

[vassilisprevelakis]

Hi Kostas,

Is your problem related to the paper advance, causing some lines to overwrite the previous ones.

If this is so, then its not something that a diagnostic program will help you with. Its just that the O-rings that push the paper have deformed with age (having stayed in the same position for ages).

So my advice is to advance the paper a little bit every day, so that the O-rings have a chance to get back to their original round shape. If you see improvement after a week, keep doing it till the paper advances consistently. Then be sure to print something about once a month every month to keep the O-rings in shape.

**vp