03-26-2011 10:25 AM
On some, but not all, print jobs, horizontal black lines about half an inch wide appear on the printed page. The space between them seems random. What is causing this and how can it be prevented?
03-26-2011 04:16 PM
If it only occurs when printing black pages and if you print color pages you get color lines, then the issue is probably one of the motors on the right side. Part is not available from hp so you will have to obtain from aftermarket. If only black lines and no issue when printing color, then I would think the black toner cartridge has an issue.
04-05-2011 09:09 PM
I have the very same problem with same model machine that was brought to my shop. I don't know where to start. I replaced new toner/pc cartridges that customer brought along, worked fine during bench testing. but when customer came to pick it up, the horizontal bars started again. black and colors. David, what motor/s is the one you suggested to check? thanks.
09-10-2011 12:28 PM
I am working a printer for a customer and just come across the same thing.
Horizontal bands, edge to edge across the page...all colors appear present...about 2.5 to 3 inches apart as they go down the page.
Has anyone fixed this yet with the suggestion in earlier posts about a motor/gears? Can the person who suggested this tell me why replacing those parts will solve the issue?
09-10-2011 11:46 PM
Why? Because if one of those motors goes bad that is the result. HP did not originally provide the part which they do now since before the only way to repair was with a whole unit exchange. That did not work out when the unit was no longer in warranty. An guy at hp once told me the motor goes bad from using non-hp toners. Take it for what it is worth and from where the information was received.
11-25-2012 02:46 PM
Experiencing the same problem with black and colors. Too many issues can cause this problem and is just another issue HP won't admit to. With the cost of these machines it is just cheaper to buy another than loose time and funds servicing. I will call HP technical support and see if they can give me some advise on causes.....
11-25-2012 06:45 PM