asked Dec 6, 2012 at 4:03pm
Hp HP LaserJet 4

HP Laserjet 4m: 13 paper jam Please help me

I have an old laserjet 4m printer that keeps giving the paper jam error code. Every time I try to print it starts to warm up and turn the wheels making no abnormal sounds but then gives the error code. It doesn't even seem as if the paper was attempted to be fed. I have inspected under the toner cartridge and in the back panel and cannot find any paper in the unit. I tried printing from the feed tray in the front and the same error occurred. I feel like a sensor is out but I do not know where to look or how to test it. Again there are no clicks or knocking, just the normal warm up and the exit rollers turn for 4-5 seconds and then everything stops and it gives the error code.
Most likely there is a torn scrap of paper in the vertical feed portion of the pickup assy. Usually, you can see it by taking the paper tray out and tilting the printer backward and looking up into the channel. Also take the toner cartridge out, lift up the metal plate at the front and look under there.
by moe on Dec 6, 2012 at 4:44pm Add comment
I looked but I don't see anything, should I try manually feeding paper through? Would it be possible that the roller is old and isn't picking up the paper? It looks like there is a small black mark on the paper right where the roller is, but the paper does not look like it has moved at all. - sfsymphony92
Try watching it from the opening at the back of the tray. A flashlight would help. Then you can see if the roller does turn and if the paper is lifted up to the roller. If it does turn, you can pop it off the shaft and try washing it with water and drying it off. If you need a replacement roller, click on my name to email me for pricing and ordering instructions.
by moe on Dec 9, 2012 at 9:24pm Add comment
That worked so the roller IS bad. But the printed sheet has uneven color tone and a lot of the paper has turned grey, is that the fuser?
by sfsymphony92 on Dec 10, 2012 at 1:51pm Add comment
I assume you are talking about the mono laserjet 4 and your reference to color is grey scale. If so your description is that of a bad toner cartridge which will need to be replaced.
by dmzcompute on Dec 10, 2012 at 3:02pm Add comment
No, unfortunately it is more complicated but could need the same solution. The paper where there is no text is also grey. Once I get a new roller I will run a few more sheets through and repost, could just be from sitting for so long.
by sfsymphony92 on Dec 10, 2012 at 4:38pm Add comment
Issue is caused by a deteriorated drum wiper blade. They do go bad in brand new cartridges that have sat unopened for several years past the expiration date. You can test it by pulling the drum shutter back on the cartridge and turning the gear clockwise with your right thumb. The toner should wipe off and the drum should clean by doing so. If not, then the wiper is bad. You can also order a brand new OEM toner cartridge from this site as well. http://www.fixyourownprinter.com/specials/toner/hp/S206
by moe on Dec 10, 2012 at 4:55pm Add comment
I borrowed a refilled toner cartridge from the local company I use to refill them, but now the printer prints in code...it worked before but now even the test page prints about 15 pages of illegible garbage
by sfsymphony92 on Dec 20, 2012 at 10:29am Add comment
Test page from the computer or the Printer Control Panel? If from the computer, it's likely a driver issue. Delete and reinstall. - moe