frequent paper jams LaserJet 4240

[Brad_Marks]

We are getting frequent paper jams on this printer.

I recently installed a maintenance kit, but no improvement.

Printer has printed 202,255 pages, and has had 16 jams in the last 3,218 pages printed.

Isn't this excessive?

Any helpful input would be greatly appreciated!

Here's the Event Log:

50     202240     13.01.00     PAPER FEED 1, PAPER LATE JAM
49     202240     13.05.00     FUSER OUTPUT, PAPER LATE JAM
48     202240     13.98.00     NON-SPECIFIC PAPER JAM
47     202221     13.01.00     PAPER FEED 1, PAPER LATE JAM
46     202221     13.06.00     FUSER OUTPUT, PAPER STOPPED JAM
45     202221     13.98.00     NON-SPECIFIC PAPER JAM
44     202097     13.20.00     PRINTER COULD NOT AUTOMATICALLY EJECT PAPER
43     201916     13.06.00     FUSER OUTPUT, PAPER STOPPED JAM
42     201916     13.98.00     NON-SPECIFIC PAPER JAM
41     201587     13.02.00     PAPER FEED 1, PAPER STOPPED JAM
40     201418     13.01.00     PAPER FEED 1, PAPER LATE JAM
39     201414     13.01.00     PAPER FEED 1, PAPER LATE JAM
38     201414     13.06.00     FUSER OUTPUT, PAPER STOPPED JAM
37     201414     13.98.00     NON-SPECIFIC PAPER JAM
36     201284     13.01.00     PAPER FEED 1, PAPER LATE JAM
35     201284     13.05.00     FUSER OUTPUT, PAPER LATE JAM
34     201284     13.98.00     NON-SPECIFIC PAPER JAM
33     200692     49 235F     Printer Error
32     200692     13.06.00     FUSER OUTPUT, PAPER STOPPED JAM
31     200692     13.98.00     NON-SPECIFIC PAPER JAM
30     200521     13.20.00     PRINTER COULD NOT AUTOMATICALLY EJECT PAPER
29     199037     13.98.00     NON-SPECIFIC PAPER JAM

[davidzuts]

If you installed the MK I assume you replaced both the pickup roller and separation roller for tray 2.  If you did not, then that is the first thing to do.  You will want to check out the backstop of tray 2.  Make sure the little arrow is exactly on the letter setting and not a bit forward as that will impede the movement of the paper up when the tray lifts.  Also always check the front part of the ream of paper that sit in the front of the tray to make sure it is smooth and I would fan it.  You may want to maybe try another paper vendor just to make sure the paper is not causing issues.  To be honest 16 jams over 3000 pages which is 6 reams of paper is not that excessive but is more than normal.

[ian2785]

Another likely cause of jamming is the feed rollers behind the manual feed tray. If you remove that unit theres a set of EPDM rollers behind (Youtube is your friend for this).

These rollers become smooth and cause the paper to slip occasionally or fail to feed all together. If you get platen cleaner and a microfibre cloth these can be cleaned up.

As the other poster mentinoned if you havent already changed the feed and seperation rollers.

The fuser unit can also cause their fair share of jams, but if youve fitted a MK this shouldnt be a problem as you will have changed it when doing the kit.

[ian2785]

Another likely cause of jamming is the feed rollers behind the manual feed tray. If you remove that unit theres a set of EPDM rollers behind (Youtube is your friend for this).

These rollers become smooth and cause the paper to slip occasionally or fail to feed all together. If you get platen cleaner and a microfibre cloth these can be cleaned up.

As the other poster mentinoned if you havent already then change the feed and seperation rollers.

The fuser unit can also cause their fair share of jams, but if youve fitted a MK this shouldnt be a problem as you will have changed it when doing the kit.

Your getting alot of paper late jams which means its not where it should be when the printer is looking for it. This does suggest the paper is slipping at some point of getting caught.

13.01.00 normally refers to a jam in tray 2. So id definatly be looking in the above mentioned areas.

Hope this helps.

Sorry for the double post. I submitted my first one to soon.

[Brad_Marks]

Thanks, guys.  I'll give all the rollers and the tray pick-up a good once-over and replace what I think might help.

I appreciate the quick and helpful response to my querey.

Regards,

Brad

[SHThompson]

Did the fuser output jams start before or after you installed the maintenance kit?