Question about HP LaserJet 2840 All-In-One Printer
I installed remanufactured yellow, magenta and cyan cartridges at the same time. Although I was printing black text just fine before the change, afterwards all four colors are printing on the right side only...fading from normal print on the extreme right to faint print in the middle and to nothing at all left of center. I have seen this problem described elsewhere and a discussion of a possible carousel misalignment. I am doubtful this is my problem, however, because the right color cartridge is showing when I open the panel after I press the cartridge rotation button. Can this nevertheless be a carousel alignment problem even anyway? And if it isn't a carousel alignment problem, what else could it possibly be? I have a service manual and the mechanical know-how to take it apart, if necessary, but that will be a last resort.....
Ok, for those who are having troubles releasing the clutch.
when i fixed my printer, i didnt even know there was such a release.
i fixed it in an other way (not for the faint hearted)
open the printer, remove all cartridges and photoconducter unit.
when misalligned, you will notice the guides where the toner cartiridges slide into place, left and right, are shifted.
the part of the printer body guides misalign with the carousel guides.
basically, what you need is a big screwdriver.
push the big screwdriver on the right side between the carousel and the body.
the black plastic ferriswheel will bend inwards, enough to go free from the little white driving gear wheel.
now move the right ferris wheel 1 notch into position.
ready. reinstall toners etc.
be carefull not to break it.
it does work, done it on 3 machines now.
the only reason why this happens which i could find,
is that there was a toner cartridge that is stuck.
feel if you can rotate the white cartridge gear by hand.
if not, that is your problem.
do not over fill your cartridge.
it is perfectly possible to refill, done that many times with these machines, but dont overfill.
ot maybe it is moist in the toner or something.
these cartridges dont have eternal life
good luck, dj
Posted on Jun 01, 2009
THANK YOU, THANK YOU, THANK YOU!!! This worked amazingly well and only took about 30 min.
Posted on Jul 16, 2008
UNBELIEVABLE.....THIS WORKED PERFECTLY!!
Posted on Apr 28, 2008
Hey there. I am a Custormer Support Engineer.
In about 99% of these problems, the solution is to reposition the carousel to the right position. If you whant to verify that this is really you problem, stick a thin screwdriver into the carousel clutch - top/right under the cartridge cover to manualy rotate the carousel. When a developing roller is in the closest position to the Drum look from the top straight down and you can see that the distance betwen left and right is different.
Posted on Mar 18, 2008
Great post! I instead used a metal rod and stuck the tip behind the carousel near the white gear and leveraged out the carousel just enough to move it back into place an wa lah!
Posted on Apr 20, 2010
I have repeted the step about 10-20 times but i can't get the white gear to rotate only one notch.
I have taken the screwdriver in the hole (top, right) and released the white thing but no different.
I have spent days on this problem and i want it solved now because i don't want to waste my days on printer problem ..
What have i done wrong?
I keep getting print on only laft page.
emil if neseccry: email@example.com
Posted on Jul 28, 2009
I have repeted the steps my the whole day but i keep getting print on only right side, and i can't get my white wheel to rotate ..
I can only get my white wheel to spin one notch not rotate :(
What have i done wrong?, im tierd of this have spent days on this problem!!, i went it solved now.
Posted on Jul 28, 2009
I had the same problem. Fantastic, easy to do solution! I would, however, recommend that after you vacuum the toner, that you use a soft toothbrush to remove remaining toner from the black gears, on each side of the carousel, and follow-up with a q-tip dipped in alcohol for stubborn toner residue. I wanted to get it done right the 1st time so I could get back to work. Also, to re-index the the carousel, it was easier to grab the black carousel "at the top - using a tilting motion", pulling inwards. I tried to pull straight out & struggled with it. Thanks for the great advice!
Posted on Jan 28, 2009
I had trouble releasing the break/clutch. I was able to find the small white plastic part inside the square opening, but didn't really see the second opening on the white plastic part. Inserting a paper clip into this second opening is what releases the break/clutch.
So looking down on the printer, find the white plastic piece as described above. The second opening on the white plastic piece looks like a tiny square black hole at the bottom of it. Again, that is where the paper clip is inserted.
I was in the correct place the first few times I tried, but I used a small screw driver that was not small enough, so it wasn't fitting into the tiny square black hole. I found that as instructed in the original reply, a paper clip worked perfect. I guess I thought it too small and flexible so I went with the screw driver... that was a mistake.
Posted on Dec 10, 2008
Thank you robertinski. You description was excellent. I had a copy of the service manual and was about spend a few hours tearing into the printer, taking off panels and parts to get to the gears, and you made it extremely simple to get to the gears. And thanks to smunteanu, you were also correct in double-checking the existence of the problem using the spacing of the roller. A few things I'd like to add:
Posted on Jul 04, 2008
Hello, i have this hp laserjet 2840 all in one printer it's working fine but when i give 10 to 12 print it will show tray1 is empty what i do for this problem it u have a solution please give me reply as soon as possible ok bye.
Posted on Apr 05, 2008
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