asked Oct 31, 2015 at 12:14pm
Hp HP Color LaserJet 2840

I replaced the black toner cartridge and now the printer shakes though it is fine when I set it for grayscale only prints

Does anyone know what's wrong? All cartridges are HP. The black ran out and I replaced it. I did notice that it seemed a little difficult for me to drop in the cartridge, which I have never noticed before. I did a mental double-take but then clicked into place. When I tried to print, it did print, i.e. no error messages, but it made a shaking or thumping noise and the colors were off. When I did "print a test page" I got a blank page with a small yellow smudge. (The yellow cartridge is low but still has pages left). I can get the printer to print well without shaking and without any other of these "new" problems (again occurring for the first time after I replaced the black toner) by setting it to print in grayscale. I have a very low total page count - under 23k. I have a newer printer xerox colorqube but I really want this one to also work, and I use it for copies.

Any help would be very much appreciated.

You need to unlock the carousel. Once you unlock it and remove the toners, ignore all the rest of the crap. Pick any color and align the cartridge slot on the left side like you would have it to remove the cartridge. Then pull out on the gear towards you on the right and drop it so the right slot is lined up as well. You can get it aligned pretty close by just eyeballing it visually. I've never seen the left side go out of alignment, just the right, so this method has worked for me everytime.

Use this video to unlock the carousel
This video describes the procedure I quoted.

by moe on Nov 1, 2015 at 12:11am Add comment

Thanks for your reply and the links. I will do this today or tomorrow and report back!

by SharonEF on Nov 7, 2015 at 12:55pm Add comment

hey Moe:

I can't try this fix yet because my colorqube has decided to power on and off endlessly, and I can't risk being without a usable printer if I screw up the HP 2840 further. At least that one is printing in black and white right now.

But - if you don't mind - I have a question which presumably will get answered soon enough after I am able to try your advice.

I have been reading your posts and saw all the ones about fixing a carousel that has gone out of alignment as well as the ones about deterioration causing the solenoid release plate to stick. I understand the latter is a bigger pain to address.

Would you tell me what about my description of the problem makes you think the problem is with the carousel alignment instead of the carousel brake solenoid?

Obviously I hope it is the alignment, and I guess I am just seeking encouragement before I put it to the test.

I appreciate it.

by SharonEF on Nov 8, 2015 at 1:21pm Add comment