Todd in Ohioasked Aug 8, 2011 at 10:18am
HP Color Laserjet 2840 spitting out blanks
I have an HP color laserjet 2840 that worked well until it needed a yellow cartridge. I purchased what I THOUGHT was an HP toner, but when it came in the mail discovered it was a knock-off. I installed it and it hasn't printed since. It kept saying I needed to reinstall the cartridges and that the other cartridges were empty.
I looked online and used the instructions to flash the RAM, but that didn't help (I had previously installed the max amount of RAM for this printer).
I purchased all NEW HP branded toner cartridges, but that didn't work. It said everything was good, but only spit out blank pages when printing/copying.
Today I installed a new toner drum ($$) hoping for this to fix it. It went through the calibration process fine. However, it still prints out blank pages. BTW, the scanner light works and moves under the flatbed just fine so that doesn't seem to be the problem.
I've invested a lot of money into this behemoth (purchase plus all new toners and drum) and would like to get it to work before chucking it out my window.
Any advice would be appreciated.
Todd in Ohio
I did as you requested (three times to make sure). I spit out pages with horizontal lines on the far RIGHT of the page evenly spaced and about 1/8 inch apart all the way down the right side. They varied from 1/4 to 1/2 inch in length. The right border almost abutted the right side of the sheet of paper and the left faded.
PS I'm off to work in a bit so won't be able to test, although I'll be able to read your post on my phone. Thanks again.
After reading the post about alignment issues I took a look at my printer and noticed it was way off. I must've really man-handled those cheap toner cartridges.
Turns out in my printer the solenoid is on the right not the left.
It took me about half an hour to complete. Now that I've done it, doing it again would probably take 10 minutes.
It now prints perfectly.
Thanks ever so much. This printer has been sitting in my closet for a year as a symbol of my frustration and now it's fixed. Wow
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 http://www.youtube.com/watch?v=ORIwO7O4cJ0
This video describes the procedure I quoted. http://www.youtube.com/watch?v=3D1Yd3gl7-k
BUT when I installed a new Windows 7 print driver downloaded from HP, it printed a configuration page with all colors (though no black -- not sure if that page had black on it).
So then I printed a Supplies Status report, and once again, got only some pale yellow. The supplies status on the device Ready indicator show full supplies, which it should since I just replaced everything, including the drum, all HP sourced. But like Todd in Ohio, I had previously ordered some refurbished replacements for low cost, and that's when the trouble started.
Is the fix the same, or is something else screwy?
Put everything back together and it will work just fine. Just about everyone I have seen where this happens it is just a portion of yellow that appears on the page. The other times you are missing one of the other colors.
1. What is the specific nomenclature for the replacement pad I need?
2. Do you have any photos or video of the parts and innards of the machine, especially the solenoid, or know where I can get a look at what I'll be looking for? It may be obvious once I get in there, but a picture is worth a thousand words sometimes.
Thanks again, looking forward to further advice.
I just bought a used HP 2840 and when I try to print in color I get a blank page. If I do an engine test, only the black lines print out, no colored lines. I don't know what the engine test means. I checked the alignment and it is correct. So is this a sticky solenoid problem?
(If so, I tried to take off the cover to get to the solenoid to have a look but I can't get all of them off....how do people manage to do it in half an hour?!! Please help!)
I am having the same problems on my Laserjet 2840 and would like to try to laproscopic procedure you referred to above. I have popped off the plate covering the hinge but am not sure how to remove the right side panel. Can you explain in more detail? Your help is greatly appreciated.
Moe- You are the man!
A little more detail for anyone who googles this: The right side cover has 2 screws at the bottom near the hand hold, take thos out and pull out on the bottom of it. The right hinge cover comes off- open up the lid and there are 2 places to unlock tabs which are attached to it, slip a screwdriver under and pull up slightly. After that is off the vertical right side panel can come off. Formatter box has 4 screws and several cables to undo. Then you can see the motor for the drum, 2 screws hold it on. After you take it off you can see, through the hole where it fits, the solenoid, arm and stop . Look closely at the space between the stop and arm and you should see remains of the foam bumper pad. Clean that all off by scraping, tweezers, and alcohol, and put in a new one. I used a piece of camera light seal foam but other things would work as well, just not too thick or the solenoid arm can't close enough.
I am about as far from technical as they come. I was HIGHLY MOTIVATED to make my ancient HP Laserjet 2840 print something more than just yellow, though! I needed a fax activity report proving I sent a fax when I said I did ... but fax reports printed a completely white sheet. I watched YouTube videos with no words (but really janky background music) and it was just too hard to take off the entire top of this monstrosity to get to it from the topside. I read Moe's laparoscopic approach and added Scott's detail along with 15 Google search windows open and the official repair guide pdf from HP. IT WORKED! I wanted to cry when I had to look through that tiny hole to clean all the junk off the solenoid arm and I dropped more than a few tiny pieces of electrical tape in places they should never go. What took you 30 minutes, took me 4-1/2 hours ... but I was victorious. THANK YOU!PS - But why is there always one extra screw?
I made this fix today at my printer. Im really glad to have fond this hint.
I cleaned the ledge & "L" arm and replaced the old pad with one layer of vinyl electrician's tape. Turns out I needed TWO layers of tape to separate the arm from the solenoid because residual magnetism from the solenoid wasn't releasing the "L" arm and the printer continued to send out blank pages. To test, hold the "L" arm against the pad and see if you can slide a piece of paper between the arm and solenoid core. That worked for me. I like my 2840 and it's worth it to fix.