Color Laserjet 2840: White Pages only

Hello!

2840 ceased print after changing the black cartridge. He just printed white clean pages. Copy or printing did the same. Scan worked, the machine responded and moved and it was available in the internal network. But he appeard as the UN 2830 type. I checked the web, read on the card reader cable looselyness, opened the machine and fixed it firmly. Over time, he returned to 2840 to the different machines. Perhaps, he moved with all the reportoire. But do not print.

First of all I thought to a problem with the drivers. Tried to start/stop, restart until the firmware to factory status. Nothing has changed. Downloaded updates, I found on the web and installed (USB). Same thing.

The second I suspectec on the cartridge, the black one (the only one I've been using and replacing for the past two years). The date in the box was 2014, but I guess it is the date of manufacture as the last one, I used said 2012 and worked until last week. I ordered another news that came yesterday morning, but nothing has changed. (He went to $ 100).

On the way, I consulted technicians the on the phone who told me to think about the drivers. Which I had already checked. End of this road.

So, third, I read for one, and I found the problem associated with only yellow/white pages and dirty sticky solenoid. I had a couple of coffees... and opened and closed the machine according to the maintenance manual. Just two screws on the left, all works with the mechanics and four hours of work. Nevertheless, almost finished... the cartridges could not be loaded as carousel slots went to place. (This has happened since the fourth grade, from 2007, but simply by pressing the button, finally, they went to the place, or the carousel was loose enough to put them in place with a smooth finger pressure). I could get to three cartridges in place, but could not with subsequently. This time, has no looselyness in the carousel. Again, found the clip on this forum thing and put it manually. Finished,

In the end, I'm back to the starting point: everything seems to work... but... only clean blank pages come out of the machine.

With this information, can give me some clues to start before I guess I have a heavy left sweep and $ 200 in ink unusable?

(I don't have a technical repair close to carry my machine and a month unless it would mean I have to buy a new one...).

Thanks in advance. Sorry for my English.

Hello! I DID IT! The machine is repaired. He even printed in color with empty for two years color cartridges! So I'll spend a few minutes to explain where that has happened just anyone can use. The problem was a misallingment of the caousel gears. Two of them.

http://www.teclar.EU/teclar.EU/alinhacion_esquerda_previa.jpg
http://www.teclar.EU/teclar.EU/alinhacion_dereita_previa.jpg

As I couldn't find a way to continue with the laser/scaner device index, which I opened it to see what it looked like http://www.teclar.eu/teclar.eu/laser_scanner_assembly_inside.JPG

following a hunch, I decided to try one last thing: re-align the gears of the carousel.

Once more, I took the manual, find the chapter and followed the steps. Everything I had done before took a third of the time, but the wind, unrouting cables, and especially the top plate made last even 3-4 hours (you never know if you want to break something). But the manual is very specific and if you are methodical organized and retain or photograph what you did anyone can take this machine apart to pieces and come up again. So I didn't.

But after you gain confidence I tried to put an end to the process earlier that I must made a mistake. When I had not yet placed the Assembly sweeping, nor any of the covers, I tried to test the machine.

Well, what followed were error59 and error57. Furthermore, as I have tried to set up the cartridges and imaging drum, I broke the imaging drum (if the right and left covers are not in place a lever in the imaging drum does not engage and you can not put it inside the openings if you try harder, you brake a nipple on the left side of the drum plastic; Eh_bien I pasted it yesterdey and today I will test if it goes...).

Affotunately, like Diogenes, I do not throw anything until he spent a period of five years quarantined (modern times) so I got an old Imaging drum which also let me know that I have broken in the most recent, could be put in place and proceed with the repair (even if it had been stored for more than two years He came back with a left of 5% of the work to be done...). So, what now? Back to the beginning and clunch and click all. Another two hours (now I reassembled everything, including the recent covers) tried a test engine: and worked! Even with colors contained in cartridges that did not spit out a single ink for two years! It's funny.

The specific repair was the misallingment. As you could see in the before pictures.

This was the position final alligment of the http://www.teclar.eu/teclar.eu/alinhacion_dereita_nova.JPG of speeds http://www.teclar.eu/teclar.eu/alinhacion_esquerda_nova.JPG

The point is that the way to align the large black gear with the small white gears is simple to shoot blacks out of their place, enough to run the as needed. By simple application of force. (Protect your fingers or you might get a slight cut). So, I'm wondering if I should have followed the procedure recommended by YouTube that does exactly the same thing without removing anything. https://www.YouTube.com/watch?v=xKwsYipQ0Ag The train left is perhaps not so easy to get around... but... because a lot of things you can break following standard procedure... I think about it.

One last thing. I didn't have a magnetic head screwdriver and I don't fix everyday machines so I made this http://www.teclar.eu/teclar.eu/aparafusadores.JPG which worked perfectly. Without a magnetic tip, no one can do that. Just to finish a few pictures of the parts and the machine http://www.teclar.eu/teclar.eu/solenoide.JPG http://www.teclar.eu/teclar.eu/pezas.JPG http://www.teclar.eu/teclar.eu/maquina_toda_desmontada.JPG

And thank you very much to all those who participated in the design of this machine. It's really rewarding to see how things are going without effort and can be dismantled and reassembled easily. I work in the construction sector, where almost everything must be broken to open it. Thanks again and God luck with your DIY repairs.

Tags: HP Printers

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