Tek 780 Please help me!!!!

[dsimages]

OK, this is a long story but bear with me. I have a 780 which basiclly blew up my magenta cartrige while printing. Im geussing that the cartrige stayed open and put toner throughout my whole printer. After spending about three days cleaning the printer, the prints were coming out with too much magenta on them. I tried all the settings on the printer to no avail. I then proceeded to the fuser roller and found that it looked like the waste nossel was plugged. After spending a few more hours cleaning it, I put it back in and now I recieve an error 12 (Image density error) Is there anyone who can help me with this, or even know someone in the Phoenix, AZ area who I can call to have come and fix this at a reasonable rate (other than xerox). Any help would be greatly appreciated.

 

[marty5261]

The error 12/density error is probably caused by the magenta toner spill you experienced. The ensity sensor is located inside the imaging unit cavity. It sits just above the black accumulator belt and in front of the revolving developers. You maybe able to clean it in place by using a vacuum and maybe some alcohol. It is easier to clean by removing, and there is less chance of damaging the accumulator belt. remove the front cover, then the black inner cover. the density sensor sits on a metal rod and is held inplace by a e-clip which can be seen once the black inner cover is removed. Disconnect the wiring harness and remove e-clip, holding the metal shaft slide it towards the back and when it clears teh hole you can slide it out. Take note of the wire routing for the density sensor and how the rear of the shaft fits in to the slot in the back. Hope this helps.

 

[Dacurve]

It might not be the density sensor, but try to clean anyway.
If there is not enough developer in the developper unit, the density sensor will see this and cause an error as well.

Try power cycling the machine load of times and if this does not help, replace the developer assembly and developer beads. Just replacing the developer beads might be good enough though.

 

[Lasergod]

Is this related to 006-372 code on 790?

 

[chiport]

I'm not a tech; just a user looking for some answers but saw your post and received the same error message, after using the pressurized air can to clean dust out of my 780. After many power off/on's still received error message. Took covers off and located density sensor but was too scared to try to remove it, so I shot it with air to clean off the toner dust. Put covers back on and it worked!! (Much to my amazement.) Now I have new problem -- streaking on printouts. Think is a bad accululator belt. Any suggestions? Don't want to pay $600 to fix a printer I bought for $1100. Thinking of buying anothe r780 and using it for parts. Any thoughts?

 

[panamaszr12]

I need more information. I am tryint to find the clip and belt you are speaking of. can you give a step by step process of how to do this?
Panama