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Are you sure about the model number ? There are 1832, 1852, and 1872 but no 1842. For those printers, the media sensor is on the fuser. Check or replace the fusing unit.

I have a 2085 that has skew print only when using trays 4,5 and 6 from the LCT. This happens in print mode and copy mode. Trays 1, 2 and 3 do not have any skew. Today I did a complete rebuild of the...

Jamming in the areas you mentioned could be a number of things. A jam code would really help in determining you problem. Without the jam code to narrow down the problem, I would say there may be a...

Also a bad toner pump can cause this problem. It is located on the left/rear/upper side of engine. Check the 5990 logs for 360's and 406's. It is item number 1 in the figure below.


6018

If your customer is printing on labels the various paper guides in the duplex tray area could have gummy label buildup.

I work from 8 to 5 with an unpaid hour for lunch. Ain't no way I'm working through lunch without pay.

I agree with Lagonda, for goodness sake the machine is so old. I would make them suffer for quite a while before fixing the problem. How do customers expect company's to stay in business by...

I was a little vague on the part about reseat all cabling. I should have said reseat all interface type cables, ADF, LCT, communications, etc-no internal cables. Sorry about that.

I had that happen one time. I ended up replacing the power supply PCB2 AZ250017, item 1 in the JPEG. You may want to verify the CB near the finisher on the left rear of the machine and reseat all...

Any noise upon power up, printer goes through initial boot up/warm up routine or is printer simply quite with the one power indicator on ?

Well, looks like if you have already swapped the LCT, and registration unit, the only thing left is the relay motor M14 which drives paper coming in from the LCT.

I'm not sure if you are still having the problem, but I had the same thing happen to me. I was getting jam code 22 (duplex type jams) only from the LCT trays. I ended up replacing the LCT transport...

Do you have the jam code associated with the problem ?

Sounds like a short of the high voltage bias. I think there is a metal roller (in the transfer unit) which should be coated with a non-conductive material, sometimes black in color. Check to see if...

Replace the clutches and paper feed rolls for tray 1.

I would try changing the laser sync detector B1405301 or the polygon mirror motor AX060250, assuming that you have already cleaned the lenses, mirrors and detectors with a lint free cloth. Using a...

Nice to see a response on the final resolution. I wish more folks would do this. This gives everyone on idea on what kind of things fix problems that they might not have encountered before as opposed...

Dupont Krytox GPL-205 is a high temperature grease that is used for fuser bearings, pressure roll bearings, etc. You can purchase at this web-site Krytox lubricants,H-1 certified food...

With less than 100k, and on both machines, doubt the part would be worn, but hey as I have seen before, anything is possible. I know you said most of the time the problem doesn't happen when you are...

The part I am referring to is not the torque limiter. It is the steel shaft that is driven from the machine side of the ADF. You have to remove the rear ADF cover to remove this part. It is item #10...

Check the separation roller shaft. It has an anti-slip (one way clutch bearings). The bearings could be worn which would cause slippage.

Looks like a data transmission problem. Does this happen when you run diagnostic test samples ? If it does not, suspect the communications part of the printer, NIC card/network card.

Check out the pick up roller cam shaft. It has a torrington clutch-it could be slipping. This is the part that the pick up roller assembly is driven by on the rear side. Also check and clean the...

That looks like a drum drive unit problem. I would check all the belts, pulleys, gears and motor that are associated with drum drive, back side of the printer. It seems like the drum is slipping.

Try replacing the toner overflow sensor before replacing the expensive toner bank. It is the sensor that is mounted near the toner bank motor, in my manuals it is called out as sensor S15. It usually...