[Misc] KM-5050 faint copies.

[cokwax]

I bought KM-5050 used. Produces faint copies from day 1 I received it.
Even at +3 density, the copies are still not satisfactory. Tried New Toner -same result.

[MDR24]

Re: KM-5050 faint copies.

Is this happening on copies only or also prints?


Firstly make sure Eco Print isn't selected as ON

Print a belt off using U89 to see what the internals are like.

Are you using Genuine toner?

If the internals are faint, check the T.C and Dev unit.

[Kyo fan]

Re: KM-5050 faint copies.

Clean the corona wire and the grid.

[leroyal]

Re: KM-5050 faint copies.

I bought KM-5050 used. Produces faint copies from day 1 I received it.
Even at +3 density, the copies are still not satisfactory. Tried New Toner -same result.

Make sure the springs haven't fallen off of the transfer roller holder.

[stevena86]

Re: KM-5050 faint copies.

Make sure the springs haven't fallen off of the transfer roller holder.

This is the most likely scenario with these copiers.

Open the left side door, and there will be a black spongey looking roller in the middle of the part that folds out. If you press it on each end, it should push down and spring back up. Without the springs (can be missing just 1 as well), you won't get proper secondary transfer onto your paper, and thus faint copies/prints. 302GR93281 is the part number

[blackcat4866]

Re: KM-5050 faint copies.

That about covers it. =^..^=

[cokwax]

Re: KM-5050 faint copies.

Happens to both copies and prints. Internal prints using U089 equally faint. Changed Charger unit in vain. Transfer roller springs Ok.

[blackcat4866]

Re: KM-5050 faint copies.

How about the OEM toner or toner buildup on the mag roller? The toner cartridge must have the holographic Kyocera sticker on the front.
How about Eco Print? I can be set in both print and copy mode.

=^..^=

[subaro]

Re: KM-5050 faint copies.

Ok, Lieutenant Columbo is on this case now. So you bought the copier used, yes ok. What is the meter read for the machine ?. If it's past due the pm cycle, then you will have to do one. the pm for this machine i belive is 500k, but sometimes drums, devs ect. are replaced individually before the pm cycle sim u000. Then again the pm may be required before the pm cycle.
You can't beat a dead horse to the finish. If the drum is done you cannot bring it back to life. They could have easily switched the drum and dev from another machine and give you old ones. who knows.. you said from day1 right. used car sales and used copier sale they have a few things in common.

Here is a tip, there is something you can do that may improve the print quality providing the high voltage and the boards are ok.
read the user manual, its in there.
I had to edit this post, because of the volume of pages of the manual. so instead it can be done from system menu at the control panel.

[Reed]

Re: KM-5050 faint copies.

I would try replacing the entire transfer roller assembly. If that doesn't fix it. I would replace the entire Developer unit or vacuum out the old toner out of the Developer unit and set up with new OEM toner. If they were using compatible toner the solids are sometimes more gray instead of a crisp black.

[Gar the pilot]

Re: KM-5050 faint copies.

And sometimes the laser slit glass and even Mirrors are dirty. Poor lazer = poor print/copy. But the whole Doc gap cleaning and using OEM toner ETC would be the other major thing
I have followed up a couple of My tech's to find dirty laser slit glass dirty enough to give crrappy copy

[subaro]

Re: KM-5050 faint copies.

1 u000 [ always print first thing ] this is the setup histroy and meters

2 u89 internal print quailty checks.

3. system menu charge wire then drum refresh

4. remove old toner from dev unit, inspect and clean mag roller with alchohol then install new toner and do 130

5 laser external slit glass cleaned. but every tech should know this, they should mention it in the steps they took.

6 if the drum and charge wire are ok, your internal prints and pc to machine prints should be as good as new.

always keep a used drum with a sample of its output for reference and situations like this. it is easy to snap in and eliminate from the equation.

All the post here i think are relevant to solving this problem. Mr. Reed earlier post in this case i think will solve this problem.
But again, if the drum and charge wire is gone, nothing you can do but replace it.

[cokwax]

Re: KM-5050 faint copies.

Ok Thanks all.
A new Dev unit solved my problem.