Kyocera 3501i uneven density on prints

[rapo_tech]

Hello

I swapped MK kit on this machine 1,5 months ago. Run necessary maintenance modes and updated firmware to v.05.07.0010_(2016-06-27)

Everthing was ok.

But now there are faded lines on black.
I added samples:
PG grey scale - PG GRAY SCALE.pdf | DocDroid
halftones calibration page - halftones calibration page.pdf | DocDroid
a copy made when scanner cover was open - scanned copy of open lid.pdf | DocDroid

All have same faded white lines in them.

Calibration page and the copy is printed Long Edge First.
Toner and all parts are OEM.

Ok first i removed developer and shaked the hell out of it nothing changed...
Ok so i executed U910.
Then executed U412 uneven density
The ON/OFF config was set to ON.

Then I tried U410, it printed out samples but did not recognize samples when scanned them and gave me error S001. Propably due poor quality.

Any ideas where to go next?

[BillyCarpenter]

Re: Kyocera 3501i uneven density on prints

Hello

I swapped MK kit on this machine 1,5 months ago. Run necessary maintenance modes and updated firmware to v.05.07.0010_(2016-06-27)

Everthing was ok.

But now there are faded lines on black.
I added samples:
PG grey scale - PG GRAY SCALE.pdf | DocDroid
halftones calibration page - halftones calibration page.pdf | DocDroid
a copy made when scanner cover was open - scanned copy of open lid.pdf | DocDroid

All have same faded white lines in them.

Calibration page and the copy is printed Long Edge First.
Toner and all parts are OEM.

Ok first i removed developer and shaked the hell out of it nothing changed...
Ok so i executed U910.
Then executed U412 uneven density
The ON/OFF config was set to ON.

Then I tried U410, it printed out samples but did not recognize samples when scanned them and gave me error S001. Propably due poor quality.

Any ideas where to go next?

You replaced 600k Maintenance kit?

Kit Includes:
(1) Drum Unit [302N993030]
(1) Developer Unit [302LH93034]
(1) Fuser Unit [302LH93102]
(2) Top Filter [302N433010]
(2) Left Side Filter [302LC33370]
(1) Belt Assembly SP [302LF94060]
(1) Disposal Unit Assembly [302N794020]
(2) Drum Duct Seal

You need to run the following depending on what you replaced:

Drum: U119, 464, 412, 410

DV: U464, 410

PCR: 930

Transfer Belt: 127, 464, 410


The 600k kit does not include the transfer roller. You may want to check that.

[rapo_tech]

Re: Kyocera 3501i uneven density on prints

You replaced 600k Maintenance kit?

Kit Includes:
(1) Drum Unit [302N993030]
(1) Developer Unit [302LH93034]
(1) Fuser Unit [302LH93102]
(2) Top Filter [302N433010]
(2) Left Side Filter [302LC33370]
(1) Belt Assembly SP [302LF94060]
(1) Disposal Unit Assembly [302N794020]
(2) Drum Duct Seal

You need to run the following depending on what you replaced:

Drum: U119, 464, 412, 410

DV: U464, 410

PCR: 930

Transfer Belt: 127, 464, 410

The 600k kit does not include the transfer roller. You may want to check that.

Thats the thing that got in my mind also. Cause i measured the black lines on printout - they were ~45mm apart and the manual indicates that transfer roller repetitive defect gauge is 44mm.

[BillyCarpenter]

Re: Kyocera 3501i uneven density on prints

Yep changed all the MK kit parts and run all those modes.






Thats the thing that got in my mind also. Cause i measured the black lines on printout - they were ~45mm apart and the manual indicates that transfer roller repetitive defect gauge is 44mm.

I think you have your answer.

[rapo_tech]

Re: Kyocera 3501i uneven density on prints

Ok i definatly check transfer roller.

But any idea where those drum duct seals supposed to go?

[BillyCarpenter]

Re: Kyocera 3501i uneven density on prints

Ok i definatly check transfer roller.

But any idea where those drum duct seals supposed to go?

Nope and I see nothing in the service manual about them. Someone else will have to help you out there.

[rapo_tech]

[blackcat4866]

Re: Kyocera 3501i uneven density on prints

I think Billy means the Second Transfer Roller, not the Primary Transfer Roller. You know, the one on the outer door? =^..^=

[rapo_tech]

Re: Kyocera 3501i uneven density on prints

I think Billy means the Second Transfer Roller, not the Primary Transfer Roller. You know, the one on the outer door? =^..^=

Well.. yes i was looking also the secondary transfer roller, but i did not find it
And i did not find it in manual... So i was assuming that this machine has none... and therefore i was wondering whats the point of transfer belt here :P

The belt is on the outer door.
belt.JPG

[blackcat4866]

Re: Kyocera 3501i uneven density on prints

You are correct, the monochrome MFP uses a transfer belt assembly with a transfer roller in the center,
and the color MFP uses a second transfer roller only.

The way Kyocera names their machines it's easy to confuse 3501i with 3051ci at a glance.
=^,,^=

[rapo_tech]

Re: Kyocera 3501i uneven density on prints

So today i updated firmware to latest v.07.09.0060_(2020-03-17)

And tried to set U464 toner thickness value to initial setting 750...

But still nothing changed.

I noticed that a pin in connector for the side door was a little bit different than others.
125209276_427952881943403_3303924130841155553_n.jpg125200233_996229897554055_6616908834240204498_n.jpg

It is like 1mm more outside than others... Tried to push it back in, but it does not move much.

Maybe thats the bad boy here??

[Luther]

Re: Kyocera 3501i uneven density on prints

did you try cleaning the laser glass ?

[blackcat4866]

Re: Kyocera 3501i uneven density on prints

Probably not. Often the manufacturer of those modular connectors positions one of the pins longer than the others. If you look closely I think you'll see that they're the same. I've noticed it, just don't know why. =^..^=

[Blizzoo]

Re: Kyocera 3501i uneven density on prints

Would that be a GND Pin?

[BillyCarpenter]

Re: Kyocera 3501i uneven density on prints

How about posting a picture of some test prints so we can see the problem?