Bizhub 185 Interesting printout issue

[Obtex]

I got this issue i never seen before and i cant get it to print normaly again.
On a text page it seems like theres a uneven toner density, but when i print the test page from service mode it shows some interesting patterns. (test page attached)
I`ve tried to clean the laser unit, clean the whole copier, replaced the OPC cylinder, replaced the wiper blade, replaced the transfer roller. Tried to change Vg Ig voltages. Nothing seems to help.
Can please someone help me?
I need this copier to get working ASAP

38839

[Flash]

Looks like a transfer problem. Try stopping the machine during a copy and see if you have a good image on the drum.

[Synthohol]

looks like what happens when generic toner is used.
can you confirm OEM toner or dirt in a bottle?

[Obtex]

It's a original toner.

[Synthohol]

you said you replaced the drum, did you replace the developer too? try to always replace them as a set.

[Obtex]

Yes did that too. And did a auto adjust atdc. No change
Stopping mid print with the same test page - 2018 02 12 09 20 01 — imgbb.com (https://ibb.co/iO38gS)

[Obtex]

Looks like a transfer problem. Try stopping the machine during a copy and see if you have a good image on the drum.

https://preview.ibb.co/d7heo7/2018_02_12_09_20_01.jpg (https://ibb.co/iO38gS)

With the same test page.
Ive replaced the transfer roller assembly... still this

[Obtex]

Anyone?

[mascan42]

Definitely looks like a transfer issue. The lower part of the drum (before contact with the paper) is solid black but is spotty after that, so not all the toner is being transferred to the paper. Check the transfer roll, contacts & voltage.

[Obtex]

I replaced the transfer roller, cleaned the spiky strip with alcohol , checked the connections

[tinnyjay]

Anyone?

If you changed drum and developer you have to have a look at the laser then.

[D_L_P]

Anyone?

Have you changed the developer unit?

[Obtex]

Dont have a unit on hand, but i did replace the developer itself.

[jqueen]

Looks to me like a transfer belt and transfer roller issue. I had this same problem with a CS 400ci. Check to make sure that the transfer belt and roller are in contact with each other. It could be that the transfer roller guide on the transfer belt might be amiss...

[Phil B.]

you said you replaced the drum, did you replace the developer too? try to always replace them as a set.


yeah looks like it could be the developer .. wonder what the counts are on the machine?

[Obtex]

its only 10k

[Obtex]

Looks to me like a transfer belt and transfer roller issue. I had this same problem with a CS 400ci. Check to make sure that the transfer belt and roller are in contact with each other. It could be that the transfer roller guide on the transfer belt might be amiss...

This model doesnt have a transfer belt, it has only a transfer roller wich i allready replaced with a new one.

Can someone tell me how or where to check the voltages ?

[Obtex]

Bump

[Phil B.]

Bump

this site doesn't do anything special when you " bump" a thread

[allan]

Make really sure the transfer voltage is getting to the transfer roller.
So its not making all black prints??

[Phil B.]

Can someone tell me how or where to check the voltages ?

how do you normally check voltages?

on transfer you would read it from the contacts to frame

[michas778]

Hello,
if the problem was solved please write what caused that problem.

Regards,
M.

[Obtex]

The issue was not solved, client was not keen on waiting and bought another one