Bizhub C654e vertical color lines

[fntsy]

There are vertical Cyan, Magenta and Yellow separate lines and before every line the color registration is a bit off. I happans only on tick paper and on bigger formats then A4. The 3 lines on the page corespond to the position of the of the 3 color first PCR rollers in the TBU. The first page in a series is always good, every next page looks like in the attached image. Changing the TBU does not fix the problem.


bizhub c654.jpg

[rrrohan]

Re: Bizhub C654e vertical color lines

have you reset the print head skew adjustment and cleaned the IDC sensors?

[GIUBOSS]

Re: Bizhub C654e vertical color lines

There are vertical Cyan, Magenta and Yellow separate lines and before every line the color registration is a bit off. I happans only on tick paper and on bigger formats then A4. The 3 lines on the page corespond to the position of the of the 3 color first PCR rollers in the TBU. The first page in a series is always good, every next page looks like in the attached image. Changing the TBU does not fix the problem.


[ATTACH=CONFIG]46441[/ATTACH]

How many copies / prints has the transfer unit made? The drum units ??

[fntsy]

Re: Bizhub C654e vertical color lines

have you reset the print head skew adjustment and cleaned the IDC sensors?

Yes, I did that yesterday with no effect. I also did try with brand new transfer belt and drums.

[rrrohan]

Re: Bizhub C654e vertical color lines

id be trying HV boards.

[qbert69]

Re: Bizhub C654e vertical color lines

Check & see if there is a magnetic clutch in the ITB drivetrain...if it's stalling/slowing down & the drums are still rotating, then it's possible that is why the "build-up" toner line is being created.[emoji41]

Sent from my SM-N950U1 using Tapatalk

[Gift]

Re: Bizhub C654e vertical color lines

Also try a test run with a different type of thick paper before throwing all sorts of parts into the MFP^^^

[mga]

Re: Bizhub C654e vertical color lines

Yes, I did that yesterday with no effect. I also did try with brand new transfer belt and drums.

Was that oem parts complete units or individual parts

[fntsy]

Re: Bizhub C654e vertical color lines

Was that oem parts complete units or individual parts

Today I took with me parts from a perfectly working machine
1. Transfer belt
2. Imaging Units - Y, M, C
3. PC motor YMC (M16)
4. Transfer belt motor (M1)
5. Developing motor/YMC (M17)
The motors are connected directly and there is no magnetic cluches there
6. HV2 and HV3 (I forgot the HV1 - I think HV1 controls corona voltages and bias voltages)
Also cleaned the black PC encoder

All this did not fix the problem. Just to be clear - on A3 paper set to plain paper there is no problem. On A4 paper on any tickness - there is no problem. The problem is on A3 with tick paper.

[tsbservice]

Re: Bizhub C654e vertical color lines

Check & see if there is a magnetic clutch in the ITB drivetrain...if it's stalling/slowing down & the drums are still rotating, then it's possible that is why the "build-up" toner line is being created.[emoji41]

Sent from my SM-N950U1 using Tapatalk

I like the way you're thinking :. Very insightful, although I think this model don't have
such clutches.
In anyway BIG👍

[tsbservice]

Re: Bizhub C654e vertical color lines

Today I took with me parts from a perfectly working machine
1. Transfer belt
2. Imaging Units - Y, M, C
3. PC motor YMC (M16)
4. Transfer belt motor (M1)
5. Developing motor/YMC (M17)
The motors are connected directly and there is no magnetic cluches there
6. HV2 and HV3 (I forgot the HV1 - I think HV1 controls corona voltages and bias voltages)
Also cleaned the black PC encoder

All this did not fix the problem. Just to be clear - on A3 paper set to plain paper there is no problem. On A4 paper on any tickness - there is no problem. The problem is on A3 with tick paper.

fntsy, this is disgusting dude. If I remember correctly there are second motor involved in ITB cleaning brush drive. Could be some momentum bind there also.

[fntsy]

Re: Bizhub C654e vertical color lines

Forgot to mention the problem has nothing to do with the paper used. I stopped the machine mid-print and took out the Transfer belt - the lines are present on the transfer belt itself. We can rule out paper transport or 2nd transfer issues.

[mga]

Re: Bizhub C654e vertical color lines

The problem could still be a pcu or transfer unit when you replace with new parts copier will run setup with Resets values on machine ie charge voltage when you also set to think paper other values are set could be taking charge to high or to low

[Synthohol]

Re: Bizhub C654e vertical color lines

Just a thought, don't use the thick paper setting. Use special\user paper setting with the GM2 rating
See if that makes a difference. Hell, try envelope setting.
Also check the neutral to ground at the outlet, anything over 1/2 a volt is unacceptable and may be a ground issue.

[tsbservice]

Re: Bizhub C654e vertical color lines

The problem could still be a pcu or transfer unit when you replace with new parts copier will run setup with Resets values on machine ie charge voltage when you also set to think paper other values are set could be taking charge to high or to low

Mark is right here as usual.
OP see image quality troubleshooting in SM for color lines perpendicular to paper movement. There are which HVs can be bad.