C454 - Paper comes out curly (approximately from the half)

[Laserbeam]

Re: C454 - Paper comes out curly (approximately from the half)

okay, this attempt I will do tomorrow!

[fishleg]

Re: C454 - Paper comes out curly (approximately from the half)

Check paper loop sensor above transfer roller, that be my guess .

[Laserbeam]

Re: C454 - Paper comes out curly (approximately from the half)

Now I've changed following components:

vertical Transport assy (which includes the paper loop sensor above the transfer roller)
both registration rollers and bearings
registration actuator
CL6 from the main drive assy (which drives the registration rollers)

The problem still exists!!! the paper Comes out curly!!!

[tsbservice]

Re: C454 - Paper comes out curly (approximately from the half)

Does the distance from leading edge to the first curl is the same on different paper formats?
Can't remember but did it curl from bypass tray?

I would try to cheat side door and figure a way to run copy without jamming up to the fuser to see paper drive.

[allan]

Re: C454 - Paper comes out curly (approximately from the half)

Could be faulty control from a shot motor driver. Try control board.

[Gaffers01]

Re: C454 - Paper comes out curly (approximately from the half)

Just a sudden thought, have you tried pulling the paper out when it starts to exit machine and see if it still curled. I remember on a c253 with million odd copies a few years ago at an engineering company they had a similar problem but only 2 ripples on the page and ended up being the exit tray. I ended up swapping with a different one.

[Laserbeam]

Re: C454 - Paper comes out curly (approximately from the half)

@ Gaffers01

yes, I had already made this attempt. As soon as the paper become visible, I pulled it out under strong tension.
But the paper is still curled. Thus, the possibility that the paper exit unit is the cause, is eliminated.

@tsbservice

yes, the distance from leading edge to the first curl is about the same on different paper formats. It is also curled from the bypass-tray.

[Laserbeam]

Re: C454 - Paper comes out curly (approximately from the half)

Problem solved!!!
The cause was in the reversal unit. Unfortunately, an error encured during my first error Analysis. I had a reversal unit installed from a BH C224.
However, this unit has a different gear (PN A161819200, 18T). The unit from BH C454 has a gear (A4FJ819200) with only 17 teeth.
Thus, the drive roller runs too fast and causes the curles in the paper.

[blackcat4866]

Re: C454 - Paper comes out curly (approximately from the half)

Congratulations on finding that. Only a tech could cause that. Such problems can be very hard to track down. =^..^=

[Barry97]

Re: C454 - Paper comes out curly (approximately from the half)

Problem solved!!!
The cause was in the reversal unit. Unfortunately, an error encured during my first error Analysis. I had a reversal unit installed from a BH C224.
However, this unit has a different gear (PN A161819200, 18T). The unit from BH C454 has a gear (A4FJ819200) with only 17 teeth.
Thus, the drive roller runs too fast and causes the curles in the paper.

I tried everthing here. I am still getting that wavey print out on paper. It does not Jam just does the wavy printout. I even changed the fusing motor. The outcome is the same with the other trays on the machine.

[techsxge]

Re: C454 - Paper comes out curly (approximately from the half)

I tried everthing here. I am still getting that wavey print out on paper. It does not Jam just does the wavy printout. I even changed the fusing motor. The outcome is the same with the other trays on the machine.

Same procedure for you: Stop the Machiine mid-Job and check where the paper turns curly.

[Kenny]

Re: C454 - Paper comes out curly (approximately from the half)

have you made sure ALL the gears are correct on the reversal unit

C454
(23) - A161819600Gear 18/26T
(18) - A161819701Gear 22/27T


Screenshot 2022-08-12 at 10-21-41 A4FJ - C454-PM.pdf.jpgScreenshot 2022-08-12 at 10-21-29 A4FJ - C454-PM.pdf.jpg

C454E
(16) - A0ED811800Gear 22/23T
(22) - A0ED813200Gear 22/26T
Screenshot 2022-08-12 at 10-21-03 A5C0 - C454e-PM.pdf.jpgScreenshot 2022-08-12 at 10-20-37 A5C0 - C454e-PM.pdf.jpg

[Barry97]

Re: C454 - Paper comes out curly (approximately from the half)

have you made sure ALL the gears are correct on the reversal unit

C454
(23) - A161819600Gear 18/26T
(18) - A161819701Gear 22/27T


[ATTACH=CONFIG]54326[/ATTACH][ATTACH=CONFIG]54327[/ATTACH]

C454E
(16) - A0ED811800Gear 22/23T
(22) - A0ED813200Gear 22/26T
[ATTACH=CONFIG]54328[/ATTACH][ATTACH=CONFIG]54329[/ATTACH]

I replaced the whole unit. print out still curls. There is no paper jam. While it is printing I did open to see where it starts, it happens after it passes the fusing unit.
PXL_20220812_135425536.jpgPXL_20220812_135433609.jpg
this is what i get.

I checked the gears and they all are fine. No wear on them.

[Barry97]

Re: C454 - Paper comes out curly (approximately from the half)

I replaced the whole unit. print out still curls. There is no paper jam. While it is printing I did open to see where it starts, it happens after it passes the fusing unit.
[ATTACH=CONFIG]54333[/ATTACH][ATTACH=CONFIG]54334[/ATTACH]
this is what i get.

I checked the gears and they all are fine. No wear on them.

I even tried the firmware update. Still wavy!!!!

[tech51]

Re: C454 - Paper comes out curly (approximately from the half)

Does it happen on all paper sizes? What size is that in your photo?