MP C2051 When printing in A3 you make stripes, but not when copying.

[UNICORNico]

Good Technical Companions.
I have been with this curious problem for a few weeks, and I need a 2nd opinion. (I know the model is already somewhat old)
I put you in situation:
- When the client prints in A4, there is no problem.
- When printing in A3 (always sheets of 80g.) and more than 2 or 3 consecutive pages, the device makes a strange noise (similar to a friction or rubbing), and accompanying it, the defect that I share by the link.
- As you will see in detail, there are some black lines, which baffles me.
302 Moved

- When they copy to A3, that failure does NOT, and neither does the noise. Regardless of the number of copies.
- The device has already been changed:
PCUD Black (Image Unit + Developing Unit)
Transfer Unit + Cleaning Unit
Fuser Unit (for testing only)
Drive Unit Drum and Development

- Just in case the Firmware are updated to the latest version.

Any suggestions?

[slimslob]

The main difference that I know of between printing and copying is spooling print jobs to the HDD. The noise could be an indication that the HDD is getting ready to fail.

[UNICORNico]

The main difference that I know of between printing and copying is spooling print jobs to the HDD. The noise could be an indication that the HDD is getting ready to fail.

Noise does not belong to the HDD. I can confirm, it's not a rubbing noise of reading heads, or anything like that.

In fact it is a noise that can be perceived/heard as if it came from the Transfer Band or its Cleaning Unit. Or the Fuser Unit, when the Thermal Pad dries out.
Hence it is striking, because it only does it when printing (several pages in A3) and never when copying (several pages in A3).

P.S.: I will try prints and the HDD disconnected. It would be strange if the machine stopped making noise and the black lines defect (difficult to describe in text) because it did not have the HDD running.

[emiliorsg]

Sounds like you have a vibration from a hard drum plate or PTR or ITB unit. In bk you get the same error?

[UNICORNico]

Sounds like you have a vibration from a hard drum plate or PTR or ITB unit. In bk you get the same error?

That's what I've been thinking. But as mentioned above, these pieces have already been changed.
And the weird, weird thing is that it's only when printing.

The sound, when the defect os generated. Only when printing.




When photocopying, the noise does not appear, nor does the defect.



On a mechanical level it's the same job, that's why it has me baffled. Obviously the HDD thing can't be.

[TonerMunkeh]

It looks like you are running the printer function on a thick paper setting, slowing the machine down. In copying is the machine running at it's normal speed? If so it sounds fuser-ish to me.

[sandmanmac]

It looks like you are running the printer function on a thick paper setting, slowing the machine down. In copying is the machine running at it's normal speed? If so it sounds fuser-ish to me.

100% agreed.

Read through this thread.....
MPC2551 noisy fuser

[slimslob]

That's what I've been thinking. But as mentioned above, these pieces have already been changed.
And the weird, weird thing is that it's only when printing.

The sound, when the defect os generated. Only when printing.




When photocopying, the noise does not appear, nor does the defect.



On a mechanical level it's the same job, that's why it has me baffled. Obviously the HDD thing can't be.

On a mechanical level it is not the same job. The motors are running at different speeds. If you are using a computer instead of a hand held device you can run both videos simultaneously and see the speed difference. The noise is a motor howling and the image jitter is the vibration caused by the defective motor. You can see the vibration in the paper as it exits. The clunk at the start is most likely gear backlash noise as the motor changes speed. Most likely the fusing/exit motor.

[slimslob]

It looks like you are running the printer function on a thick paper setting, slowing the machine down. In copying is the machine running at it's normal speed? If so it sounds fuser-ish to me.

According to the specifications:

20 ppm in Plain/Middle Thick mode
12.5 ppm in Thick/OHP mode (depending on paper type)

Watching both videos simultaneously you can see that the copy speed in nearly double. Paper type is being set by the driver.

[Maged_elagamy]

It looks like you are running the printer function on a thick paper setting, slowing the machine down. In copying is the machine running at it's normal speed? If so it sounds fuser-ish to me.

I can't agree more

double check the fusser unit