White Vertical Streaks on blue prints

[jonhiker]

rebuild/replace

this is correct. there are probably chunks of dv blocking the dr blade. some folks run a business card or plastic mylar to see if the image changes.

[davel]

What are the PM counts, replace the dev unit.
Other colours look crap as well.

[Kwaku01]

What are the PM counts, replace the dev unit.
Other colours look crap as well.

Please how do you check the PM counts?

Thanks
J

[keithxxiii]

The gentleman should check the service manual. No shortcuts please.

[davel]

You have to get into SP mode, if you don’t know that call a trained tech.

[Polarbear]

Hi Everyone,

Any help would be greatly appreciated. I'm getting white vertical streaks on blue...please see attached image.

Thanks in advance!

Attachment 43169

Definitely looks like clumps in the dev unit. +1 to all the previous comments in this regard.
Also could not hurt to remove the laser unit and clean all its optics as well, although that will probably only bring back some of the overall solidity, and definitely not cure the white lines.

When we get that on devices that have not made yield, we would dump the dev out through a fine sieve, to trap the clumps, then run a piece of paper between the mag roller seals to move all the remaining clumps out. If done correctly, it gives you your print quality back.

If it has done yield, replace the dev unit.

[Kwaku01]

Definitely looks like clumps in the dev unit. +1 to all the previous comments in this regard.
Also could not hurt to remove the laser unit and clean all its optics as well, although that will probably only bring back some of the overall solidity, and definitely not cure the white lines.

When we get that on devices that have not made yield, we would dump the dev out through a fine sieve, to trap the clumps, then run a piece of paper between the mag roller seals to move all the remaining clumps out. If done correctly, it gives you your print quality back.

If it has done yield, replace the dev unit.

Thanks for your post. I've done as recommended..."we would dump the dev out through a fine sieve, to trap the clumps, then run a piece of paper between the mag roller seals to move all the remaining clumps out", but streaks are still coming on prints after. I guess would have to replace the dev unit. Also, I forgot to mentioned that the black is missing on prints. Please any suggestions on the missing black on prints?

Thanks
J

[slimslob]

A sheet of paper will not correctly clean the doctor blade. It requires the use of a doctor blade cleaning tool. You can find the order number in the Pro 1357ex service manual.

[Oze]

Time to call in a REAL tech mate..!!!
You're not I.T. trying to do the customer a favour and fix it for them because the machine's on Do and Charge?

[Polarbear]

Thanks for your post. I've done as recommended..."we would dump the dev out through a fine sieve, to trap the clumps, then run a piece of paper between the mag roller seals to move all the remaining clumps out", but streaks are still coming on prints after. I guess would have to replace the dev unit. Also, I forgot to mentioned that the black is missing on prints. Please any suggestions on the missing black on prints?

Thanks
J

What happens if you print the test print grid in sp mode? Do you then get all the colours?


Sent from my SM-G950F using Tapatalk