Canon IR6570 Blank Bands on copies

[SAZ911]

Hi fellow tech's

Need your help with a little issue I'm having with a Canon IR6570 that is producing blank bands on the copies from top to bottom (portrait). I know its got something to do with the Developing Assy, either its shorting / arcing, so ive gone through the coronas in the various assemblies and all seems well. the problem is intermittent and will happen roughly every 5-15 copies/prints

just wondering if anyone has come across this before, and knows something i don't.

I have attached some sample sky copies I made...

thanks as always...
0005_001.pdf

[elamurugu]

Re: Canon IR6570 Blank Bands on copies

paper separation charge drop, cheak the transfer carona endblock.

[mediakarya]

Re: Canon IR6570 Blank Bands on copies

corona wire cleaner

[COPIERTEC ASSOCIATES]

Re: Canon IR6570 Blank Bands on copies

When such a scenario happens,is there any sound made by the machine?
If not check on the drum unit assembly,there could be an abnormal load
on the waste toner system.
Sometimes there is a belt at the machine rear which drives the waste toner
system,when it is worn out it can also cause that scenario.

[canonbundy]

Re: Canon IR6570 Blank Bands on copies

I would run with the Corona Wire Cleaner suggestion - The Cleaner can get stuck as it performs it's Wire Cleaning, try Wire Cleaning to bring the Cleaner back to home position SETTINGS/REGISTRATION > ADJUST/CLEANING > WIRE CLEANING.

[SAZ911]

Re: Canon IR6570 Blank Bands on copies

paper separation charge drop, cheak the transfer carona endblock.

Hi All,

thanks for your replies.

it was the transfer corona assy, re-strung corona and thorough clean.......A for Away...

[Rachid.Akli]

Re: Canon IR6570 Blank Bands on copies

I would run with the Corona Wire Cleaner suggestion - The Cleaner can get stuck as it performs it's Wire Cleaning, try Wire Cleaning to bring the Cleaner back to home position SETTINGS/REGISTRATION > ADJUST/CLEANING > WIRE CLEANING.

The attached print is an A4 size not A4R.....

Rachid

[Rachid.Akli]

Re: Canon IR6570 Blank Bands on copies

Hi,

Clean or replace the developing clutch CL1.

Rachid.