Canon IR Adv C2020 - only 1st print ok, next prints have blue streaks / is darker

**V-P** · 10-29-2014, 05:54 PM

Re: Canon IR Adv C2020 - only 1st print ok, next prints have blue streaks / is darker

A PG is better than those images... Especially some PG5 with cyan color (like 10 copies)

On the first pic there is insufficient cyan (the grass should look green - not yellowish)
On the second pic there is an abundance of cyan - also in the white areas. It shows that the cyan drum is leaking.

My comments on your replacements :

- Replaced Cyan drum - OK
- Replaced ITB (was 98%), did a 'stir', - Ok but not related
- Replaced Main Drive assy - Not related
- Firmware upgraded, replaced Cyan + Magenta drum, replaced sec. transfer roller -OK
- Replaced laserunit - Not related

I would trace the fault backwards.

I had a case with similar issues as yours and it was solved after replacing ALL drums at the same time.
I don't know how scientific this solution was as these machines are really tricky.

Most of cases replacing the drum is enough. Then cleaning the patch sensors.
Since is affecting only cyan - you don't need to replace common parts for all colors - just parts that affect that color.

If not the drum than try switching the supply units between the cyan and magenta.

Architects are very demanding people... and that machine has no custom calibration abilities.

**Nutstar** · 10-29-2014, 05:55 PM

Re: Canon IR Adv C2020 - only 1st print ok, next prints have blue streaks / is darker

ok, first question:

does this only happen when printing PDF's? have you tried using non PDF's and print colour prints?

I ask because I've had a few issues with PDF's in the past, which turned out was the method in which these PDF's are generated.

I also note that there is alot of colour coverage for this machine, this is an office colour machine not a full colour print box, it isn't designed for large scale graphics, you're customer will have better results with a 50 series for this type of document, although I suspect them having a 20 series means they decided to skimp on the budget for the colour device and your sales guy was over zealus on the sell.

I owuld also suggest going back to the machine, setting PG5 up, turn off each colour bar one, do 10 prints of each colour at the default half tone then up the value and do 10 prints at full tone and see what happens with each colour.

I'm not sure why you changed the main drive assembly, that seems a little off in terms of the fault, although you do look like your on route towards Main controller and DC controller.

**Nutstar** · 10-29-2014, 05:59 PM

Re: Canon IR Adv C2020 - only 1st print ok, next prints have blue streaks / is darker

oh and too add.

take out the delivery tray, then power cycle the machine and watch the ITB closly, see how the patches look, they should be solid blocks of colour, then print a PG 10 and make sure that the colours are complete on the ITB.

then have the user print the document and see how it looks on the patch.

yes you will need to catch the paper as it comes out but this is invaluable as a troubleshooting tool for the wierd and wonderful

**JPiek** · 10-29-2014, 06:46 PM

Re: Canon IR Adv C2020 - only 1st print ok, next prints have blue streaks / is darker

Originally posted by V-P

A PG is better than those images... Especially some PG5 with cyan color (like 10 copies).

Will do, and take it with me on the next visit

On the first pic there is insufficient cyan (the grass should look green - not yellowish)

That's interpreting the print

The customer said the first print is as it should be.

On the second pic there is an abundance of cyan - also in the white areas. It shows that the cyan drum is leaking.

Meaning the Cyan drum is DOA ?

- Replaced Main Drive assy - Not related
On advice of our Canon support engineer

- Firmware upgraded, replaced Cyan + Magenta drum, replaced sec. transfer roller -OK

Replaced the drum twice in a month, this would be the 3rd time in a month...

- Replaced laserunit - Not related
On advice of our canon support engineer

Then cleaning the patch sensors.

Sorry, did that too...

If not the drum than try switching the supply units between the cyan and magenta.

Magenta has occasional problems too : 1st half is lighter than sec. half (in print direction)

Architects are very demanding people... and that machine has no custom calibration abilities.

Just the full gradadtion adj. you mean ?

I'm afraid my boss will kill me, 3 drums in a month, since the issue comes back, again, and again, and again...

**JPiek** · 10-29-2014, 06:51 PM

Re: Canon IR Adv C2020 - only 1st print ok, next prints have blue streaks / is darker

Originally posted by Nutstar

ok, first question:

does this only happen when printing PDF's? have you tried using non PDF's and print colour prints?

No, on all kinds of fileformats, even on copys...

I ask because I've had a few issues with PDF's in the past, which turned out was the method in which these PDF's are generated.

Yeah, mee too

I also note that there is alot of colour coverage for this machine, this is an office colour machine not a full colour print box, it isn't designed for large scale graphics, you're customer will have better results with a 50 series for this type of document, although I suspect them having a 20 series means they decided to skimp on the budget for the colour device and your sales guy was over zealus on the sell.

99% correct... apart form the sell, the customer has the printer in lease from us...

I'm not sure why you changed the main drive assembly, that seems a little off in terms of the fault,

The printer gave cross-feed stripes on Cyan, canon gave us this advice. poss. problems driving the Cyan drum smoothly...

although you do look like your on route towards Main controller and DC controller.

Nice, even more costly repairs on our account

**JPiek** · 10-29-2014, 06:54 PM

Re: Canon IR Adv C2020 - only 1st print ok, next prints have blue streaks / is darker

Originally posted by Nutstar

oh and too add.

take out the delivery tray, then power cycle the machine and watch the ITB closly, see how the patches look, they should be solid blocks of colour, then print a PG 10 and make sure that the colours are complete on the ITB.

then have the user print the document and see how it looks on the patch.

yes you will need to catch the paper as it comes out but this is invaluable as a troubleshooting tool for the wierd and wonderful

Good advice, did this before because of a ITB that got damaged after even 1 print : Customer got a paperclip lodged under the deliverytray, scratching the ITB.
(yeah, they treat the printer very well

how the h*ll do you get a paperclip inthere ? )

**Rachid.Akli** · 10-29-2014, 08:03 PM

Re: Canon IR Adv C2020 - only 1st print ok, next prints have blue streaks / is darker

Hello,

It is a charging or a developing bias issue. After replacing the cyan drum, I would have replaced the HV PCB assembly: FM3-8175-000.

Good Luck.

Rachid

**JPiek** · 10-30-2014, 10:49 AM

Re: Canon IR Adv C2020 - only 1st print ok, next prints have blue streaks / is darker

Today i will give the customer another visit. I will excetute the tests as suggested and take some PG prints back with me....

**JPiek** · 10-30-2014, 01:46 PM

Re: Canon IR Adv C2020 - only 1st print ok, next prints have blue streaks / is darker

So i did some testing :

Printed 5 copys PG5 with dens. 128 on Cyan and saw the PG5 Cyan getting darker on the second half of the paper on copy 2->5
Did the same on dens 255 and saws the same but with less difference between the 1st and sec. half of the page.
The same with PG10, but als with less difference, magenta just prints w/o a problem.

Then I removed the deliverytray like Nutstar suggested and made some more PG5 prints. After each printjob i noticed the ITB had Cyan and greyisch lines and spots counterfeed on the surface. But not like the normal pattern, it looked more like loose toner... Only after a couple of cycles the ITB was clean again.

I can't post the PG's right now since i haven't been back at our office yet. Will do so asap...

**JPiek** · 10-30-2014, 03:43 PM

Re: Canon IR Adv C2020 - only 1st print ok, next prints have blue streaks / is darker

Ok, here are the PG's :

PG10-1-4.pdf : PG10 page 1 to 4
PG5-D128-1-4.pdf : PG5 in Cyan on dens. 128 page 1 to 4
PG5-D255-1-4.pdf : PG5 in Cyan on dens. 255 page 1 to 4

Hope these will help....

**Nutstar** · 10-30-2014, 06:21 PM

Re: Canon IR Adv C2020 - only 1st print ok, next prints have blue streaks / is darker

Originally posted by JPiek

Ok, here are the PG's :

PG10-1-4.pdf : PG10 page 1 to 4
PG5-D128-1-4.pdf : PG5 in Cyan on dens. 128 page 1 to 4
PG5-D255-1-4.pdf : PG5 in Cyan on dens. 255 page 1 to 4

Hope these will help....

ok, yes they helped.

I can't help but recall that you changed the Main Drive and it pulls me back to an issue I had with one of these boxes. it's not the same issue but it presented oddly and it may be similar cause.

Take back out the main drive and make sure you set it up correctly (see pages 298 - 303, in particular 301-303) and see if you note a diffrence.

I bring it up as there is a deffinitive line in change of tone on the solid Cyan blocks, I did ask for the other colours too and before doing what I suggest check them.

If I am right, you'll see a similar event happen on the other colours too, probably less noteable since its showing up on Cyan quite prominantly.

**JPiek** · 10-30-2014, 10:59 PM

Re: Canon IR Adv C2020 - only 1st print ok, next prints have blue streaks / is darker

Originally posted by Nutstar

Take back out the main drive and make sure you set it up correctly (see pages 298 - 303, in particular 301-303) and see if you note a diffrence.

These kind of replacements i do meticulously, i read the SM at least twice, and had it at hand when i replaced it. I hate doing those kind of repairs twice on a machine. I checked PG's when it was till open, they where fine, apart from the streaks in cyan.

I bring it up as there is a deffinitive line in change of tone on the solid Cyan blocks, I did ask for the other colours too and before doing what I suggest check them.

They are fine, sorry... Tha's why i didn't add them...

The machine has quite a history by now. Other 2020's i hardly know we have 'em out on lease, same for a couple of 2380's.
This one i have seen a dozen times and more in 3 years. Light prints, streaks, white lines, jamms, ITB damage, drum damage, early (40-70%) drum wear, damaged fuser.

If i can't get it fixed now, i think it's over for this one. We have a allmost new 5030 at the office, our servicedesk is taking about switching... The customer wants another one w/o problems.... But he probaly will not want to pay for a bigger machine...

Personaly, i don't think this will be the last problem with this machine, it had way to much battering.
Still, app. 160.000 prints is just sad for a printer...
With another customer, an 2380 is well over 360K, normal office use...

**JPiek** · 10-30-2014, 11:07 PM

Re: Canon IR Adv C2020 - only 1st print ok, next prints have blue streaks / is darker

Originally posted by JPiek

After each printjob i noticed the ITB had Cyan and greyisch lines and spots counterfeed on the surface. But not like the normal pattern, it looked more like loose toner... Only after a couple of cycles the ITB was clean again.

I think this is the issue... maybe it is 'just' al leaking Cyan drum ?

Apart from the fact that it's eating drums as fast as toners by now...

**Nutstar** · 10-31-2014, 09:46 AM

Re: Canon IR Adv C2020 - only 1st print ok, next prints have blue streaks / is darker

Originally posted by JPiek

These kind of replacements i do meticulously, i read the SM at least twice, and had it at hand when i replaced it. I hate doing those kind of repairs twice on a machine. I checked PG's when it was till open, they where fine, apart from the streaks in cyan.

They are fine, sorry... Tha's why i didn't add them...

The machine has quite a history by now. Other 2020's i hardly know we have 'em out on lease, same for a couple of 2380's.
This one i have seen a dozen times and more in 3 years. Light prints, streaks, white lines, jamms, ITB damage, drum damage, early (40-70%) drum wear, damaged fuser.

If i can't get it fixed now, i think it's over for this one. We have a allmost new 5030 at the office, our servicedesk is taking about switching... The customer wants another one w/o problems.... But he probaly will not want to pay for a bigger machine...

Personaly, i don't think this will be the last problem with this machine, it had way to much battering.
Still, app. 160.000 prints is just sad for a printer...
With another customer, an 2380 is well over 360K, normal office use...

ok, I would still take it back out myself, having gone in there before those pesky bits can still slip out but thats your call.

based on whats been done, you next course is the High Voltage PCB followed by the DC controller and then the Main control board in that order one at a time.

there is the bias transfer you could change after the High Voltage PCB (the part with springs that connects to the High Voltage PCB) but it's unlikely to be that, although that being said check them to make sure they aren't bent out of shape.

as an aside, comparing the IRA20XX series with the IRC2380 is unfair, more so when the replacement for the 2380 is the IRA50xx series.

Originally posted by JPiek

I think this is the issue... maybe it is 'just' al leaking Cyan drum ?

Apart from the fact that it's eating drums as fast as toners by now...

this rings a couple of alarm bells with me tbh, what is the monthly usage?

Canon IR Adv C2020 - only 1st print ok, next prints have blue streaks / is darker

Canon IR Adv C2020 - only 1st print ok, next prints have blue streaks / is darker

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