[Dead] Just want to get your thoguhts on this for now: c284e

[techsxge]

Hi,

i have a customer with c284e machine.
Got called in last week first because of a red line vertical to print direction, in about the last third of the page. I cant attach a real image because this would put my customers name out. so i'll attach a simple paint drawing.
It was an easy fix i thought and switched drum unit cyan and magenta, boom prints look fine, made a gradiation adjust just to be sure and customer was happy with the result.

So a day later, not even 24h gone by, i got called in to the customer again. Color mismatch on all their prints (Orange lighter than before). Gradiation Adjust gave out expected good colors so i got confused. Grabbed two new drum units from the workshop and replaced the yesterday switched drum units cyan and magenta. This is where everything went downhill with 500 kmh
Still have that color mismatch but now all their prints look fcked up with a red and blue background.
I noticed the bad image formation on blue with m test prints.
So i took out all drum units and developers, checked for any extensive toner dust and cleaned the machine as best as i knew. Because of the print quality i saw on blue i also tried to clean the laser. However, whatever i tried, nothing fixed the image issue.
Not even reverting back to the first units used fixed this.

S55C-923100510090.pdf
S55C-923100510080.pdfimage_error_1.png

[copyman]

Re: Just want to get your thoguhts on this for now: c284e

Did you clean the IDC sensors under transfer belt before doing gradation adj? Are toners, drums, developer OEM?

[tsbservice]

Re: Just want to get your thoguhts on this for now: c284e

Normally those machines are so good in overachieving parts life that sometimes we forget where and when we changed something ☺️

We will need proper samples in order to help you best.
By proper I mean MML, halftone and gradation patterns. For example there is good possibility replacing ITB and cleaning IDC sensors x2 solve your puzzle.

Remember Cxx4e is simple and very reliable machine until someone rides it way past normal.

[techsxge]

Re: Just want to get your thoguhts on this for now: c284e

Did you clean the IDC sensors under transfer belt before doing gradation adj? Are toners, drums, developer OEM?

Thats nuts, i actually forgot about that sensor.
I might have a chance to go to the customer to quickly clean this later today as he is located in the same street.
Thanks, this could atleast be part of the issue.

All parts are oem

[techsxge]

Re: Just want to get your thoguhts on this for now: c284e

Normally those machines are so good in overachieving parts life that sometimes we forget where and when we changed something ☺️

We will need proper samples in order to help you best.
By proper I mean MML, halftone and gradation patterns. For example there is good possibility replacing ITB and cleaning IDC sensors x2 solve your puzzle.

Remember Cxx4e is simple and very reliable machine until someone rides it way past normal.

I might be able to get new halftone and gradiation done today. MML i already printed out.
Doubt that i lost track of whats inside the machine though. We keep a clean record of what parts we change where and when. Plus this Machine has been exchanged for the same model just 1.5 years ago due to constant issues with prior machine.
I actually start to believe it might be the customer themselves. Will try to go there today and check their drivers + do printouts of all the stuff needed and clean the IDC Sensor like copyman suggested

[copyman]

Re: Just want to get your thoguhts on this for now: c284e

Thats nuts, i actually forgot about that sensor.
I might have a chance to go to the customer to quickly clean this later today as he is located in the same street.
Thanks, this could atleast be part of the issue.

All parts are oem

i actually forgot about that sensor.

There are actually 2 sensors, slide spring loaded metal back to reveal 2 sensors. Blow out both sensors with air while holding metal plate open.

[techsxge]

Re: Just want to get your thoguhts on this for now: c284e

i actually forgot about that sensor.

There are actually 2 sensors, slide spring loaded metal back to reveal 2 sensors. Blow out both sensors with air while holding metal plate open.

yeah i am aware that there are two sensors on it. Just did not thought of it when on sit. Hate it when this happens -_-

[copier tech]

Re: Just want to get your thoguhts on this for now: c284e

Hi,

i have a customer with c284e machine.
Got called in last week first because of a red line vertical to print direction, in about the last third of the page. I cant attach a real image because this would put my customers name out. so i'll attach a simple paint drawing.
It was an easy fix i thought and switched drum unit cyan and magenta, boom prints look fine, made a gradiation adjust just to be sure and customer was happy with the result.

So a day later, not even 24h gone by, i got called in to the customer again. Color mismatch on all their prints (Orange lighter than before). Gradiation Adjust gave out expected good colors so i got confused. Grabbed two new drum units from the workshop and replaced the yesterday switched drum units cyan and magenta. This is where everything went downhill with 500 kmh
Still have that color mismatch but now all their prints look fcked up with a red and blue background.
I noticed the bad image formation on blue with m test prints.
So i took out all drum units and developers, checked for any extensive toner dust and cleaned the machine as best as i knew. Because of the print quality i saw on blue i also tried to clean the laser. However, whatever i tried, nothing fixed the image issue.
Not even reverting back to the first units used fixed this.

[ATTACH]60013[/ATTACH]
[ATTACH]60014[/ATTACH][ATTACH=CONFIG]60015[/ATTACH]

Looking at your samples the cyan still looks poor, so the device won't be able to calibrate correctly.

Sometimes that tool doesn't clean the laser glass fully, shine a torch / flashlight & visually check the glass is spotless.

Because you swapped round used drums initially this would have thrown the previous calibration off.

[techsxge]

Re: Just want to get your thoguhts on this for now: c284e

Looking at your samples the cyan still looks poor.

What is the life of the yellow & black drums ?

Are they using genuine toner?

black drum has not been replaced for 1.5 years, has not reached its life for sure yet.
Yellow Drum and TB i have replaced aswell yesterday.
They use Toner sold by us directly from konica/olivetti.

[blazebusiness]

Re: Just want to get your thoguhts on this for now: c284e

Hi,

i have a customer with c284e machine.
Got called in last week first because of a red line vertical to print direction, in about the last third of the page. I cant attach a real image because this would put my customers name out. so i'll attach a simple paint drawing.
It was an easy fix i thought and switched drum unit cyan and magenta, boom prints look fine, made a gradiation adjust just to be sure and customer was happy with the result.

So a day later, not even 24h gone by, i got called in to the customer again. Color mismatch on all their prints (Orange lighter than before). Gradiation Adjust gave out expected good colors so i got confused. Grabbed two new drum units from the workshop and replaced the yesterday switched drum units cyan and magenta. This is where everything went downhill with 500 kmh
Still have that color mismatch but now all their prints look fcked up with a red and blue background.
I noticed the bad image formation on blue with m test prints.
So i took out all drum units and developers, checked for any extensive toner dust and cleaned the machine as best as i knew. Because of the print quality i saw on blue i also tried to clean the laser. However, whatever i tried, nothing fixed the image issue.
Not even reverting back to the first units used fixed this.

[ATTACH]60013[/ATTACH]
[ATTACH]60014[/ATTACH][ATTACH=CONFIG]60015[/ATTACH]

Remove all 4 drum units and the ITB.

With a flashlight inspect all 4 laser slit glass- the customer's laser cleaning tool inside the front door is certainly not great at cleaning the laser completely

Look to see if toner is on surfaces above the lasers where the drum units normally sit - toner there can continue to drop down and contaminate lasers.

You could also remove dv units and then completely blow out machine interior with a portable air compressor.

Inspect drum coronas by looking at the side of the drum to see if toner has accumulated in a small area on the charge and blow it out.

Replace the ITB unit- people think they can reset those as new forever, then weird problems show up like toner accumulating in an area in the middle or end of the drum units charge coronas that are extremely hard to isolate as an ITB unit issue and end up chasing their tail looking for other causes. You cannot trust the ITB or Fuser count on these machines as they can be easily reset by techs.

Please get back to us with what fixes it for you, hope this helps.

[wjurls]

Re: Just want to get your thoguhts on this for now: c284e

Remove all 4 drum units and the ITB.

With a flashlight inspect all 4 laser slit glass- the customer's laser cleaning tool inside the front door is certainly not great at cleaning the laser completely

Look to see if toner is on surfaces above the lasers where the drum units normally sit - toner there can continue to drop down and contaminate lasers.

You could also remove dv units and then completely blow out machine interior with a portable air compressor.

Inspect drum coronas by looking at the side of the drum to see if toner has accumulated in a small area on the charge and blow it out.

Replace the ITB unit- people think they can reset those as new forever, then weird problems show up like toner accumulating in an area in the middle or end of the drum units charge coronas that are extremely hard to isolate as an ITB unit issue and end up chasing their tail looking for other causes. You cannot trust the ITB or Fuser count on these machines as they can be easily reset by techs.

Please get back to us with what fixes it for you, hope this helps.

'

This here. The slit glasses will get very dirty over time. If bad enough, it's not too difficult to remove the LPH assembly from the machine to give it a proper cleaning.

[techsxge]

Re: Just want to get your thoguhts on this for now: c284e

Remove all 4 drum units and the ITB.

With a flashlight inspect all 4 laser slit glass- the customer's laser cleaning tool inside the front door is certainly not great at cleaning the laser completely

Look to see if toner is on surfaces above the lasers where the drum units normally sit - toner there can continue to drop down and contaminate lasers.

You could also remove dv units and then completely blow out machine interior with a portable air compressor.

Inspect drum coronas by looking at the side of the drum to see if toner has accumulated in a small area on the charge and blow it out.

Replace the ITB unit- people think they can reset those as new forever, then weird problems show up like toner accumulating in an area in the middle or end of the drum units charge coronas that are extremely hard to isolate as an ITB unit issue and end up chasing their tail looking for other causes. You cannot trust the ITB or Fuser count on these machines as they can be easily reset by techs.

Please get back to us with what fixes it for you, hope this helps.

Had already replaced all drum units at the time of your post and also transfer belt. I also cleaned the IDC Sensors.
I vacuumed the shit out of the machine yesterday the laser glass looks clean as it can be when looking at it from the side with a strong flashlight. Also i used 2 cans of compressed air, around 2L in total.

No luck still

Boss will probably offer the customer a replacement machine of the 8-Series now as this is a service contract customer and we would most likely put more money into this machine than what we can get a new one for.
Currently my boss thinks it might be due to the customers thicker paper. (Cardboard 3)

What realy drives me off is how everytime i exchanged a part, the print quality got significantly worse wihout a chance to revert back by putting the old parts back in the machine.
Machine is about 1.5 years old and has barely reached one drum life by the counters.

[Tech09]

Re: Just want to get your thoguhts on this for now: c284e

Another option, Image Process->Transfer Voltage Fine Adj->2nd Transfer Voltage adjust for their thick paper. Customers never want to hear it, but is the thick paper they're running within spec?