Canon C1 banding problem

[Penvy]

This ones a new one for me
This C1 was working perfect
It was shut off in sleep mode for the week end
came back and we have this banding mess across the page in color
the B&W setting only is fine,

OR with no copy there is no band at all


I took a pic of this
The band is about 3" wide where the color should be across the page
the color of the band shows the theres color but not the image.
it moves up and down the page like it would be a drum problem.
HOW? it just got shut off in deep sleep mode.

NO errors on startup and cleaning wont help

there was an error a while back E000061-00015
"Laser adj not finished"?
shut the mach down a few times and worked perfect.

error did not come back.

I dont think its the drum, the B&W would also be bad!
but where the color should be on the drum that band goes across and the
image in the band is rough

Good grief again with this C1
thanks guys

How do I attach a Pic of this!
P

[teckat]

if u run single color prints is the banding rough ???? /if so drum may be defective
If Potential Control is turned off, is the banding still there ??

[Penvy]

Banding is rough,
this was working perfect.
no signs of problems

the c1 was just shut down from sleep mode for the weekend
the B&W print is fine.
this is crazy
a drum just does not go bad like that
but it acts like it.

nothing was done , or changed.
the color copies were perfect last week.
just that error
e000061-000015

but a restart after a few times it went away.
and the copies were fine
usually there is image problem that will start to show up.
the band is very rough abd acts like the drum has been exposed
on that area.


I dont know how to post the pic to show what it looks like.
p

[irtek]

Sounds more like a laser problem than a drum problem.

[SCREWTAPE]

I would check the primary corona.
The drum life is about 150k give and take.
When was the last time it was replaced.

[Penvy]

This drum has only 60K
This drum was perfect last Fri.
B&W image copy is perfect
Primary corona grid is new
wire is good

This drum showed no signs of image problems.(usually you will see a image problem start to show up)
ON visual inspection the drum has no defects at all on the surface
We did get an error E000061-00015 (At time of potential control, a specific level of potential is missing. Or the limiter goes on.)
(laser power adjustment no completed no convergence within effective range)
WE restarted and it copied just fine no errors.

I really dont think a drum would just go bad sitting with the power off over a weekend.
I does look like a drum image problem on the color band as if the drum was exposed on that spot
BUT the B&W would ALSO have the same image problem


BTW I have a photo of this with the B&W and color and tried to attach it in the post
several times, I resized the pic to a thumbnail and its a small file and still no luck.
How do I get that to work

[teckat]

Did u run single color PG5 to isolate the color issue/ it could be a bias clip problem/ or a contaminated Dev unit FOR THAT COLOR !!!!!!

u need to run single color= IN service mode !!!!!!!!!!! U have to investigate all color units

also check High Voltage Development Bias Cable/
the rough image u spoke about is starter / so that is a bias problem or potential sensor/DC controller issue

60k on a drum means nothing !!! if u are just printing text/ if customer is printing full color with large areas of color saturation it wears on surface.

[Penvy]

Did the single color its not one color PG5.
But the B&W print off the top scanner/copy is just finr.

I am thinking the DEV units may be over filled?
going to pull the image unit out to ck that.

The point here is the color WAS running perfect and when you run full color it has this BAND 2" wide across the whole page
IN B&W no band and perfect copy

only when the color DEV the drum has this rough 2" band Yellow Cyan and Magenta across the whole page

We did a firmware update a while back and this ran perfect

It was just over the weekend it was shut off and this showed up.

the ATR is now getting errors and looking into the DEV units

[Penvy]

How can I post the pic's

I see the attachment and drag it to the box with the thumbnail pic in color
its a jpeg 44kb\
tried the image too

[mrfixit51]

I have not been able to figure out this attachment thing since the site was updated either.. I liked the way things looked and worked before the changes...

[Penvy]

Well any how
it look as if the friggin toner supply is the problem
Put in all new toner carts
ran fine
shut it down
turned it on and the toner supply seems very low.

Whats the DENS ratio in display service mode?
The normal % numbers to look for.
I had an old printout if the settings
and they were in the 19% C, M, Y

SOOOOOOOO
I did a Install/supply the get toner into the DEV's.and then a Stir
then a auto gradation
and the % went up
they were close to 4% C M Y each

the Magents is really a problem
looks as if the OEM toner NEW has clogged up the DEV unit.

Its acting like theres no DEV in the unit

BUT we JUST did a REFRESH/Restart of each color
and it worked great.

The toner supply seems as if its NOT cycling to the colors.
Hmmmm

So Its NOT the Drum
Seems as if the toner supplys have starved out the DEV units
GO Figure