canon image runner c4080 partail black copies, no color

[stevel]

have canon ir c4080 producing 3/4 solid black page with 1/4 of page almost white. the ts belt is coated with black toner on front 3/4 area and rear 1/4 is clean. today i cleaned the ts belt assy of all toner and inspected for problems, no problem found. i installed a new clean unit for transfer belt and a new drum (black) and the copier warmed up and went into a gradation adjustment then gave me a service code of E000020-0434. re-installed old black drum and the copier camr to ready but now produces a 1' line on front of ts belt. re-install new black drum unit and i get the same code. help!!!! p/s if i try to make a single color in c,y or m I get the same black copy.

[odleb4]

Re: canon image runner c4080 partail black copies, no color

Can you see any color in your single color of c,m,y copies? And is there piles of black toner on the edges of the itb ass'y? That error usally results in blank copies for black.

[vigour]

Re: canon image runner c4080 partail black copies, no color

your new drum is defective.
I have seen that code in winter, when we take a drum sitting in the car for days in below freezing temperatures , and stick it in a copier.

Run test prints instead of copies. e.g PG10 and turn each colour on or off to check.

[stevel]

Re: canon image runner c4080 partail black copies, no color

Can you see any color in your single color of c,m,y copies? And is there piles of black toner on the edges of the itb ass'y? That error usally results in blank copies for black.

there was a coating of toner on the transfer belt on the front covers about 3/4 of page and rear of ts belt was clean. i cleaned the entire ts belt and cleaned the sides and bottom plate. with the old drum (k) in the copier it will come to ready and make copies. tried full color, single k,y,m,c and they all produce the same black copy, no color.

[stevel]

Re: canon image runner c4080 partail black copies, no color

your new drum is defective.
I have seen that code in winter, when we take a drum sitting in the car for days in below freezing temperatures , and stick it in a copier.

Run test prints instead of copies. e.g PG10 and turn each colour on or off to check.

the customer prints are the same as my copies, color or black. the drum giving the code is new and 30 minutes before came out of an inventory room the is controlled to proper temp. going back today to investigate if the drum (k) is turning because the old black drum works, just no copy (it's black and white with no print and i can not make any color copies/prints because they look like the black.

[vigour]

Re: canon image runner c4080 partail black copies, no color

can you do autograd?

maybe someone trying to save money, locked the copier into black only in service mode (can't find that option for 5180, but I can do it on Advance copiers)
What is the percentage on colour drums.
Maybe they are about dead and outputting only a tiny bit of toner

i would do a mmi clear - addressbook settings and user will be erased.
dc con clear after pprint, then re-enter changed values from pprint

remove cover above bypass and watch if colours are produced for the patches

[vigour]

Re: canon image runner c4080 partail black copies, no color

manual says, E020-xx34:
the fault can occur when a new drum is fitted. It is detected during ATR control or in about 150 secs after idle rotation of the dev assy

CAUSE:
The samlpe image fails to be drawn in ATR control
There is a fault/ open circuitin the salt sensor
The drum unit is faulty.
The ITB has deteroirated.

[odleb4]

Re: canon image runner c4080 partail black copies, no color

Check and see if your itb assembly is lifting. The lift cams or plates may be cracked or broken..

[butitsmyfirstday]

Re: canon image runner c4080 partail black copies, no color

Also take a look at your SALT sensor and clean the sensor window, look for a broken/disconnected wire...

[teckat]

Re: canon image runner c4080 partail black copies, no color

Full Coating of ITB with toner is usually a Laser issue on this model
SWAP the Black Laser with another color

u can also swap the Black HVT2with another //all the same #

[stevel]

Re: canon image runner c4080 partail black copies, no color

can you do autograd?

maybe someone trying to save money, locked the copier into black only in service mode (can't find that option for 5180, but I can do it on Advance copiers)
What is the percentage on colour drums.
Maybe they are about dead and outputting only a tiny bit of toner

i would do a mmi clear - addressbook settings and user will be erased.
dc con clear after pprint, then re-enter changed values from pprint

remove cover above bypass and watch if colours are produced for the patches

found problem. the customer has default to black copies. the front cam that raises the front corner of ts belt broke and spring fell off, the reaction is it trashed the black unit. stuck the new drum into another copier and worked fine. replaced cam and the copy came back. single color good except image was about 1/2 inch down page and color was off and out of focus. it would not do gradation adjust. stuck my konica chart and seen a reduction lead to trail edge reducing as the copy ran from lead to trail of about 1/4 to 1/2 inch on the 4 colors. this caused the gradation not to run and image out of focus. super cleaned the transfer belt and drive rollers now the gradation would run and copies are perfect once again. thanks

[vigour]

Re: canon image runner c4080 partail black copies, no color

Thanks for the detailed reply.

Not like the yahoos who say " machine working now" and we never hear from them again.

[Tricky]

Re: canon image runner c4080 partail black copies, no color

Thanks for the update.

[Canuck]

Re: canon image runner c4080 partail black copies, no color

your new drum is defective.
I have seen that code in winter, when we take a drum sitting in the car for days in below freezing temperatures , and stick it in a copier.

Run test prints instead of copies. e.g PG10 and turn each colour on or off to check.

i see this with 3200 and 3380 new drums...remove it and bang the hell out of the sides of it then re-install it. Best to do before removing all sheets and protection. Beat on it,shake it to level the toner inside,remove protective sheets,etc,then install