canon irc3220

[copy_suhail]

there is a problem in my IRC3220 in copy and print its a color mismatch
I cleaned the ITB and made a maintenance to the copier and no change

pleas help
thanks to all...

[charm5496]

ITB driver gears, new cleaning blade, clean the drive rollers on the inside of the ITB to make sure it is grabbing properly. Run a quick auto gradation when you are done. This should bring the alignment back in.
If none of that works you can do a DC con clear or reset your laser assemblies by hand.

[teckat]

there is a problem in my IRC3220 in copy and print its a color mismatch
I cleaned the ITB and made a maintenance to the copier and no change

pleas help
thanks to all...

if u mean a mismatch in colors/ how about doing a auto calibration/ and or a KODAK gray scale calib.

read your manual !!!!

[SCREWTAPE]

there is a problem in my IRC3220 in copy and print its a color mismatch
I cleaned the ITB and made a maintenance to the copier and no change

pleas help
thanks to all...

Post an attachment file if you can.

Are colors off?
or
Are the colors not aligned properly?

[copy_suhail]

if u mean a mismatch in colors/ how about doing a auto calibration/ and or a KODAK gray scale calib.

read your manual !!!!

dear sir

I did that but no changes

[copy_suhail]

the colors not aligned properly

Post an attachment file if you can.

Are colors off?
or
Are the colors not aligned properly?

[teckat]

the colors not aligned properly

Prior to any other work you should make sure the machine is clean of paper and toner dust and that the pattern reader/salt sensor assembly is clean. Also make sure the service cover with the pattern reader/salt sensor cover actuator is installed inside the front door of the copier and that the actuator is not broken.

* The transfer belt may be slipping on its drive rollers. Try removing the transfer belt cleaning blade and running a couple of copies, if the problem goes away the transfer belt is definitely slipping. Remove the ITB assembly and the transfer belt and clean all drive rollers with alcohol, also be sure to clean inside the transfer belt. (It is still possible the transfer belt may be slipping even if the problem does not go away after removing the cleaning blade so removing and cleaning the transfer belt drive rollers is still recommended).
* The pattern correction data stored in the DC Controller may be corrupt. Try clearing dc-con ram. You can run a test copy to see if the dc-con clear resolved the problem prior to inputting back up data. (Be sure you have run a PPrint: Copier/Function/MiscP/PPrint prior to performing any ram clears so back up data can be reentered).
NOTE 2: If the color registration problem only occurs on HEAVY PAPER try setting service mode level 2, Copier/Option/Body/CLR-SHFT to 1. Keep in mind this will reduce heavy paper productivity by approximately 1/3.


The following five details for correcting color mis-registration are listed in order of
importance. Please see SERVICING PROCEDURES.
I. Gear Replacement due to color mis-registration in the sub-scanning (paper feed) direction
1.The 42T gear of the ITB Assembly and the two 42T gears of the ITB Drive Assembly were
changed from molded plastic to machined plastic. The gear in the ITB Assembly will be given a new
part number and available as a service part. The gears in the ITB Drive Assy. will now be as follows:
The dowel pin gear is available as a service part and the other gear is now pressed on the Swing Gear
Assembly and unavailable as a service part. The entire Swing Gear Assembly must now be ordered.


II.Transfer Belt/Drive Roller Cleaning due to color mis-registration in the sub-scanning (paper
feed) direction
1.In a high usage environment, excess toner will accumulate around the inside of the Transfer Belt
area especially soiling the Transfer Guides and the Drive Rollers. This will result in color misregistration
by as much as 3mm. Prior to purchasing a new Transfer Belt, it is highly recommended
that the special cleaning procedure described below be implemented.


III.Adding Side Shims due to color mis-registration in the main scanning (front to rear)
direction
1.Through normal wear, the front to back tightness of the Drive Rollers can wear causing color misregistration
in the scanning direction. Shims can be added to reduce “freeplay”.


IV.Laser Adjustment due color mis-registration in the main scanning (front to rear) direction
1.There is the possibility under certain conditions that the laser cam/s can be in the wrong position
thereby causing a color mis-registration in the main scanning direction. There can be several factors,
which can lead to this. They are:
a. Performing a DCON ram clear.
b. Swapping laser units to test from either another machine or another color from the same
machine.
c. Replacing a defective laser unit with a new unit.

V.Connector Reseating due to color mis-registration in the main scanning (front to rear)
direction due to loose wiring on the DC Controller/System Controller and the two
interconnection ribbon cables between the DC Controller and the System Controller
1.There is the possibility that during rough shipment or during relocation of an existing machine,
wiring on the DC Controller and/or the System Controller or the two interconnection ribbon cables
between the DC Controller and the System Controller can become loosened. When this happens, the
laser motors do not receive the correct alignment signal from the DC Controller. Hence, the laser
lenses are out of alignment causing color mis-registration in the main scanning (front to rear)
direction. There is a simple procedure to rule out loose cabling.
ITB..JPG
ITB A..JPG
GEARS..JPG
Color Mis-Registration in the sub-scanning (paper feed) direction due to Gear Wear:
1.If color displacement is noticed, check the gear on the ITB Assembly, the gear mounted with a dowel pin on
the Swing Gear Assembly and the pressed on gear also mounted on the Swing Gear Assembly for excessive
wear and or damaged teeth and replace all three at the same time.


Color Mis-Registration in the main scanning (front to rear) direction due to Laser Cam Out-of-
Alignment Condition:
To determine if the laser cam/s are at fault, go into Service Mode and perform a PG Type 6 and then a PG
Type 10. Check to determine if the laser cams are possibly at fault. Once it has been
determined that a laser cam/s are at fault perform the following steps:
1.Remove the 4 laser units from the machine.
2.Remove the laser cover to expose the lens. S
3.Adjust the cammed gear until it is at its center position.
4.Reassemble the laser unit and reinstall in the machine.
5.Turn on the power and once again try PG Type 6 and PG Type 10.
PG10..JPG
CAM..JPG
LASER..JPG

GET THE PICTURE/ many things effect registration





good luck

[SCREWTAPE]

You can try DCCON clear but chances are you will have to manually adjust the laser back to home position.
Teckat gave you good illustrations on how to resolve registration issues.

Good luck.

[copy_suhail]

I will try that ..


Thanks alot Mr. Teckat and Mr.SCREWTAPE

[Canuck]

Is color misregistration in scan or sub-scan direction? If in scan direction(front to rear) the fixing-feeder drawer open/close photo interrupt sensor is known to generate electrical noise back to the d con....new ones are better. If it is in sub scan direction,make sure the pattern reader is properly positioned. Alot of techs knock it out of place when removing the itb assembly. If all itb drives,etc are good,make sure the external secondary transfer roll rotates freely...i have seen them cause sub scan misregistration problems