bizhub C224e and C258 with crooked scans and copies

[druckerteam]

Dear Technicians.

We have 2-3 bizhubs C224e and C258 an which the scans are crooked. And also die copies.
The prints are perfect and also the scans and copies from the dual scanner in the adf if we are scanning with the dual scanner.

I thnik the problem must be the main scanner unit.
Is it possible so calibrate the scanner to have straight scans, which are not crooked??

I hope somebody can help me.


Regards, Paul

[rrrohan]

u need to confirm if doc feeder is skew or if it also does it off the main glass.

if its skews from glass u need to fix that prior to worrying about the DF

[druckerteam]

Thanks.
The problem is also on the flatbed glas. Is it possible to calibrate the scanner in the service mode or how can I fix the skew scanner?
The problem ist not the doc feeder, I think the problem ist the scanner.

[rrrohan]

if u remove the right cover then remove the glass

then remove left cover and the front cover surrounding the scanner bed and remove a transparent film covering a screw hole u can manually pull the scanner so u can poke screw driver through hole to loosen the screw that hold the plate that clamps the scanner to the drive wire.

u will need trial and error micro adjustments of like 1mm until it looks good.

it can be time consuming and no doubt u will make it worse before it improves lol

[blazebusiness]

Dear Technicians.

We have 2-3 bizhubs C224e and C258 an which the scans are crooked. And also die copies.
The prints are perfect and also the scans and copies from the dual scanner in the adf if we are scanning with the dual scanner.

I thnik the problem must be the main scanner unit.
Is it possible so calibrate the scanner to have straight scans, which are not crooked??

I hope somebody can help me.


Regards, Paul

If you have 2-3 copiers doing the same thing it is more likely you need to adjust the document feeder skew , not the scanner. I can't imagine 2 -3 copiers with the same scanner assembly issue (unless you have a tech that has been messing with the screws on the scanner when cleaning optics).

Very common on this model to have the adf skew adjust be off. There is a screw in the back right corner near the hinge for adjusting the way the adf is sitting on the copier. So, loosen the mount plate screw on the right hinge and then go to the rear of the adf and find the adjustment screw. Adjust that until the feeder is sitting straight on the copier , then retighten the hinge mount screw to lock in the adjustment.

And...it can be a little tricky. There is a lot of play in these feeders. When you lift the feeder to lock in the skew adjustment by tightening the mount screw,you must hold it steady or the adf can move and throw off the adjustment you just made.

[progoffice]

If you have 2-3 copiers doing the same thing it is more likely you need to adjust the document feeder skew , not the scanner. I can't imagine 2 -3 copiers with the same scanner assembly issue (unless you have a tech that has been messing with the screws on the scanner when cleaning optics).

Very common on this model to have the adf skew adjust be off. There is a screw in the back right corner near the hinge for adjusting the way the adf is sitting on the copier. So, loosen the mount plate screw on the right hinge and then go to the rear of the adf and find the adjustment screw. Adjust that until the feeder is sitting straight on the copier , then retighten the hinge mount screw to lock in the adjustment.

I agree. I see this all the time. When these copiers get moved it easy to use the doc feed as a handle to push/pull on. The screws loosen when the machines get bounced around too and make it even easier for skew to happen. You can't necessarily go off the center mark of the adjustment guide of the lower right df hinge either. You have to keep adjusting one way or the other until the doc feed and the machine are pretty much parallel with each other. I usually do this until there is no shadow on the bottom right or left corner of the scanned document. No shadow, no skew. Make sure you also have a nice original to work with like a counter page. The sample the customer gives you isn't always the best original.

[druckerteam]

If you have 2-3 copiers doing the same thing it is more likely you need to adjust the document feeder skew , not the scanner. I can't imagine 2 -3 copiers with the same scanner assembly issue (unless you have a tech that has been messing with the screws on the scanner when cleaning optics).

Very common on this model to have the adf skew adjust be off. There is a screw in the back right corner near the hinge for adjusting the way the adf is sitting on the copier. So, loosen the mount plate screw on the right hinge and then go to the rear of the adf and find the adjustment screw. Adjust that until the feeder is sitting straight on the copier , then retighten the hinge mount screw to lock in the adjustment.

And...it can be a little tricky. There is a lot of play in these feeders. When you lift the feeder to lock in the skew adjustment by tightening the mount screw,you must hold it steady or the adf can move and throw off the adjustment you just made.

We collect this machines from some years ago till now and have for now no solution. We didn't have the problem in between some weeks. Therefore we have 2-3 copiers.
So I will try to calibrate the scanner unit. Because on this machines the copy looks the same if I copy it from the glass or I copy it with ADF.

Thanks for the help!

[Bix]

Hi, in series 8 some problems I have solved them through the automatic calibration of the ADF. However, you must have the calibration sheet which is usually found inside the box during the first installation. Without this, it takes forever to find the most suitable values and is easier to fix with the screwdriver.

[blazebusiness]

We collect this machines from some years ago till now and have for now no solution. We didn't have the problem in between some weeks. Therefore we have 2-3 copiers.
So I will try to calibrate the scanner unit. Because on this machines the copy looks the same if I copy it from the glass or I copy it with ADF.

Thanks for the help!

No problem. Glad to help. Usually skew is related to the adf and very easy to remedy. But, that being said---We also have had more difficult issues with machines that skew from both the glass and the feeder (but happily not too often). And adjusting the scanner was the fix for us on a couple of those machines. Tedious work as you must adjust in small increments then reassemble and test and then disassemble and adjust again quite a few times to get the scanner position just right. Good luck and don't forget to post what fixed it.

[greglogston]

I'd check for scanner sag. I had one where I had to adjust the height of the scanner and add bigger screws.