Bizhub c224 - scanner issue

[Hadi]

Hi! I have problem with scan from glass and adf. Print is ok. Copies are skewed and cut on one edge. Anyone of you had that problem?

https://i.ibb.co/KsVL0g1/IMG-20201012-135814.jpg (https://ibb.co/NNWmVq4)https://i.ibb.co/d46v0ny/IMG-20201012-135742.jpg (https://ibb.co/1GKNfHx)

[tsbservice]

Invalid Attachment specified.

[tsbservice]

Now we can see.
Scanner bed front left area is pushed down. You have to try "gently" tug it upward.

[Max]

Loosen the screws on both hinges and adjust the RHS adjuster screw until the copy is straight. Check the height (gap) is even all the way around the DF. Finally calibrate using a test chart.(every new copier will have a DF calibration chart) if you don't have it just stick to manual adjustment. There is also adjustment for pressure rollers in the DF cover that move white rollers up and down. Give them a go. Make sure all relay rollers are clean and exit mylar is not worn and without any ripped ends.

[tsbservice]

Loosen the screws on both hinges and adjust the RHS adjuster screw until the copy is straight. Check the height (gap) is even all the way around the DF. Finally calibrate using a test chart.(every new copier will have a DF calibration chart) if you don't have it just stick to manual adjustment. There is also adjustment for pressure rollers in the DF cover that move white rollers up and down. Give them a go. Make sure all relay rollers are clean and exit mylar is not worn and without any ripped ends.

Max that's is perfectly fine but OP said BOTH glass and DF. Why to bother adjustments DF while base is not even. First I would make sure copy from a glass is straight and then do DF adjustments if needed.

[Max]

Ah. Missed that. There is a technical bulletin about it then. Reg plate worn out and reg bushing sticking. Make sure you get 2 mylars for the plate too otherwise it a heat gun and some patience.

[Hadi]

Now we can see.
Scanner bed front left area is pushed down. You have to try "gently" tug it upward.I tried to tug it up and i think it's better but in SM I have to change in scan area some values and now copies are similar to original but not ideal. Without this changes copies have one edge cutted. I think this is not good solution and still it's something wrong. https://uploads.tapatalk-cdn.com/20201023/cbe0bdb1ce7d80d66c8f5eec0bd9a116.jpg

[nassor]

Yes just do copy gradation adjustment

[allan]

Do the automatic adjustments using the setup sheet provided with the DF.

[blackcat4866]

I know it's a bit confusing getting such a wide variety of advice.

I'm with tsbservice. The scanner frame gets bent from endusers leaning on it. As a starting point I usually use a tape measure. Remove the scanner outer covers, and measure the distance from the floor to the top of the scanner frame at both the front and the back. I've seen a difference of up to 10mm in those measurements. Clearly this won't work on carpeting or an uneven floor. Then loosen the screws that secure the scanner, and pull it back up to the point where the measurements are the same. Then tighten the screws.

One of our in shop techs used an automotive scissors jack to push the scanner up slightly past level, then screw it down tight. I'd imagine that would be hard to explain to a curious customer.

Back in the analog days the Ricoh monochrome machines were known for this. We called it "The Ricoh Bear Hug". I'd take a look around to make sure the enduser wasn't watching, then I'd lean over the scanner slipping my left arm under the scanner and gently lift the machine off the floor a few times.

Don't even think about the electronic adjustments until you've done this part. =^..^=

[BillyCarpenter]

I know it's a bit confusing getting such a wide variety of advice.

I'm with tsbservice. The scanner frame gets bent from endusers leaning on it. As a starting point I usually use a tape measure. Remove the scanner outer covers, and measure the distance from the floor to the top of the scanner frame at both the front and the back. I've seen a difference of up to 10mm in those measurements. Clearly this won't work on carpeting or an uneven floor. Then loosen the screws that secure the scanner, and pull it back up to the point where the measurements are the same. Then tighten the screws.

One of our in shop techs used an automotive scissors jack to push the scanner up slightly past level, then screw it down tight. I'd imagine that would be hard to explain to a curious customer.

Back in the analog days the Ricoh monochrome machines were known for this. We called it "The Ricoh Bear Hug". I'd take a look around to make sure the enduser wasn't watching, then I'd lean over the scanner slipping my left arm under the scanner and gently lift the machine off the floor a few times.

Don't even think about the electronic adjustments until you've done this part. =^..^=

That's genius but why not find a better reference point than the floor? Why not measure from some point on the machine that is always constant?

[blackcat4866]

What do you suggest? =^..^=

[BillyCarpenter]

What do you suggest? =^..^=


I don't know. I'm not looking at the machine. I was just thinking it may be better if you could find a reference point on the machine that would eliminate things like carpet or an unlevel floor.

With that said, I give you a lot of credit. Most folks wouldn't even think to do what you did.

[tsbservice]

What do you suggest? =^..^=

May have a database with measurements from different models in good working conditions. For example measure distance front and rear side(fixed points on scanner bottom) to some reference points below that are same in all C224e ie. So when have to deal with this problem you know your references and compare with existing distances. Anyway as usual BC methods are unexceptionable :)

[Synthohol]

you can use a level?

[tsbservice]

For sure when floor is perfectly horizontal otherwise you haven't good starting point to level. Tell us you level the copier glass on every new install place of office machine.

[blackcat4866]

For sure when floor is perfectly horizontal otherwise you haven't good starting point to level. Tell us you level the copier glass on every new install place of office machine.

There aren't many level floors out there, and there are very few MFPs with the leveling feet screwed down. Measuring to the floor seems to work for me. =^..^=

[Synthohol]

i would check/adjust the level of the main body first so the level of the scanner has a reference.
besides, i just wedge a knee up under the scanner and push up while making a copy to see if in fact the scan bed is bent down.
when i did production machines i could use the level every day, MFPs not so much unless an issue warrants it :)