IR1023n scanning quality (blurry)

[Jeff M.]

Have a 1023n, prints fine. When copying from glass, copies fine. When using ADF to copy or scan, the left half of page is fine, the right half is blurry and has a slight background. Cleaned scanner, ran shading adjustment, paper set adjustment, no difference. Any ideas would be greatly appreciated. Thanks.... Jeff M.

[mrfixit51]

If I understand correctly,, a copy off the glass is fine, but docfeeder copies have this problem?
Only thing comes to mind is feeder height, and does the CIS have anything that would keep it from staying the same distance from the under side of slit glass in the doc feed position as opposed to the right side platen glass?

CIS is "Contact Image Sensor", the "optics" of this copier for the uninitiated in the peanut gallery...

[charm5496]

Have a 1023n, prints fine. When copying from glass, copies fine. When using ADF to copy or scan, the left half of page is fine, the right half is blurry and has a slight background. Cleaned scanner, ran shading adjustment, paper set adjustment, no difference. Any ideas would be greatly appreciated. Thanks.... Jeff M.

You are missing the spacer on the CIS on that right side. They pop off a little too easy IMO but that is causing the unit to sit too close to the glass when you are running the originals through the DADF.

[teckat]

Here is a Pic of what charm5496 mentioned on spacers
The spacers #36 are circled in red in the picture below.
2-SPACER, CIS - FC6-7591-000


1023spacers.jpg

[zoraldinho]

Have a 1023n, prints fine. When copying from glass, copies fine. When using ADF to copy or scan, the left half of page is fine, the right half is blurry and has a slight background. Cleaned scanner, ran shading adjustment, paper set adjustment, no difference. Any ideas would be greatly appreciated. Thanks.... Jeff M.

This service bulletin can help.100% your problem

ir1022-006.pdf

[Jeff M.]

Thanks for your replies, guys. The spacers on the CIS are there, both front and rear. I thought about uneven distance on the CIS, but wouldn't that also affect the copy on the glass as well? DF seems to make the most sense. I'm going back today to look at the ADF hinges. Will let you know what happens. Jeff M.

[charm5496]

not really because when you copy from the glass it sits in a rail where when you use the DADF in stream reading mode it goes all the way up against the slit glass.

[mrfixit51]

I am fairly certain that the spacers are pressed against the large glass as well. When you pull the doc glass, the CIS is wobbly, so it is not on any rail that I am aware of.

I made repair parts in my shop to fix this issue on one of my customer's machine. It had busted the lip off of the top cover where the hinge anchors itself, so it would hold the cover higher in that area.


IMAGE_072.jpg

IMAGE_071.jpg

[Jeff M.]

OK, here's what the problem was. The white plastic that attaches the hinge to the ADF if curved (deformed). Only on the left hinge, which holds the ADF up off of the machine. Replaced the hinge, and works fine. I know the ADF breaks, as in mrfixit51's case, but I got lucky here. Thanks to all again. Regards.... Jeff M.

[mrfixit51]

Happy ending!

That is good news Jeff,, love it when a story has a happy ending!

[richmari]

Replace the adf hinges.There is also a mod on this model.New style adf base and hinges.

[zoraldinho]

I am fairly certain that the spacers are pressed against the large glass as well. When you pull the doc glass, the CIS is wobbly, so it is not on any rail that I am aware of.

I made repair parts in my shop to fix this issue on one of my customer's machine. It had busted the lip off of the top cover where the hinge anchors itself, so it would hold the cover higher in that area.




[ATTACH=CONFIG]7800[/ATTACH]

[ATTACH=CONFIG]7799[/ATTACH]

Nice job David.Better then Canon.

[mrfixit51]

Nice job David.Better then Canon.

Thanks,, not as aesthetically pleasing as a new improved base, (not available at the time of my repair), but I know it is stronger than either the old or the new surface to anchor it in the base.

[zoraldinho]

Replace the adf hinges.There is also a mod on this model.New style adf base and hinges.

http://www.copytechnet.com/forums/attachments/canon/7794d1294297553-ir1023n-scanning-quality-blurry-ir1022-006.pdf

[Canuck]

Replaced quite a few base frames for this....simply to replace.