Mp3350 scan density calibrate?

[mrfuser]

Client prints fine , only when scan do they get light on lead edge of page. Is there a calibration for scan density on the 3350?

thanks

kelly

[slimslob]

Re: Mp3350 scan density calibrate?

Turn power off and then clean all the mirrors in the optics section. Dust on the optics can cause the white reference to look darker than it is and cause a shift in the entire gray scale.

When you say lead edge of the paper, are you meaning the edge that was leading going into the ADF? If it is, check the white pressing plate above the slit glass. If it is not positioned correctly, the lead edge of the original might not be against the slit glass.

[mrfuser]

Re: Mp3350 scan density calibrate?

Went there and found that it is non op side edge of page that is light on letter size when using adf and op side when lay on glass.

strange thing is if we scan to email the document is fine. Only when scan to print!

All clean and looks fine. Any ideas?


kelly

[slimslob]

Re: Mp3350 scan density calibrate?

If it was doing it on printing as well I would say it could be a dirty shield glass on the laser unit. If they are printing to SEF paper it still could be the shield glass.

[JustManuals]

Re: Mp3350 scan density calibrate?

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[BLADE]

Re: Mp3350 scan density calibrate?

an age old fix for something like that was to lift up the front left corner of the scanner unit as hard as you can

[slimslob]

Re: Mp3350 scan density calibrate?

an age old fix for something like that was to lift up the front left corner of the scanner unit as hard as you can

I was told that fix for correcting skew.

[BLADE]

Re: Mp3350 scan density calibrate?

cool

[copyaction]

Re: Mp3350 scan density calibrate?

an age old fix for something like that was to lift up the front left corner of the scanner unit as hard as you can

yes give that a try, just had the same last week.

[mrfuser]

Re: Mp3350 scan density calibrate?

Give what a try? Bending the adf is NOT the fix for this. Read what I wrote carefully.

[copyaction]

Re: Mp3350 scan density calibrate?

No one said bend the adf
you need to lift up on the front left of the scanner
people tend to lean on it while making copies so it needs to be lifted back into position

[mrfuser]

Re: Mp3350 scan density calibrate?

Why would that make a difference if I lay it on the glass? Strange thing is scan to email the image is fine, ONLY when it scans to make a copy is it screwy!

No one said bend the adf
you need to lift up on the front left of the scanner
people tend to lean on it while making copies so it needs to be lifted back into position

[slimslob]

Re: Mp3350 scan density calibrate?

Try this. Load the paper short edge feed (SEF). Make a copy. If the copy is fine, clean the shield glass. It is located below the toner tray. You might have to remove a small cover. Recommend cleaning any spewed toner between the PCU and the toner tray first, otherwise you could get toner in the laser unit.

[Iowatech]

Re: Mp3350 scan density calibrate?

Why would that make a difference if I lay it on the glass? Strange thing is scan to email the image is fine, ONLY when it scans to make a copy is it screwy!

I don't know if that is the problem, but here's why it would make a difference even when laying your original on the glass:
If the frame of the scanner gets slightly warped in this fashion, it changes the geometry between the scanning lamp, scanning mirrors and CCD. That will cause scanning defects on both originals scanned from the document feeder and from the platen glass, although I think the defects will be on the opposite sides.
Personally though, I think your laser unit is done. If you can, try swapping the laser unit in that machine with one that works and let us know what happens.

[copyaction]

Re: Mp3350 scan density calibrate?

Try this. Load the paper short edge feed (SEF). Make a copy. If the copy is fine, clean the shield glass. It is located below the toner tray. You might have to remove a small cover. Recommend cleaning any spewed toner between the PCU and the toner tray first, otherwise you could get toner in the laser unit.

good idea, I think everyone assumed he already cleaned the optics, but given the way he is fighting the issue that has existed since the 1027 series, who knows????