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Canon MF8580Cdw Error: "Paper Size & Settings Mismatch Drawer 1"

Canon MF8580Cdw
Error: "Paper Size & Settings Mismatch Drawer 1"

This error happens very randomly.

I believe it would either be the paper Cassette (P/N FM4-4279-000) or SR14 (P/N WG8-5696-000).

I was hoping someone has seen this error before and can point me in the right direction.

Thanks!
Printers and Scanners* canonHardware

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AviationAce

8/22/2022 - Mon
hdhondt

Make sure that any sliders in the tray are pushed against the paper, as they tell the printer what size paper is loaded.

Also check the paper size selected by the applications. Some applications, like Word, ignore driver settings and instead want you to select the paper size, type and tray in Page Setup. New documents use the paper settings of the currently selected printer, unless changed in Page Setup. Word also stores paper settings with the document, so documents created for another printer may cause unexpected problems.
Paul Sauvé

a common error would be a document defined as A4 paper size instead if Letter paper size
AviationAce

ASKER
@Paul
This error occurs very randomly during a print or copy job, so I don't believe it could be software (printer driver setup) issue.

@hdhondt
I did make sure that both sliders were in the correct position.

I was looking to see how the paper tray interfaces with the printer.  It looks like the size is detected at SR14.  I believe it possible that the paper tray itself could be the culprit.
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hdhondt

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AviationAce

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This is the only printer of its kind at this site.  I will order a new tray and see if that fixes it.
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hdhondt

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AviationAce

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@hdhondt
I have looked through the tech manual and I see that the tray interfaces with the printer at SR13 and SR14.

It appears to me that SR13 just detects weather paper is in the tray or not.
It appears to me that SR14 just detects weather the tray is in or not.

I don't see how the printer detects what size paper the tray is set to.  I wonder how the printer detects that.
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AviationAce

ASKER
Probably a new tray will fix it.
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AviationAce

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UPDATE!
 - As it turns out it was the paper being used that was causing the error.
 - The printer determines the size of paper being used by timing how long it takes for a sheet to exit the top of the printer.
 - The paper being used would CURL a lot from the heat of the fuser.
 - When the paper exited the top, the curl would keep the flag open that detects the paper size!
hdhondt

Thanks for the update, Aviationace. Printers normally time paper movement, as that helps to detect jams. So in this case I'd expect a paper jam instead of a paper mismatch error.
AviationAce

ASKER
@hdhondt
Agreed.  You'd think this would have thrown a paper jam error.  But it didn't.  That's what made diagnosis so vexing.
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