Question about Sharp AL 1631 Copier

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SF-2022 THE CH CODE STAYS ON EVEN THOUGH ALL DOORS ARE CLOSED

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Your toner cartridge needs to be replaced, It is empty.

Posted on Mar 31, 2008

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Hi olixrules

CH light blinking - The DV tank is not installed.

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Source here.

Hope this gives you some idea, unfortunately I'm not sure how to resolve these error on this particular copier.

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I believe that that "CH" code means that one of the doors is not fully closed. Not sure because I haven't worked on a Sharp in a couple of years. It's easy enough to check though. Let me know if that helped.

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