Question about Canon PC-940 Black and White Copier

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Canon PC940 Problem

My Canon PC940 copier prints all black copies. It is lightly used and about 3 years old. I changed the toner cartridge and the problem persists. Cannon support suggests that condensation would cause this and I should leave the machine open for 2-3 hours. We did so and the problem remains the same. Has anyone experienced this and found a solution? Any suggestions or help would be sincerely appreciated.

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  • Anonymous Apr 16, 2009

    eo lights up copier automatically shuts off when turned on

  • GLPF Apr 16, 2009

    Prints all black or almost all black copies, no matter the contrast adjustment. Also makes a crackling sound as it runs the paper through.

    Replaced toner cartridge and still has problem. Old cartridge has toner sifting out 1 end when I move it. New toner cartridge so far does not have toner sifting out and is making copies w/ large black lines/patches, it is still making the crackling sound.

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You could have a broken exposure lamp. Does the scan bar light up when you make a copy? If not that is the problem. You might also ck the contacts on the machine where they touch the toner cartridge. The toner cartridge opens a shutter to the drum when you slid it into the machine and that may be broken.

Posted on Feb 13, 2008

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