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New Contributor
Posts: 1
Registered: ‎10-17-2019

Printer Wont Power UP


I own a canon imageclass mf642cdw and I recently changed out the black toner. I powered down the printer and now it will not power back up. Is there something I can do to get it back on? I havent owned this print for too long so its baffling why it wont power on 




Esteemed Contributor
Posts: 3,537
Registered: ‎11-19-2017

Re: Printer Wont Power UP


Sorry, but please confirm the power recepticle is working and supplying power to another device. 


It is possible something didn't get installed properly, remove and reseat the black toner.


Ensure all doors and covers are closed securely.

Bay Area - CA
~6D2(v1.1.0) ~Many Lenses ~DxO PhotoLab Elite ~Windows10 Pro ~EVGA RTX 2080 FTW3 Ultra ~Pixma Pro-100 ~ImageClass MF644Cdw ~LBP622dw
Reputable Contributor
Posts: 749
Registered: ‎09-30-2013

Re: Printer Wont Power UP

Hi GD77.


If you have confirmed that the power cord was able to power another device, and was firmly connected to back of the printer, one other recommendation I can make is to try turning on the printer while the black toner cartridge is removed.


Please verify that the toner cover door is closed when you turn on the printer. If the printer still does not turn on, or reseating the black toner cartridge shuts the machine down again, then we will have to recommend that you call us.


Please call 1-800-OK-CANON (652-2666), Monday - Friday 10:00 a.m. to 6:30 p.m. ET (excluding holidays).

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