Troubleshooting, Check the following first, Is the power switched on – Canon imageCLASS D550 User Manual

Page 95: Has the power switch been just turned on, Is the machine in sleep mode, Are the settings proper, Is the error indicator on or blinking, Troubleshooting 7-9

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If one of the following problems occurs during use, try the actions suggested here before contacting technical support.

Check the Following First

Is the power switched ON?

Ensure that the power cord is securely plugged into the machine and into the wall outlet.

Ensure that electricity is supplied from the power cord. Use another power cord or verify that cord is broken using a voltmeter.

Turn ON the power switch.

If there is no problem

Has the power switch been just turned ON?

Wait a moment for the machine starts and warm up.

If there is no problem

Is the machine in Sleep mode?

Press [

] (Energy Saver) on the operation panel to exit the Sleep mode.

If there is no problem

Are the settings proper?

If the machine emits the entry error tone and does not start operating when you press [

] (Start), your combination of

settings may be invalid. Recheck the settings.

If there is no problem

Is the Error indicator on or blinking?

Ensure that paper is loaded properly in the paper cassette or multi-purpose tray.

“Loading Paper” (


Check if paper is jammed.

Clearing Jams” (


Turn OFF the power switch of the machine, wait for more than 10 seconds, and then turn it ON. If the problem is solved, the
Error indicator will turn off and the display will return to standby mode. If the Error indicator keeps blinking, unplug the power
cord and contact your local authorized Canon dealer or the Canon help line.

If there is no problem