Canon imageRUNNER Advance 4251 Basic Operation Gude page 154

If the machine still does not operate normally, follow the procedure below, and
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then contact your local authorized Canon dealer.
1. Turn the main power switch OFF.
2. Remove the power plug from the power outlet.
Do not connect or disconnect the power cord with wet hands, as this may result in electrical
shock.
Always grasp the power plug when disconnecting the power cord. Pulling on the power cord may
expose or snap the core wire, or otherwise damage the power cord. If the power cord is damaged,
this could cause current to leak, resulting in a fi re or electrical shock.
When you contact your local authorized Canon dealer, have the following information available:
• Product name
• Details of the malfunction
• The error code displayed on the touch panel display
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