Patent ID: 7877034

Claim:
An image forming apparatus, comprising: a display for displaying a work item for a maintenance in the form of a guidance display; a detection section for detecting whether the work item currently displayed on the display is executed or not; an energization controller for supplying/blocking power supply to a first electric component to be maintained and/or to a second electric component being located adjacent to the first electric component; a connection judging section for judging whether the first/second electric components are electrically connected with the power supply or not; and a controller for controlling the display to switch displays of the work item and for controlling the energization controller to switch supplying/blocking power supply to the first/second electric component in accordance with a detection result of the detection section; wherein the controller causes the display to display an alarm and a guidance display of a corresponding work, when the connection judging section judges the electric components not being electrically connected with the power supply, when the power supply is resumed after blocking the power supply to the first/second electric component by the energization controller.