Canon iPF755 User Manual page 667

The printer mode is indicated as follows.
*1: The printer automatically enters Sleep mode when idle for a specific period (by default, five minutes), that is,
if no print jobs are received or buttons are pressed while all covers are closed. However, it does not enter
Sleep mode while error messages are displayed.
*2: In Sleep mode, any button can be pressed except the Power button to recover from Sleep mode. Sleep mode is
also terminated if a print job is received or a command is issued from RemoteUI.
• Error display
Mode transition during error display is as follows.
iPF755
Printer Parts > Control Panel
Control Panel Display
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