There are five LEDs and a button on the Control Panel. The top most
LED is the power indicator. The remaining four LEDs indicate various
printer status and errors.
The control panel button is used for many purposes, for example, to
pause/resume job processing, reset printer parameters, print status
page, or show the details of fatal hardware errors.
The following diagram is a representation of the control panel.
The LEDs are defined and labeled as follows: