HP LaserJet 2100

To start engine cleaning:

1. Make sure the printer is turned on and in the ready state. Load a transparency in Tray 1.
2. Press and hold the [GO]and [JOB CANCEL] buttons until all lights flash. This will take about 10 seconds. Release the buttons when the lights flash.
3. Press the [GO] button.
4. Discard the blank page produced from the engine cleaning process.