HP 4500/4550 Printers

1. Turn the printer off
2. Hold down the
CANCEL JOB and SELECT keys and turn the printer on, then wait until the display goes blank and the three LED's come on
3. Press the right side of the
MENU key, then press the SELECT key
4. You will enter
SERVICE MODE after the normal test completes
5. Press the
ITEM key until the FUSER MAINTENANCE COUNT appears
6. Press
VALUE +/- to change to zero
7. Press
SELECT to save
8. Press
GO; the printer should return to READY