How to Reset the Maintenance Count on an HP LaserJet 4050
- 1). Shut the printer down, and remove the power cord from its outlet. Leave the unit unplugged for approximately one minute.
- 2). Plug the printer back in. Hold the left side of the "Item" and "Value" buttons simultaneously. Press the "Power" button to turn the printer on while still holding those keys.
- 3). Watch for the "Reset Maint Count" message to appear, followed by the "Initializing" message. The maintenance kit count has now been reset.
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