HP Officejet Pro 8500A - Manual (Page 108)

4. Lift the handle of the printhead (which corresponds to the control-panel message)
and use it to pull the printhead out of its slot.
5. Obtain clean, dry, soft and lint-free cleaning material. Suitable materials include
paper coffee filters and eyeglass lens cleaning paper.
CAUTION: Do not use water.
6. Wipe the electrical contacts on the printhead but do not touch the nozzles.
NOTE: The electrical contacts are small copper-color squares, grouped on
one face of the printhead.
The nozzles are on a different face of the printhead. Ink is visible on the nozzles.
CAUTION: Touching the nozzles can cause permanent nozzle damage.
CAUTION: Ink can permanently mark clothing.
7. After cleaning, place the printhead on a sheet of paper or paper towel. Make sure
the nozzles are facing up and are not in contact with the paper.
Chapter 9
104 Solve a problem