HP Color LaserJet 5500 Printer series - Manual (Page 122)

CAUTION Do not place the cyan print cartridge on the transfer unit while it is open. If the transfer
unit is damaged, severe print quality problems may result.
4. Remove the OHT sensor cleaning brush from the base of the printer.
5. Insert the brush into the base notch and brush from right to left four or five times.
CAUTION Do not brush back and forth over the sensor. This will smear dust over
the sensor and cause printer errors.
6. Replace the OHT sensor cleaning brush into the base of the printer.
7. Align the cyan print cartridge with the tracks inside the printer and insert the cartridge until
it is completely seated.
8. Close the front cover, and then close the top cover.
112 Chapter 7 Maintenance EN_WW