HP LASERJET 9000MFC - Manual (Page 74)

7 Maintenance 74
Product cleaning
Product cleaning
To maintain print quality, clean the product thoroughly:
l every time you change the print car tridge
l whenever print-quality problems occur
Clean the outside of the product with a lightly water-dampened cloth. Clean the inside with only a dry, lint-free
cloth. Observe all warnings and cautions regarding the cleaning tasks.
WARNING! Avoid touching the fusing area when cleaning the product. It can be HOT.
CAUTION To avoid permanent damage to the print cartridge, do not use ammonia-based cleaners on or around
the product except as directed.
ENWW