HP Color LaserJet Enterprise CP4525 Printer series - Manual (Page 179)

4. Remove the new print cartridge from its
protective bag.
NOTE: Be careful not to damage the memory
tag on the print cartridge.
5. Grasp both sides of the print cartridge and
distribute the toner by gently rocking the print
cartridge.
6. Remove the orange protective cover from the
print cartridge.
CAUTION: Avoid prolonged exposure to
light.
CAUTION: Do not touch the green roller.
Doing so can damage the cartridge.
ENWW Replacement instructions 165