Laser/scanner unit 1 Remove the top cover assembly (see page 232). 2 On HP Color LaserJet 8550 printer models, remove four screws, two on each side (callout 1 shows two of them), from the laser/ scanner shield and lift the shield out of the printer (the shield is not present on HP Color LaserJet 8500 printer models). 21 Figure 98. Laser/scanner shield EN Top assemblies 247