HP 220 - Manual (Page 80)

In the following steps, take care not to cut
yourself on the encoder strip inside the
plotter.
1 Remove the window D page 6Ć15.
SO OLOGOHOGOF
2 Loosen the two latch screws on the underside of the center cover.
3 Slide the two latches horizontally towards the center of the plotter, clear of the two
endcovers.
Torx-15
6Ć16 Removal and Replacement C3187Ć90000
Removing the Center Cover