HP 220240 - Manual (Page 158)

7.1.1 Cleaning the Internal Surfaces
Clean the transfer and paper feed areas inside the printer using the
following procedure.
1. Be sure the printer is not printing and the display reads
00 READY.
2. Press the power switch on the back of the printer to the O (OFF)
position.
MLO-005117 (Figure 7-1; 15 picas)
7–2 Operator’s Guide