HP 220240 - Manual (Page 30)

2.2 Powering the Printer Off
Power the printer off using the following procedure.
1. Be sure the printer is not printing and that the Data indicator is not
on.
CAUTION: Do not power the printer off while it is printing. Powering
the printer off during printing causes paper jams and loss of data.
Powering the printer off while the Data indicator is on causes the data
in the print buffer to be lost.
2. Press the power switch on the back of the printer to the O (OFF)
position.
MLO-005117 (Figure 2-2; 15 picas)
NOTE:
After powering the printer off, always wait at least two seconds
before you power the printer back on. This waiting period ensures that
the printer will initialize (cycle) properly when it is powered back on.
Operating Information 2–3