HP LineJet Série Guide De Référence Rapide page 74

Chapter 1
Power Stacker Option
5.
Stack the 3-5 sheets of paper on top of the wire paper tent,
making sure the paper lies with the natural folds.
6.
Press the ON LINE key, from either the front or rear panel, to
return the printer to its online state.
The stacker frame then returns to its proper position for printing.
7.
Check that the paper is still centered between the paper
guides.
8.
Close the cabinet rear door.
9.
If necessary proceed to "Setting Top-Of-Form" on page 38.
10.
You are now ready to print.
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