Service manual

44 Installation ENWW
Testing media specifications
The following tests describe ways to make sure that the media meets the specifications listed in
this manual and the HP LaserJet Printer Family Print Media Guide. See “Tools and suppliers” on
page 49 for help in obtaining tools to perform these tests.
Basis-weight field test
The basis weight should be indicated on the ream label. If the label is not available, a simple field
test can identify the basis weight of paper. The basis weight of paper is equal to the weight of
2000 sheets of paper, or four full reams. Weigh a full ream on a postal scale and then multiply
that weight by four. Or, weigh 10 sheets of paper, divide that weight by 10, multiply by 2000, and
then divide by 16.
Note Example:
10 sheets weigh 1.6 ounces
0.16 ounce x 2000 = 320 ounces
320 ounce ÷ 16 ounce/lb = 20 lb paper
Amount Formula
4 reams weight = basis weight
1 ream weight x 4 = basis weight
10 sheets (weight divided by 10) x 2000 and then divided by 16 = basis weight