Olivetti PG L2028 Special Operation Manual page 39

Loading Paper
Note Do not load paper above the triangle mark located on
the width guide.
6
Insert the paper cassette into the slot in the printer. Push it straight in
as far as it will go.
There is a paper gauge on the left side of the front of the paper
cassette to indicate the remaining paper supply. When paper is
exhausted, the pointer will go down to the level of (empty).
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