Epson Apex-80 - Manual (Page 29)

2. Turn the power switch off, then hold down the DRAFT button on
the control panel while you turn the power back on. The Apex80
begins printing letters, numbers, and other characters that are
stored in its ROM (Read Only Memory) in draft mode. (If DIP
switch 1-5 has been turned on, the test will be performed in NLQ
mode, as in step 4 below.)
3. When printing starts, you can release the DRAFT button; the
printing continues until you turn the printer off or until the printer
runs out of paper.
4. To perform the same test in the NLQ mode, load another sheet of
paper. Turn the printer off, then turn it back on while holding
down the NLQ button. Sans Serif and Roman fonts alternate for
this test. Partial results of both tests are shown in Figure 1-20.
Figure 1-20.
Test pattern
D R A F T
N L Q
1-22
Setting
Up