Wyse WY-60 Maintenance Manual page 51

ACTION
11. Wait until the screen displays
the Walking RAM Character
Test, then hold down the
SPACEBAR until the test pattern
stops flashing.
12. c.3.ll test pattern 0 by pressing
the CTRL and A keys
simul taneously.
13. If you don't have a reticle,
measure the margins on the top,
bottom, and both sides of
test pattern 0 with a
millimeter ruler.
If you have a reticle, see
Append ix D.
COMMENTS
You will see the test
pattern M.
You can toggle between
patterns 0 and M with the
CRTL A keystroke command.
Both test patterns are
described and illustrated
in "Test Patterns" in
this chapter.
When toggling between
test patterns 0 and M,
you will find another
pattern--the character/
attribute test pattern.
It contains several rows
of characters, each
displayed with a
different attribute'.
Look at this pattern when
you are troubleshooting.
You should not depend on
measurements from this
test pattern during
alignment.
Each margin should
measure 11 mm +2mm. If
they don't, see "Aligning
the Terminal Display."
14.
15.
Look at the display.
Press CTRL A.
4-4
If there is barreling or
pincushioning, if any of
the display edges aren't
straight, or if there are
size or centering
problems, see "Aligning
the Terminal Display."
You will see test
pattern M on the screen.