IBM Personal Computer Manual To Operations page 183

5
Are the characters in your test pattern correct
and is each character only one color?
ARE THE CHARACTERS ON THE PRINTED
TEST PATIERN CORRECT. AND EACH
CHARACTER A SINGLE COLOR
(V
IN)
?
YES - Press
~
then
~
and
go to Step 8.
NO - Press
U
then
~
and
continue on the next step.
April 1984
Test 7030-5