IBM Personal Computer XT Manual To Operations page 59

Example 5 (Color Display Only)
Screen Response Audio Response
Action
~
1;;III1II1I11I1I~1
Screen has
It
1 short beep
It
See below
wrong or no
color
If
you are using a TV as your display, verify that the
color is correct by disconnecting your TV from the unit
and operating the TV normally. Also, ensure your TV
is compatible with NTSC standard. If you have an IBM
Color Display, go to Test 9000.
Example 6
Screen Response Audio Response
Action
Have the
display
Blank screen or 1 short beep
serviced
obvious TV
type problems
(e.g. roIling
screen or
shadows)
If you have an IBM Color Display, go to Test 9000.
April 1984
Start 30-11