IBM XT 286 Operation Manual page 138

FaUiire Symptoms
If your system has any of the following sjnnptoms, take
the action described. If your system has more than one
of the symptoms, take the action described for the first
symptom.
SYMPTOM
ACTION
No BEEP
Have the system unit serviced.
More than one BEEP
Have the system unit serviced.
None of the keys on the
keyboard work
Have system unit, keyboard,
and cable serviced.
Only some of the keys on
the keyboard work
Have the keyboard and cable
serviced.
Totally blank screen
Continue with "Display
Problems" on page 5-17.
No cursor displayed
Have the system unit serviced.
Only the cursor is displayed
Have the system unit serviced.
Screen is unreadable Continue with "Display
Problems" on page 5-17.
Missing characters on the
screen
Continue with "System Tests"
on the next page.
Wrong characters on the
screen
Have the system unit serviced.
Wrong Screen Appears
Have the system unit serviced.
n
If your system does not have any of the symptoms
listed above, continue with "System Tests" on the next
page.
5-10 Testing
August 1986