IBM 6587 User Guide - Page 67

Monitor Problems, Action, General Problems, Intermittent Problems, Keyboard, Mouse, or Pointing,

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Monitor Problems Only the cursor appears. Wrong characters appear on the screen. Action Have the computer serviced. Have the computer serviced. General Problems Problems such as broken cover locks or indicator lights not working. Action Have the computer serviced. Intermittent Problems A problem occurs only occasionally and is difficult to detect. Action Verify that: 1. All cables and cords are securely connected to the rear of the computer and attached options. 2. When the computer is turned on, air is flowing from the rear of the computer at the fan grille. If there is no air flow, the fan is not working. This causes the computer to overheat and shut down. 3. The last external device in each SCSI chain is terminated correctly. (See your SCSI documentation.) If the items above are correct, have the computer serviced. Keyboard, Mouse, or PointingDevice Problems All or some keys on the keyboard do not work. Action 1. Make sure the keyboard cable is properly connected to the computer. 2. Make sure the computer and the monitor are turned on. If the items above are correct, have the computer serviced. Chapter 5. Solving Problems 57

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Monitor Problems
Action
Only the cursor
appears.
Have the computer serviced.
Wrong characters
appear on the screen.
Have the computer serviced.
General Problems
Action
Problems such as
broken cover locks or
indicator lights not
working.
Have the computer serviced.
Intermittent Problems
Action
A problem occurs
only occasionally and
is difficult to detect.
Verify that:
1.
All cables and cords are securely connected to the rear of the computer and attached options.
2.
When the computer is turned on, air is flowing from the rear of the computer at the fan grille.
If there
is no air flow, the fan is not working.
This causes the computer to overheat and shut down.
3.
The last external device in each SCSI chain is terminated correctly.
(See your SCSI documentation.)
If the items above are correct, have the computer serviced.
Keyboard, Mouse,
or Pointing-
Device Problems
Action
All or some keys on
the keyboard do not
work.
1.
Make sure the keyboard cable is properly connected to the computer.
2.
Make sure the computer and the monitor are turned on.
If the items above are correct, have the computer serviced.
Chapter 5.
Solving Problems
57