Troubleshooting Charts
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 system and attached options.
2. When the system is turned on, air is flowing from
the rear of the system at the fan grill. If there is no
air flow, the fan is not working. This causes the
system to overheat and shut down.
3. The last external device in each SCSI chain is
terminated correctly. (See “SCSI Drives” on
page 201 for more information about SCSI
terminators.)
If the items above are correct, have the system 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 system.
2. Make sure that the system and the monitor are
turned on.
If the items above are correct, have the system serviced.
The mouse or pointing
device does not work.
Verify that the mouse or pointing-device cable is
securely connected and the device drivers are installed
correctly.
Note: The pointing-device port is also known as the
auxiliary-device port or mouse port.
If the problem recurs, have the system and the device
serviced.
Chapter 7. Solving Problems 353
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