3.Observe the user to determine if he or she is making an error, such as typing an incorrect key combination or entering a command incorrectly.
Is the problem a result of user error?
Yes. Instruct the user in the proper procedure, or direct him or her to the appropriate user documentation for the correct procedure.
No. Proceed to the next section, “External Visual Inspection.”
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The external visual inspection consists of a quick inspection of the exterior of the computer, the monitor, the keyboard, any peripherals, and cables. While performing the visual inspection, make any necessary corrections. To perform the external visual inspection, follow these steps:
1.Turn off the computer, the monitor, and all peripherals.
2.Verify that all power cables are properly connected to the computer, the monitor and peripherals, and their power sources.
3.Verify that the keyboard and mouse interface cables are firmly attached to the proper connectors on the back of the computer.
For a
For a serial mouse, the mouse interface cable must be firmly attached to one of the serial port connectors, and its captive screws must be secure enough to ensure a firm connection.
4.If any network cables are present, verify that they are attached properly.
5.Verify that any devices attached to the serial and parallel port connectors are properly connected.
Each of the serial and parallel port interface cables must be firmly attached to an appropriate connector on the back of the computer as well as to the interface connector on the device. The captive screws that secure these connectors at each end of the interface cable must be secure enough to ensure a firm connection.
6.Verify that the video interface cable is firmly attached to the video connec- tor on the back panel or to a video expansion card, and also to the connector on the back of the monitor.
For proper connection of the video monitor, see the documentation for the monitor.
