External Visual Inspection
The external visual inspection consists of a quick inspection of the exterior of the computer, the monitor, the keyboard, any peripherals, and cables. While per- forming 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 attached to one of the serial port connectors, and its captive screws must be secure enough to ensure a firm connection.
4.Verify that any devices attached to the serial and parallel port connec- tors are properly connected.
Each of the serial and parallel interface cables must be attached to an appro- priate 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.
5.Verify that the video interface cable is firmly attached to the connector on the I/O panel and to the connector on the back of the monitor.
For proper connection of the video interface cable, see the documentation for the monitor.
6.Inspect all external monitor controls for any obvious damage or improper settings.
For proper settings of the video monitor controls, see the documentation for the monitor.
7.Inspect the keyboard to ensure that no keys are sticking.
If one or more keys are sticking, it may be necessary to replace the keyboard.
8.Inspect the exterior of the computer, including all controls and indica- tors, and all
Does the inspection reveal any problems?
Yes. Proceed to the appropriate procedure in Chapter 4, “Removing and Replacing Parts.”
No. Proceed to the next section, “Observing the Boot Routine.”