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2-2 Dell Dimension XPS H233 and XPS H266 Systems Service Manual
E
xternal 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 PS/2-compatible mouse, the keyboard and mouse interface cable con-
nectors are identical except for their labels. Verify that the keyboard and
mouse interface cable connectors are firmly attached to the proper connec-
tors on the back of the computer. To identify the proper connectors, see
Figure 1-4.
For a serial mouse, the mouse interface cable must be firmly attached to the
serial port connector, 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 cable connectors 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.
5. Verify that the video interface cable connector is firmly attached to the
video connector 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 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.