Dell OptiPlex E1 - Manual (Page 32)

2-2 Dell OptiPlex E1 Managed PC Service Manual
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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:
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For a PS/2-compatible mouse, the keyboard and mouse interface cable
connectors are identical except for their labels. For a serial mouse, the
mouse interface cable must be firmly attached to one of the serial port con-
nectors, and its captive screws must be secure enough to ensure a firm
connection.
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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.
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For proper connection of the video monitor, see the documentation for the
monitor.
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For proper settings of the video monitor controls, see the documentation
for the monitor.
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If one or more keys are sticking, it may be necessary to replace the
keyboard.