External Visual Inspection - Dell Dimension V400 Service Manual

2-2 Dell Dimension V xxx and V xxx c Systems Service Manual
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 electrical outlets.
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
connectors 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.
4. Verify that any devices attached to the serial port, parallel port, and USB
connectors are properly connected.
Each of the serial, parallel, and USB 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. For systems with an onboard network interface controller (NIC), verify that
both ends of the network cable are properly connected.
Press one end of the unshielded twisted pair (UTP) Ethernet cable into the
NIC connector until the cable snaps securely into place. Connect the other
end of the cable to an RJ45 jack wall plate or to an RJ45 port on a UTP con-
centrator or hub, depending on your network configuration.
6. 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.
7 . 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.
8. 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.