Dell OptiPlex GXpro Service Manual - Page 30
External Visual Inspection, Features
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External Visual Inspection The external visual inspection consists of a quick inspection of the exterior of the system unit, 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 system unit, the monitor, and all peripherals. 2. Verify that all power cables are properly connected to the system unit, 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 system unit. For a PS/2-compatible mouse, the keyboard and mouse interface cable connectors are identical except for their labels. If needed, see "System Features" in Chapter 1. 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. Verify that any devices connected to the serial ports, parallel port, and USB are properly attached. Each of the serial, parallel, and USB interface cables must be firmly attached to an appropriate connector on the back of the system unit 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 video expansion card and to the connector on the back of the monitor. For proper connection of the video monitor, 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. 2-2 Dell OptiPlex GXpro Systems Service Manual