Dell OptiPlex N Service Manual (.pdf) - Page 30
Network Administrator's Guide., Getting Help.
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3. Observe the monitor screen for the Diagnostics Menu. This menu lets you choose the following options or exit to the MS-DOS® prompt: • Run Quick Tests - Runs selected tests from all test groups to quickly locate a failure or to indicate where further testing is needed to isolate a failure • Run All Tests - Runs all tests for a thorough test of the computer • Run Specific Tests - Tests a particular area or subsystem If the Diagnostics Menu does not appear, check with the network administrator to determine if the service partition was removed from the hard-disk drive. If it is not possible to run the hard-disk-based diagnostics, and if you are prepared to open the computer, proceed to the next section, "Internal Visual Inspection." Otherwise, see "Getting Help" found later in this chapter. The diskette-based diagnostics consists of the following test groups: • RAM Tests - Check all the directly addressable RAM • System Set Tests - Check the computer's system board components and verify their related functions • Video Tests - Verify proper operation of the video controller and the video control circuitry • Keyboard Tests - Verify the correct operation of the keyboard and the key- board controller chip • Mouse Test - Checks the functionality of the mouse controller and the operation of the mouse keys • Hard-Disk Drive Tests - Check the hard-disk drive controller and the stor- age capability of the hard-disk drive • Serial Ports Tests - Check the computer's interface with external devices connected through the serial ports • Parallel Port Tests - Check the computer's interface with external devices connected through the parallel port • Network Interface Tests - Verify the basic operation of the network inter- face controller, including read and write access to its registers and internal transmit and receive capability For a complete description of the hard-disk-based diagnostics, see "Hard-Disk- Based Diagnostics" in the online Network Administrator's Guide. NOTE: Further troubleshooting requires access to the inside of the computer. If you do not want to open the computer, proceed to the last section in this chapter, "Getting Help." 2-6 Dell OptiPlex N Systems Service Manual