Dell OptiPlex GXa, Руководство по обслуживанию

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2-8 Dell OptiPlex GXa and OptiPlex NX Systems Service Manual
suspected hardware problem, run the hard-disk–based diagnostics by following
these steps:
1. Turn on (or reboot) the system.
2. Press <Ctrl><Alt><F10> immediately after you see the following
message:
Press <Ctrl><Alt><Enter> for Setup.
If you wait too long and the operating system begins to load into memory,
let the system complete the load operation; then shut down the system and
try again.
Starting the diagnostics causes the Dell logo to appear on the monitor
screen, followed by a message indicating that the diagnostics is loading.
Before the diagnostics loads, a program tests the portion of main memory
(RAM) required for loading the diagnostics. If a main memory error is
detected, a message indicates which DIMM has failed. If no errors are found
in main memory, the diagnostics loads and the Diagnostics Menu appears.
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 adminis-
trator 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, refer to “Internal Visual Inspection”
found earlier in this chapter. 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