Chapter 4. General Checkout - Lenovo ThinkCentre 3026 Maintenance Instructions Manual

Chapter 4. General checkout

General error messages appear if a problem or conflict is found by an application
program, the operating system, or both. For the explanation of these messages,
refer to the information supplied with that software package.
Before replacing a FRU, ensure that the latest level of BIOS is installed on the
system. A down-level BIOS might cause false errors and unnecessary replacement
of the system board. For more information on how to determine and obtain the
latest level BIOS, see "BIOS levels" on page 325.
Note: For computer models that do not have an internal hard disk drive and use a
remote hard disk drive accessed through the Secure Managed Client - Storage
Array (SMC - Storage Array):
v You might receive the error message "No operating system found. Press F1 to
v If the SMC login prompt disappears before you log in and then a black screen
Use the following procedure to help determine the cause of a problem:
1. Turn off the computer and all external devices.
2. Check all cables and power cords.
3. Set all display controls to the middle position.
4. Turn on all external devices.
5. Turn on the computer.
6. Look at the following conditions and follow the instructions:
7. Run the Diagnostic programs. See Chapter 5, "Diagnostics," on page 45.
© Copyright Lenovo 2010
Attention
The drives in the computer you are servicing might have been rearranged or
the drive startup sequence might have been changed. Be extremely careful
during write operations such as copying, saving, or formatting. Data or
programs can be overwritten if you select an incorrect drive.
repeat boot sequence." In this case, press Ctrl+Alt+Delete instead of F1 to
establish a connection to the storage area network where your operating system
is stored. Verify that the user name is not logged on in another location.
displays, contact your administrator.
v Look for displayed error codes
v Listen for beep codes
v Look for readable instructions or a main menu on the display.
If you did not receive the correct response, proceed to step 6.
If you do receive the correct response, proceed to step 7.
v If you hear beep codes during POST, go to "Beep symptoms" on page 74.
v If the computer displays a POST error, go to "POST error codes" on page 74.
v If the computer hangs and no error is displayed, turn off the computer and
the power. Then, turn the power and the computer back on, continue at step
7.
v If you receive an error, replace the part that the diagnostic program calls out
or go to "Diagnostic error codes" on page 57.
v If the test stops and you cannot continue, replace the last device tested.
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