Dell OptiPlex GX150 User Manual
Page 86
Warning Messages
A warning message alerts you to a possible problem and asks you to do something before execution continues. For example, before you format a
diskette, a message may warn you that you may lose all data on the diskette as a way to protect against inadvertently erasing or writing over the
data. These warning messages usually interrupt the procedure and require you to respond by typing y (yes) or n (no).
Diagnostics Messages
When you run a test group or subtest in the
, an error message may result. These particular error messages are not covered in this
section. Record the message on a copy of the Diagnostics Checklist found in "
Getting Help
." Also see "
Getting Help
" for instructions on obtaining
technical assistance.
Diagnostic LEDs
Should your system fail to operate, light-emitting diodes (LEDs) on the
of the chassis provide diagnostic codes that can
help you troubleshoot a system problem. The following sections describe the meaning of the diagnostic codes.
Front Panel LED
Table 3 lists the codes for the front panel diagnostic LED, gives their probable causes, and offers suggested corrective actions.
Table 3. Power Switch Diagnostic LED Codes
3-1-1
Slave DMA register failure
Run the System Board Devices tests in the
3-1-2
Master DMA register failure
Run the System Board Devices tests in the
3-1-3
Master interrupt mask register failure
See "
Getting Help
" for instructions on obtaining technical assistance.
3-1-4
Slave interrupt mask register failure
See "
Getting Help
" for instructions on obtaining technical assistance.
3-2-2
Interrupt vector loading failure
See "
Getting Help
" for instructions on obtaining technical assistance.
3-2-4
Keyboard Controller Test failure
Run the Keyboard tests in the
Getting Help
" for
instructions on obtaining technical assistance.
3-3-1
NVRAM power loss
Run the System Board Devices tests in the
3-3-2
NVRAM configuration
Run the System Board Devices tests in the
3-3-4
Video Memory Test failure
Run the VESA/VGA Interface tests in the
3-4-1
Screen initialization failure
Run the VESA/VGA Interface tests in the
3-4-2
Screen retrace failure
Run the VESA/VGA Interface tests in the
3-4-3
Search for video ROM failure
Run the VESA/VGA Interface tests in the
4-2-1
No time tick
See "
Getting Help
" for instructions on obtaining technical assistance.
4-2-2
Shutdown failure
See "
Getting Help
" for instructions on obtaining technical assistance.
4-2-3
Gate A20 failure
See "
Getting Help
" for instructions on obtaining technical assistance.
4-2-4
Unexpected interrupt in protected
mode
See "
Getting Help
" for instructions on obtaining technical assistance.
4-3-1
Memory failure above address
0FFFFh
Run the System Memory tests in the
.
4-3-3
Timer-chip counter 2 failure
See "
Getting Help
" for instructions on obtaining technical assistance.
4-3-4
Time-of-day clock stopped
See "
Getting Help
" for instructions on obtaining technical assistance.
4-4-1
Serial or parallel port test failure
Run the Serial Ports and the Parallel Ports tests in the
.
4-4-2
Failure to decompress code to
shadowed memory
Run the System Board Devices tests in the
4-4-3
Math-coprocessor test failure
Run the System Board Devices tests in the
4-4-4
Cache test failure
Run the System Board Devices tests in the
the documentation that accompanied your operating system and application programs.
CAUTION: Before servicing any components inside your computer, see "
Safety Information
."
Power LED Code
Cause
Action