Advanced Troubleshooting: Dell XPS 400 Service Manual
file:///T|/htdocs/systems/xps400/sm/adtshoot.htm[8/3/2012 3:11:19 PM]
3-4-2 Screen retrace failure
3-4-3 Search for video ROM failure
4-2-1 No time tick
4-2-2 Shutdown failure
4-2-3 Gate A20 failure
4-2-4 Unexpected interrupt in protected mode
4-3-3 Timer-chip counter 2 failure
4-3-4 Time-of-day clock stopped
4-4-1 Serial or parallel port test failure
4-4-4 Cache test failure
Message
Possible Cause
Corrective Action
8042 Gate-
A20 error
The keyboard controller failed
its test.
If you receive this message after you make
changes in the system setup program,
enter
the system setup
program and restore the
original value(s).
Address Line
Short!
An error in the address
decoding circuitry in the
memory has occurred.
Reseat the
memory modules
.
C: Drive
Error
C: Drive
Failure
The hard drive is not working
or is not configured correctly.
Ensure that the drive is installed correctly in
the computer and defined correctly in the
system setup
program.
Cache
Memory Bad,
Do Not
Enable
Cache
The cache memory is not
operating.
See "Contacting Dell" in your
Owner's Manual
for instructions on obtaining technical
assistance.
CH-2 Timer
Error
An error is occurring on the
timer on the system board.
See "Contacting Dell" in your
Owner's Manual
for instructions on obtaining technical
assistance.
CMOS Battery
State Low
CMOS
Checksum
Failure
CMOS System
Options Not
Set
CMOS Display
Type
Mismatch
CMOS Memory
Size
Mismatch
CMOS Time
and Date Not
Set
The system configuration
information in the system
setup program is incorrect or
the battery charge may be
low.
Enter the system setup
program, verify the
system configuration, and then restart the
computer.
Diskette
Boot Failure
Drive A or B is present but
has failed the BIOS POST.
Ensure that the drive is installed correctly in
the computer and defined correctly in the
system setup
program. Check the interface
cable at both ends.
DMA Error
DMA 1 Error
DMA 2 Error
Error in the DMA controller on
the system board.
The keyboard or
system board
may need to be
replaced.
FDD
Controller
The BIOS cannot
Ensure that the floppy drive or the
hard drive
is
