Advanced Troubleshooting: Dell Dimension E520 Service Manual
file:///T|/htdocs/systems/dimE520/en/SM_EN/adtshoot.htm[10/16/2012 1:04:50 PM]
3-1-1 Slave DMA register failure
3-1-2 Master DMA register failure
3-1-3 Master interrupt mask register failure
3-1-4 Slave interrupt mask register failure
3-2-2 Interrupt vector loading failure
3-2-4 Keyboard Controller Test failure
3-3-1 NVRAM power loss
3-3-2 NVRAM configuration
3-3-4 Video Memory Test failure
3-4-1 Screen initialization failure
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
System Messages
NOTE:
If the message you received is not listed in the table, see the documentation for either the operating system or
the program that was running when the message appeared.
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 (see
Entering System Setup
) 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 (see
Memory
).
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 (see
Entering System Setup
).
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
The system configuration
Enter the system setup program (see
Entering
