Avoiding interrupt assignment conflicts – Dell Latitude CSx H User Manual
Page 35
When the computer emits a flash code, write it down on a copy of the
Diagnostics Checklist
and then look up its cause and meaning in
you are unable to resolve the problem, use the
Dell Diagnostics
to identify a more serious cause. If you are still unable to resolve the problem,
call
Dell
for technical assistance.
Table 2. Flash Codes and Corrective Actions
Avoiding Interrupt Assignment Conflicts
Problems can arise if two devices attempt to use the same interrupt request (IRQ) line. To avoid this type of conflict, check the documentation for
the default IRQ line setting for each installed device. Then consult
to configure the device for one of the available IRQ lines.
1 Num Lock
2 Caps Lock
3 Scroll Lock
Message
Cause
Action
1-1-3
NVRAM write/read failure.
Run the System Set tests in the
Dell Diagnostics
. If the program does not
load,
call Dell
for technical assistance.
1-1-4
ROM BIOS checksum failure.
Run the System Set tests in the
Dell Diagnostics
. If the program does not
load,
call Dell
for technical assistance.
1-2-1
Programmable interval timer failure.
Run the System Set tests in the
Dell Diagnostics
. If the program does not
load,
call Dell
for technical assistance.
1-2-2
DMA initialization failure.
Run the System Set tests in the
Dell Diagnostics
. If the program does not
load,
call Dell
for technical assistance.
1-2-3
DMA page register write/read failure.
Run the System Set tests in the
Dell Diagnostics
. If the program does not
load,
call Dell
for technical assistance.
1-3-1
through
2-4-4
An installed memory module is not being
properly identified or used.
Make sure that a memory module is installed in one of the memory module
sockets on the system board. The computer will not function unless at least
one memory module is installed.
3-1-1
Slave DMA register failure.
Run the System Set tests in the
Dell Diagnostics
. If the program does not
load,
call Dell
for technical assistance.
3-1-2
Master DMA register failure.
Run the System Set tests in the
Dell Diagnostics
. If the program does not
load,
call Dell
for technical assistance.
3-1-3
Master interrupt mask register failure.
Call Dell
for technical assistance.
3-1-4
Slave interrupt mask register failure.
Call Dell
for technical assistance.
3-2-4
Keyboard controller test failure.
Run the Keyboard Controller test in the
Dell Diagnostics
.
3-3-4
Display memory test failure.
Run the Video Memory test in the
Dell Diagnostics
.
3-4-1
Display initialization failure.
Run the Video tests in the
Dell Diagnostics
.
3-4-2
Display retrace test failure.
Run the Video tests in the
Dell Diagnostics
.
4-2-1
No timer tick.
Call Dell
for technical assistance.
4-2-2
Shutdown failure.
Call Dell
for technical assistance.
4-2-3
Gate A20 failure.
Call Dell
for technical assistance.
4-2-4
Unexpected interrupt in protected mode.
Call Dell
for technical assistance.
4-3-1
Memory failure above address 0FFFFh.
Run the System Memory tests in the
Dell Diagnostics
.
4-3-3
Timer chip counter 2 failure.
Call Dell
for technical assistance.
4-3-4
Time-of-day clock stopped.
Call Dell
for technical assistance.
4-4-1
Serial port failure.
Run the Serial/Infrared Ports tests in the
Dell Diagnostics
.
5-1-2
No usable memory.
Run the System Memory tests in the
Dell Diagnostics
.