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Codes and Messages 3-3
3-1-1
3-1-2
3-1-3
3-1-4
Slave DMA-register
failure
Master DMA-
register failure
Master interrupt-
mask register failure
Slave interrupt-mask
register failure
Replace the system board.
3-2-4 Keyboard-controller
test failure
Check the keyboard cable and
connector for proper connection. If
the problem persists, replace the
system board.
3-3-1 CMOS failure Replace the system board.
3-3-2 System configura-
tion check failure
Replace the system board.
3-3-3 Keyboard controller
not detected
Replace the system board.
3-3-4 Screen initialization
failure
Ensure that the monitor cable is
correctly connected. If the problem
persists, replace the system board.
3-4-1 Screen-retrace test
failure
Ensure that the monitor cable is
correctly connected. If the problem
persists, replace the system board.
3-4-2 Search for video
ROM failure
Replace the system board.
4-2-1
4-2-2
No timer tick
Shutdown failure
Replace the system board.
4-2-3 Gate A20 failure Replace the system board.
4-2-4 Unexpected inter-
rupt in protected
mode
Ensure that all expansion cards are
properly seated, and then reboot
the system.
4-3-1 Faulty or improperly
seated DIMM,
DIMMs not installed
in sets of four, or a
faulty or improperly
seated memory
module
Be sure that the DIMMs are
installed in sets of four and in the
proper sockets for each memory
bank in use. If this does not
resolve the problem, remove and
reseat the DIMMs or the memory
module. If the problem persists,
replace the DIMMs or the memory
module.