Service Manual

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 con-
nector for proper connection. If the
problem persists, run the Keyboard
Test Group in the Dell Diagnostics
to determine whether the key-
board or keyboard controller is
faulty. If the keyboard controller is
faulty, replace the system board.
3-3-1 CMOS failure Run the System Set Test Group in
the Dell Diagnostics to isolate the
problem.
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
Run the Video Test Group in the
Dell Diagnostics.
3-4-2 Search for video
ROM failure
Ensure that the monitor cable is
correctly connected. If the problem
persists, 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.
Table 3-1. System Beep Codes (continued)
Code Cause Corrective Action