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About Your System 33
3-1-1 Slave DMA-register failure Faulty system board. See "Getting Help"
on page 127.
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 CMOS failure
3-3-2 System configuration check
failure
3-3-3 Keyboard controller not
detected
3-3-4 Video memory test failure
3-4-1 Screen initialization failure
3-4-2 Screen-retrace test failure
3-4-3 Video ROM search failure
4-2-1 No timer tick Faulty system board. See "Getting Help"
on page 127.
4-2-2 Shutdown test failure
4-2-3 Gate A20 failure
4-2-4 Unexpected interrupt in
protected mode
See "Troubleshooting Expansion Cards"
on page 113.
4-3-1 Improperly installed or faulty
memory modules
See "Troubleshooting System Memory" on
page 108.
4-3-2 No memory modules installed
in the first memory module
connector
Install a memory module in the first
memory module connector. See "System
Memory" on page 81.
Table 1-6. System Beep Codes (continued)
Code Cause Corrective Action
book.book Page 33 Thursday, August 30, 2007 3:30 PM