Beep Codes For Non-Fatal Errors; Post And Boot Messages - Digital Equipment DECpc LP Service Maintenance Manual

Digital DECpc LP
Beep Codes for Fatal Errors
Beep Code
4-2-3
4-2-4
4-3-1
4-3-3
4-3-4
4-4-1
4-4-2
4-4-3

Beep Codes for Non-Fatal Errors

Beep Code
3-3-4
3-4-1
3-4-2

POST and Boot Messages

The POST displays messages to alert to errors in hardware, software, and firmware or to provide operating
information about the computer.
Each time the POST displays a message on the screen, the computer's speaker beeps twice. If an error
occurs before the monitor is initialised, specific beep codes sound to alert to a problem. The following
table lists a general grouping of system messages. In addition, each message is accompanied by text
describing the message and in most cases, a recommended solution to the problem.
NOTE
Italics indicate variable parts of a message such as memory addresses, hexadecimal
values, and so on.
These messages can differ at each occurrence.
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(continued)
Error Message
Gate A20 failure
Unexpected interrupt in protected mode
RAM failure (above 0FFFFh)
Interval timer 2 failure
Time-of-day clock failure
Serial port failure
Parallel port failure
Math coprocessor failure
Error Message
Screen memory or failure
Screen initialization or failure
Screen retrace or failure
Troubleshooting
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