Compaq D51s Troubleshooting Guide - Page 56

L = Long, S = Short, System Unit Error

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Post Error Messages Numeric Codes and Text Messages Code/Message 303-Keyboard Controller Error Beeps None Probable Cause I/O board keyboard controller. 304-Keyboard or None System Unit Error Keyboard failure. 401-Parallel Port 1 Address Assignment Conflict 402-Monochrome Adapter Failure 403-Parallel Port 3 Address Conflict Detected 404-Parallel Port Address Conflict Detected 2S* 1L,2S* 2S* 2S* IRQ address conflicts with another device. Monochrome display controller. IRQ address conflicts with another device. Both external and internal ports are assigned to parallel port X. 410-Audio 2S* Interrupt Conflict 411-Network 2S* Interface Card Interrupt Conflict *L = Long, S = Short IRQ address conflicts with another device. IRQ address conflicts with another device. Recommended Action 1. Reconnect keyboard with computer turned off. 2. Replace the system board. 1. Reconnect the keyboard with computer turned off. 2. Ensure that none of the keys are depressed. 3. Replace the keyboard. 4. Replace the system board. Reset the IRQ. Replace the Monochrome display controller. Reset the IRQ. 1. Remove any parallel port expansion cards. 2. Clear CMOS. 3. Reconfigure card resources and/or run Computer Setup. Reset the IRQ. Reset the IRQ. A-6 Troubleshooting Guide

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A–6
Troubleshooting Guide
Post Error Messages
303-Keyboard
Controller Error
None
I/O board keyboard
controller.
1. Reconnect keyboard with
computer turned off.
2. Replace the system board.
304-Keyboard or
System Unit Error
None
Keyboard failure.
1. Reconnect the keyboard
with computer turned off.
2. Ensure that none of the
keys are depressed.
3. Replace the keyboard.
4. Replace the system board.
401-Parallel
Port 1 Address
Assignment
Conflict
2S*
IRQ address conflicts
with another device.
Reset the IRQ.
402-Monochrome
Adapter Failure
1L,2S*
Monochrome display
controller.
Replace the Monochrome
display controller.
403-Parallel Port
3 Address
Conflict Detected
2S*
IRQ address conflicts
with another device.
Reset the IRQ.
404-Parallel Port
Address Conflict
Detected
2S*
Both external and
internal ports are
assigned to
parallel port X.
1. Remove any parallel port
expansion cards.
2. Clear CMOS.
3. Reconfigure card
resources and/or run
Computer Setup.
410-Audio
Interrupt Conflict
2S*
IRQ address conflicts
with another device.
Reset the IRQ.
411-Network
Interface Card
Interrupt Conflict
2S*
IRQ address conflicts
with another device.
Reset the IRQ.
*L = Long, S = Short
Numeric Codes and Text Messages
Code/Message
Beeps
Probable Cause
Recommended Action