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Compaq Professional Workstation AP200 Reference Guide
Writer: M. Church Project: Compaq Professional Workstation AP200 Reference Guide Comments: 352620-003
File Name: L-APPE.DOC Last Saved On: 12/14/98 2:40 PM
COMPAQ CONFIDENTIAL - NEED TO KNOW REQUIRED
Power-On Self Test Message
Continued
Message Beeps* Probable Cause Recommended Action
301-Keyboard Error None Keyboard failure Reconnect keyboard with
computer turned off.
303-Keyboard
Controller Error
None I/O board keyboard controller
1. Replace the
keyboard.
2. Replace the system
board.
304-Keyboard or
System Unit Error
None Keyboard failure
1. Reconnect the
keyboard with
computer turned
off.
2. Replace the
keyboard.
3. Replace the system
board.
402-Monochrome
A
dapter Failure
1L, 2S Monochrome display controller
is defective.
Replace the monochrome
display
controller.
404-Parallel Port
A
ddress Conflict
Detected
2S Both external and internal ports
are assigned to parallel port X.
Run Computer Setup or
Windows NT utilities.
501-Display Adapter
Failure
1L, 2S Video display controller Replace the graphics
board.
* L = Long, S = Short
Continued