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11-6
Diagnostic Tools
Writer: Project: Diagnostic Tools Comments:
File Name: O-ch11.doc Last Saved On: 4/22/97 1:11 PM
POST Error Messages
Continued
Error Code
Audible
Beeps*
Probable Source of
Problem
Action
ZZ
-301-Keyboard
Error
None
Keyboard failure. (
ZZ
represents the Keyboard
Scan Code.)
1.
A key is stuck.
Try to free it.
2.
Replace the
keyboard.
303-Keyboard
Controller Error
None
System board, keyboard,
or mouse controller failure
Contact your service
provider.
304-Keyboard or
System Unit Error
None
Keyboard, keyboard cable,
or system board failure
1.
Make sure the
keyboard is
attached.
2.
Contact your
service provider.
40X-Parallel Port X
Address Assignment
Conflict
2S
Both external and internal
ports are assigned to
parallel port X.
Run the System
Configuration Utility.
402-Monochrome
Adapter Failure
1L,2S
Monochrome display
controller
Run Diagnostics.
Contact your service
provider
501-Display Adapter
Failure
1L,2S
Video display controller
Run Diagnostics.
Contact your service
provider
601-Diskette
Controller Error
None
Diskette controller circuitry
failure
Contact your service
provider.
* L= Long
S = Short
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