NCR 7458 - Manual (Page 21)

Chapter 2: POST Diagnostics 2-3
Beeps Error Message Corrective Action
Video Errors
1-3-1-1 0220: Monitor type does not
match CMOS - Run SETUP
Should not happen,
unless CMOS is
corrupted. Default
Parameters in Setup.
Memory Errors
1-4-1-1 0230: System RAM Failed at
offset:
Replace Memory
module
1-4-1-2 0231: Shadow Ram Failed at
offset:
Replace Memory
module
1-4-1-3 0232: Extended RAM Failed at
address line:
Replace Memory
module
1-4-1-4 Memory type mixing detected. Replace Memory
module
1-4-2-1 Single-bit ECC error occurred. Replace Memory
module
1-4-2-2 Multiple-bit ECC error
occurred.
Replace Memory
module
CMOS Errors
2-2-1-1 0250: System battery is dead -
Replace and run SETUP
Replace CMOS battery
2-2-1-2 0251: System CMOS checksum
bad - Default configuration
used
Run Setup
Timer Errors
2-3-1-1 0260: System timer error Replace Motherboard
Real Time Clock Errors
2-4-1-1 0270: Real time clock error Replace Motherboard