Maintenance and Service Guide

Service Manual Troubleshooting and Diagnostics 3-27
Beep Codes POST Description
4-4-2-1
Output one beep
4-4-2-2
Clear Huge Segment
4-4-2-3
Boot to Mini DOS
4-4-2-4
Boot to Full DOS
1 long,
2 short
Improper video configuration (reprogram EEPROM) or external ROM checksum
failure