Epson 386SX - Manual (Page 231)

System diagnostics error codes and messages (continued)
Error code Message
Alternate serial port
1201 control signal ALWAYS LOW
1201 control signal ALWAYS HIGH
1202 TIMEOUT ERROR
1203 VERIFY ERROR
Dot-matrix printer
1401 status
Hard disk drive(s) and controller
1701 SEEK ERROR
1702 WRITE ERROR
1703 READ ERROR
1704 HEAD ERROR
1705 ERROR DETECTION ERROR
1706 ERROR CORRECTION ERROR
Alternate parallel port
2101 ERROR PIN p
Parallel port (on video adapter)
81nn ERROR PIN p
Performing System Diagnostics C-39