Epson 486SX - Manual (Page 198)

System diagnostics error messages (continued)
Error code Message
Math coprocessor (continued)
710 Coprocessor precision error
Parallel port (printer interface)
901 Error pin p
Serial port (RS-232C port)
1101 control signal always low
1101 control signal always high
1102 Timeout error
1103 Verify error
Alternate serial port
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-13