Epson Apex 20020, 20040 User Manual page 200

Error code Message
Parallel port
901 ERROR PIN p
Serial port (RS-232C)
control signal ALWAYS LOW
1101
1101
control signal ALWAYS HIGH
1102 TIMEOUT ERROR
1103 VERIFY ERROR
Alternate serial port
control signal ALWAYS LOW
1201
1201 control signal ALWAYS HIGH
1202 TIMEOUT ERROR
1203 VERIFY ERROR
Dot-matrix printer
1401 status
Hard disk drives 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