Personal Computer User Manual

System diagnostics error codes and messages (continued)
Error code
Message
Color graphics adapter and CRT
501
V-RAM ERROR
503 ATTRIBUTE ERROR
504
CHARACTER SET ERROR
505
40-COLUMN CHARACTER SET ERROR
506 COLOR GRAPHICS ERROR
507
640 x 200 GRAPHICS MODE ERROR
508
SCREEN PAGING ERROR
509
LIGHT PEN ERROR
510
COLOR VIDEO ERROR
Diskette drive(s) and controller
601
DISKETTE DRIVE CONTROLLER ERROR
602
SEQUENTIAL SEEK ERROR
603
RANDOM SEEK ERROR
604
WRITE ERROR
605
READ ERROR
606
DISK CHANGE CHECK REMOVE ERROR
607
DISK CHANGE CHECK INSERT ERROR
Math coprocessor
701 COPROCESSOR NOT INSTALLED
702
COPROCESSOR INITIALIZE ERROR
703
COPROCESSOR INVALID OPERATION
MASK ERROR
704
COPROCESSOR ST FIELD ERROR
705
COPROCESSOR COMPARISON ERROR
706 COPROCESSOR ZERO DIVIDE MASK ERROR
707
COPROCESSOR ADDITION ERROR
708
COPROCESSOR SUBTRACTION ERROR
709
COPROCESSOR MULTIPLICATION ERROR
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
C-38 Performing System Diagnostics