System diagnostics error codes and messages (continued)

Error code

Message

Color graphics adapter and CRT

501 V-RAM ERROR

503ATTRIBUTE ERROR

504CHARACTER SET ERROR

50540-COLUMN CHARACTER SET ERROR

506COLOR GRAPHICS ERROR

507640 x 200 GRAPHICS MODE ERROR

508SCREEN PAGING ERROR

509LIGHT PEN ERROR

510COLOR VIDEO ERROR

Diskette drive(s) and controller

601DISKETTE DRIVE CONTROLLER ERROR

602SEQUENTIAL SEEK ERROR

603RANDOM SEEK ERROR

604WRITE ERROR

605READ ERROR

606DISK CHANGE CHECK REMOVE ERROR

607DISK CHANGE CHECK INSERT ERROR

Math coprocessor

701COPROCESSOR NOT INSTALLED

702COPROCESSOR INITIALIZE ERROR

703COPROCESSOR INVALID OPERATION MASK ERROR

704COPROCESSOR ST FIELD ERROR

705COPROCESSOR COMPARISON ERROR

706COPROCESSOR ZERO DIVIDE MASK ERROR

707COPROCESSOR ADDITION ERROR

708COPROCESSOR SUBTRACTION ERROR

709COPROCESSOR MULTIPLICATION ERROR

710COPROCESSOR 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