Parallel Port Check

Next, the computer checks its parallel port. If an error is found, you see this message:

901-Parallel port error

Serial Port Check

The computer then checks its serial port. If an error is found, you see this message:

1101-Serial port error

Diskette Drive Seek Check

The computer checks its diskette drives by searching the read/write heads for any malfunction. If any seek errors are found, you see one of these messages:

601-Diskette error

602-Diskette error

If this error occurs, confirm that the system diskette is inserted into drive A. If the message still appears after you insert the diskette, you may then want to run the floppy disk drive and controller check using the system diagnostics program on the Reference diskette (see Appendix D). If the error persists, consult your dealer about having the drive repaired.

Hard Disk Controller and Hard Disk Check

The computer next checks the hard disk controller and drive unit. If a malfunction is found in the hard disk controller, you see one of these error messages:

1701-Disk error

1790-Disk error

Power-On Diagnostics

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