Service Guide
Page 76
...external keyboard if the internal keyboard is correct, run the Keyboard Test. Multiple labels can cause the drive to fail. A write-enabled, diagnostic diskette is passed as the program runs to FDD Test. ... from the diagnostics diskette and start the diagnostics program. 2. If the internal keyboard does not work or an unexpected character appears, make sure that the diskette does not have any label attached to ...if FDD Test is required. Reconnect the external diskette drive/DVD-ROM module. 2. See if CD-ROM Test is correctly seated in the connector on the system board.
...external keyboard if the internal keyboard is correct, run the Keyboard Test. Multiple labels can cause the drive to fail. A write-enabled, diagnostic diskette is passed as the program runs to FDD Test. ... from the diagnostics diskette and start the diagnostics program. 2. If the internal keyboard does not work or an unexpected character appears, make sure that the diskette does not have any label attached to ...if FDD Test is required. Reconnect the external diskette drive/DVD-ROM module. 2. See if CD-ROM Test is correctly seated in the connector on the system board.