78 Chapter 4System Check ProceduresExternal Diskette Drive CheckDo the following to isolate the problem to a controller, driver, or diskette. A write-enabled, diagnostic diskette isrequired.NOTE: Make sure that the diskette does not have more than one label attached to it. Multiple labels can causedamage to the drive or cause the drive to fail.Do the following to select the test device. See “Running PQA Diagnostics Program” on page 50 for details.1. Boot from the diagnostics diskette and start the PQA program (See “Running PQA Diagnostics Program”on page 50).2. Go to the diagnostic Diskette Drive in the test items.3. Press F2 in the test items.4. Follow the instructions in the message window.If an error occurs with the internal diskette drive, reconnect the diskette connector on the main board.If the error still remains:1. Reconnect the external diskette drive/CD-ROM module.2. Replace the external diskette drive/CD-ROM module.3. Replace the main board.External CD/DVD-ROM Drive CheckDo the following to isolate the problem to a controller, drive, or CD/DVD-ROM. Make sure that the CD/DVD-ROM does not have any label attached to it. The label can cause damage to the drive or can cause the driveto fail.Do the following to select the test device:1. Boot from the diagnostics diskette and start the PQA program (refer to “Running PQA DiagnosticsProgram” on page 50.2. Go to the diagnostic CD/DVD-ROM in the test items.3. Press F2 in the test items.4. Follow the instructions in the message window.If an error occurs, reconnect the connector on the main board. If the error still remains:1. Reconnect the external diskette drive/CD/DVD-ROM module.2. Replace the external diskette drive/CD/DVD-ROM module.3. Replace the main board.