test requires fully written media to be installed in the device being tested. Partially written media will result in a read error at the end of data. If only blank media is available, use the SCSI Tape Write Test to write a test pattern onto the blank media.

To run the SCSI Tape Read Test, complete the following steps:

1.From the main menu, select SCSI, and press Enter.

2.Select SCSI Tape Read Test, and press Enter. A default parameter screen appears:

Select SCSI Disk

Overall % Parameters 100

SCSI Disk 0

CONTINUE

Parameter

overall %

Common:

SCSI Tape n

Description

Specifies drivewise % as set for each drive.

Use the term % to specify all drives

Specify an individual drive parameter.

The following screen appears when you specify an individual drive:

SCSI Tape Read Test

 

Test Tape 0

: YES

 

Start Block

:

000000000

 

End Block

:

002028000

 

CONTINUE

 

 

 

 

 

 

A prompt for the percentage of the drive to be tested appears.

3.Specify the percentage of the drive to be tested, select CONTINUE, and press Enter.

If the tape is not positioned at the beginning of the starting block, a tape rewind command is issued before the test begins.

v SCSI Tape Rewind Test

Use this test to make sure that the SCSI tape drive can rewind a tape. To run the SCSI tape rewind test, complete the following steps.

Note: A fully written tape must be installed to run this test.

1.From the main menu, select SCSI, and press Enter.

2.Select SCSI Tape Rewind Test, and press Enter.

vSCSI Tape Write Test

Use this test to verify the ability of the SCSI tape drive to write data correctly to a tape. Use a tape that you know is good for this test. This test is normally hidden from view because it erases the data on the tape. Select the tape drives to be tested, and run the test.

Attention: This test erases all data on the disk.

Video diagnostic tests

Select this choice to run diagnostic tests on the display and the video controller.

Chapter 3. Diagnostics 51

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IBM 8688 manual Video diagnostic tests, Scsi Tape Rewind Test, Scsi Tape Write Test, Parameter