GE HEALTHCARE
DIRECTION FC091194, REVISION 11 VIVID 7 SERVICE MANUAL
Chapter 7 - Diagnostics/Troubleshooting 7 - 55
7-7-2-4 CD/DVD-ROM Drive Tests
• CD-ROM Test (All) - The CD-ROM test examines the CD-ROM drive to make sure it is working
properly. Use a data CD-ROM disc for these tests. You cannot use an audio CD, such as a regular
commercial music CD, with this test.
NOTE: The BEP is sometimes slow in recognizing a newly inserted CD-ROM disc. It is best to wait a
few seconds after inserting a disc into the drive before you run any tests.
There are two types of CD-ROM tests:
1.) Seek Tests: Ensures the drive can access all locations on a disc, and
2.) Read Tests: Ensures the drive can read all the data.
• CD-ROM: Linear Seek - Tests that all locations can be accessed on a CD-ROM disc in a linear
fashion, starting from the first to the last.
• CD-ROM: Random Seek - Tests that all locations can be accessed on a CD-ROM disc randomly.
• CD-ROM: Funnel Seek - Tests that all locations can be accessed on a CD-ROM disc in a funnel
fashion, starting from the first then moving to the last, then, at the next pass starting from the second
location then moving to the next to the last, and so on
• CD-ROM: Linear Read - Reads the data on the CD-ROM in a linear fashion, starting from the start
to the end.
• CD-ROM: Random Read - Reads the data on the CD-ROM randomly.
Figure 7-57 CD-Rom Drive Tests
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