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Service Aid
If service aids are available, you can use the Link Verification service aid to show that
the SSA loop is broken.
This example screen shows a break in the SSA loop between the pdisk0 and pdisk10.
In the condition shown by the display, the Ready lights on the pdisk0 and pdisk10 are
both flashing.
To help locate these disk drives, select the pdisk, and press Enter. The Check light on
the selected disk drive flashes. This action does not affect the customer's operations.
For more information about the service aids, see Chapter 17, "SSA Service Aids" on
page 373.
Repair Actions
When you have determined the parts of the failing link, check whether the cause of the
problem is obvious; for example, a loose cable connection, or a disk drive with its
Check light on. If the cause is obvious, correct it. If the cause is not obvious, exchange
the parts of the link, one at a time, until the problem is solved.
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User's Guide and Maintenance Information
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