Specifications

Step 2010-13
Replace the following:
1. Backplane
2. Disk drive with the second LED flashing
Go to ″MAP 410: Repair Checkout″ in
Diagnostic Information for Multiple Bus Systems
to verify the repair.
MAP 2323: SSA hot-swap disk drive Intermittent Link Verification
This MAP helps you isolate FRUs that are causing an intermittent SSA link problem.
You are here because you have an SRN from the series 21xxx through 29xxx, or you
have SRN 33xx.
If you are not familiar with the SSA link, go to “SSA Loops and Links” on page 422.
Attention: Unless the system needs to be switched off for some other reason,
do not
turn off the system when servicing the SSA loop.
Step 2323-1
1. Run the Link Verification service aid to the SSA adapter for which the error has
been logged. A list of pdisks is displayed.
Note: On the Link Verification screen, each adapter port is identified by the number
of its related connector on the adapter card, as follows:
v Adapter port 0 is identified as A1
v Adapter port 1 is identified as A2
v Adapter port 2 is identified as B1
v Adapter port 3 is identified as B2
SRNs 21xxx through 29xxx and SRN 33xxx include the adapter port number
(0-3).
2. Go to “Step 2323-2”.
Step 2323-2
1. Observe the SRN that sent you to this MAP. The last three characters are in the
format
PAA , where P is the number of the SSA adapter port, and AA is the SAA
address of the device.
Note the value of
PAA in the SRN. For example:
v If the SRN is 24002,
PAA = 002.
v If the SRN is 24104,
PAA = 104.
2. Observe the Link Verification screen, and identify the physical device that is
represented by
PAA in the SRN. This device is the first of the two devices that are
connected by the failing link.
If the SRN is in the series 21xxx through 29xxx, the second device of two is located
at PAA -1.
Chapter 3. Maintenance Analysis Procedures 75