IBM H Series Installation And Service Manual page 107

Step 2010-14
Replace the SSA link cable closest to the flashing LED. Did the LED stop flashing?
NO Go to step "Step 2010-15."
YES Go to MAP 410: Repair Checkout in Diagnostic Information for Multiple
Bus Systems to verify the repair.
Step 2010-15
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.
Chapter 2. Maintenance Analysis Procedures
2-73