IBM RS/6000 H50, Installation And Service Manual

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Step 2010-6
Are all LED's on the drives in a 6 pack off?
NO Go to step “Step 2010-9.”
YES Go to “Step 2010-7.”
Step 2010-7
Are any power cables loose or in need of replacement?
NO Go to “Step 2010-8.”
YES Fix or replace the power cables as required. Go to "MAP 410: Repair
Checkout" in
Diagnostic Information for Multiple Bus Systems to verify the
repair.
Step 2010-8
Replace the backplane. Go to "MAP 410: Repair Checkout" in
Diagnostic Informa-
tion for Multiple Bus Systems to verify the repair.
Step 2010-9
Is there only one drive with no LED's on?
NO Go to step “Step 2010-10” on page 2-49.
YES Replace the the following FRU's:
1. Backplane
2. Disk drive assembly
Go to "MAP 410: Repair Checkout" in Diagnostic Information for Multiple
Bus Systems to verify the repair.
2-48
RS/6000 Enterprise Server Model H50 Installation and Service Guide