IBM H Series Installation And Service Manual page 94

Step 1540-24
The Adapter or device is probably defective.
If the supplemental media is for an adapter, replace the FRUs in the following order:
1. Adapter
2. I/O board (See notes on page 2-1)
If the supplemental media is for a device, replace the FRUs in the following order:
1. Device and any associated cables.
2. The adapter the device is attached to.
Repeat this step until the defective FRU is identified or all the FRUs have been
exchanged.
If the symptom did not change and all the FRUs have been exchanged, call your
service support person for assistance.
If the symptom has changed, check for loose cards, cables, and obvious problems. If
you do not find a problem, return to "Step 1540-1" on page 2-38 in this MAP and
follow the instructions for the new symptom.
Go to "Map 0410: Repair Checkout" in the Diagnostic Information for Multiple Bus
Systems.
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RS/6000 Enterprise Server Model H Series Installation and Service Guide