IBM RS/6000 44P Series 270, Service Manual

Page: 86 / 346

Step 1540-23
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 note 4 on page 27).
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 service
support 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 51 for the new symptom.
Go to "MAP 410: Repair Checkout" in the RS/6000 and
Eserver
pSeries Diagnostics
Information for Multiple Bus Systems .
Step 1540-24
1. Ensure that the diagnostics and the operating system are shut down.
2. Turn off the power.
3. If you have not already done so, configure the service processor with the
instructions from Note 6 in “MAP 1540: Minimum Configuration” on page 50 and
then return here and continue.
4. Exit service processor menus and remove the power cable.
5. Remove the side cover.
6. Record the slot numbers of the PCI adapters. Label and record the location of any
cables attached to the adapters. Disconnect any cables attached to the adapters
and remove all the adapters.
7. Plug the power cable into a power outlet (and wait for OK on the operator panel
display).
8. Turn on the power.
Does the system stop with code 4B2xxx00 or 4B2xxx10 displayed on the operator
panel?
NO Go to “Step 1540-26” on page 69.
YES Go to “Step 1540-25” on page 69.
68
Service Guide