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Step 1542-19
1. Turn off the power.
2. Disconnect the I/O subsystem power cables.
3. Replace the following parts, one at a time, in the sequence listed:
a. I/O subsystem backplane of any "looped one", "not looped right", or "not looped left" I/O
subsystem attached to the RIO card of the base system defined in the step that sent you to "Step
1542-9" on page 151.
b. I/O subsystem backplane of any "looped two" I/O subsystem attached to the RIO card of the base
system defined in the step that sent you to "Step 1542-9" on page 151.
c. I/O subsystem backplane of any "looped three" I/O subsystem attached to the RIO card of the
base system defined in the step that sent you to "Step 1542-9" on page 151.
d. I/O subsystem backplane of any "looped four" I/O subsystem attached to the RIO card of the base
system defined in the step that sent you to "Step 1542-9" on page 151.
4. Reconnect the I/O subsystem power cables.
5. Turn on the power.
6. Boot standalone diagnostics from CD.
7. If the Please define the System Console screen is displayed, follow directions to select the system
console.
8. Use the Display Configuration and Resource List to list all attached devices and adapters (refer to the
Eserver pSeries Diagnostic Information for Multiple Bus Systems, order number SA38-0509, if
necessary).
9. Check that all attached devices and adapters are listed.
Did the Please define the System Console screen display and are all attached devices and adapters
listed?
No
Replace the next part in the list and return to the beginning of this step. Continue repeating this
process until a part causes the Please define the System Console screen to be displayed and all
attached devices and adapters to be listed. If you have replaced all the items listed above and the
Please define the System Console screen does not display or all attached devices and adapters
are not listed, check any external devices and cabling. If you do not find a problem, contact your
next level of support for assistance.
Yes
Go to "Step 1542-20" on page 156.
Chapter 3. Maintenance Analysis Procedures
155
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