IBM RS/6000 Enterprise Server M80 Service Manual page 144

Step 1540-25
1. Turn off the power.
2. Disconnect the I/O drawer ac power cables (dc power cables in a dc-powered system).
3. Replace the following parts, one at a time, in the sequence listed:
a. Boot device SCSI cable
b. Boot device
c. I/O drawer backplane
d. I/O drawer RIO adapter
e. I/O drawer operator panel
f. SPCN fan control card
g. Both power supplies
h. Power distribution card
4. Reconnect the I/O drawer ac power cables (dc power cables in a dc-powered system).
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
RS/6000 and Eserver pSeries Diagnostic Information for Multiple Bus Systems 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 Replacel 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 1540-26" on page 127.
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Service Guide