IBM pSeries 670 Service Manual page 224

Step 152g-31
Have all the books listed in "Step 152g-24" on page 203 been reinserted?
Yes The symptom has changed. This ends the procedure.
Return the system to its original configuration.
Go to "MAP 0410: Repair Checkout" in the RS/6000 and Eserver pSeries Diagnostic Information
for Multiple Bus Systems.
No Go to "Step 152g-28" on page 203.
Step 152g-32
Turn off the power.
Examine the amber logic-power LEDs of all installed processor subsystem DCAs.
Step 152g-33
Are all amber logic-power LEDs of all installed processor subsystem DCAs off?
Yes Go to "Step 152g-34".
No Call for support.
Step 152g-34
Replace the book in the following list, if present, one at a time and in the order listed:
v Primary I/O book, at location U1.18-P1-H2
v DCA 1-RH at U1.18-P1-V1
v DCA 2-RH at U1.18-P1-V2
Step 152g-35
Turn on the power.
Step 152g-36
Did the system stop with the same error code as recorded in "Step 152g-1" on page 200?
Yes Go to "Step 152g-37".
No The book just replaced was defective. This ends the procedure.
Return the system to its original configuration.
Go to "MAP 0410: Repair Checkout" in the RS/6000 and Eserver pSeries Diagnostic Information
for Multiple Bus Systems.
Step 152g-37
Turn off the power.
Make sure all amber logic-power LEDs of all installed processor subsystem DCAs are off.
204 Eserver pSeries 670 Service Guide