IBM pSeries 690 Service Manual page 323

Step 1541-22
Turn on the power.
Step 1541-23
Did the system stop with the same error code as recorded in "Step 1541-1" on page 299?
Yes Go to "Step 1541-24".
No The part 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 1541-24
Have all the MCMs and books listed in "Step 1541-21" on page 302 been replaced?
Yes Go to "Step 1541-37" on page 305.
No Go to "Step 1541-19" on page 302.
Step 1541-25
Turn off the power.
Examine the amber logic-power LEDs of all installed processor subsystem DCAs.
Step 1541-26
Are all the amber logic-power LEDs of all installed processor subsystem DCAs off?
Yes Go to "Step 1541-27".
No Call for support.
Step 1541-27
Replace the following books, if present, one at a time:
v First location code item recorded, if any in "Step 1541-1" on page 299.
v Second location code item recorded, if any, in "Step 1541-1" on page 299.
v Third location code item recorded, if any, in "Step 1541-1" on page 299.
v Fourth location code item recorded, if any, in "Step 1541-1" on page 299.
v Fourth I/O book, at location U1.18-P1-H1 if not recorded in "Step 1541-1" on page 299.
v Primary I/O Book at U1.18-P1-H2 if not recorded in "Step 1541-1" on page 299.
v Secondary I/O Book at U1.18-P1-H3 if not recorded in "Step 1541-1" on page 299.
v Third I/O Book at U1.18-P1-H4 if not recorded in "Step 1541-1" on page 299.
v Memory Book 6 at U1.18-P1-M5 if not recorded in "Step 1541-1" on page 299.
v Memory Book 7 at U1.18-P1-M1 if not recorded in "Step 1541-1" on page 299.
Step 1541-28
Turn on the power.
Chapter 3. Maintenance Analysis Procedures
303