IBM pSeries 690 Service Manual page 324

Step 1541-29
Did the system stop with the same error code as recorded in "Step 1541-1" on page 299?
Yes Go to "Step 1541-30".
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 1541-30
Have all the books listed in "Step 1541-27" on page 303 been replaced?
Yes Go to "Step 1541-37" on page 305.
No Go to "Step 1541-25" on page 303.
Step 1541-31
Turn off the power.
Examine the amber logic-power LEDs of all installed processor subsystem DCAs.
Step 1541-32
Are all the amber logic-power LEDs of all installed processor subsystem DCAs off?
Yes Go to "Step 1541-33".
No Call for support.
Step 1541-33
Replace the following books, if present, one at a time:
v First location code item recorded 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 Primary I/O book at U1.18-P1-H2.
v Memory book 0 at U1.18-P1-M2 if not recorded in "Step 1541-1" on page 299.
v Memory book 1 at U1.18-P1-M3 if not recorded in "Step 1541-1" on page 299.
v Memory book 2 at U1.18-P1-M7 if not recorded in "Step 1541-1" on page 299.
v Memory book 3 at U1.18-P1-M6 if not recorded in "Step 1541-1" on page 299.
v Memory book 4 at U1.18-P1-M4 if not recorded in "Step 1541-1" on page 299.
v Memory book 5 at U1.18-P1-M8 if not recorded in "Step 1541-1" on page 299
Step 1541-34
Turn on the power.
Step 1541-35
Did the system stop with the same error code as recorded in "Step 1541-1" on page 299?
Yes Go to "Step 1541-36" on page 305.
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.
304 Eserver pSeries 690 Service Guide