IBM pSeries 690 Service Manual page 362

Step 1549-19
Did the system stop with the same error code as recorded in "Step 1549-1" on page 338?
No The book or module 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.
Yes Go to "Step 1549-20".
Step 1549-20
Have all the books or modules listed in "Step 1549-17" on page 341 been replaced?
No Go to "Step 1549-2" on page 338.
Yes Go to "Step 1549-37" on page 344.
Step 1549-21
Replace the following books and modules, if present, one at a time:
v First location code item recorded, if any, in "Step 1549-1" on page 338.
v Second location code item recorded, if any, in "Step 1549-1" on page 338.
v Third location code item recorded, if any, in "Step 1549-1" on page 338.
v Memory book 4 at U1.18-P1-M4 if not recorded in "Step 1549-1" on page 338.
v Memory book 5 at U1.18-P1-M8 if not recorded in "Step 1549-1" on page 338.
v Primary I/O Book at U1.18-P1-H2 if not recorded in "Step 1549-1" on page 338.
Step 1549-22
Turn on the power.
Step 1549-23
Did the system stop with the same error code as recorded in "Step 1549-1" on page 338?
No The book or module 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.
Yes Go to "Step 1549-24".
Step 1549-24
Have all the books or modules listed in "Step 1549-21" been replaced?
No Go to "Step 1549-2" on page 338.
Yes Go to "Step 1549-37" on page 344.
342 Eserver pSeries 690 Service Guide