IBM pSeries 690 Service Manual page 234

Step 152b-20
Did the system stop with the same error code as recorded in "Step 152b-1" on page 212?
Yes The book just reinserted is defective. Replace it. 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 152b-21".
Step 152b-21
Have all the books listed in "Step 152b-14" on page 213 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 152b-18" on page 213.
Step 152b-22
Turn off the power.
Examine the amber logic-power LEDs of all installed processor subsystem DCAs.
Step 152b-23
Are all amber logic-power LEDs of all installed processor subsystem DCAs off?
Yes Go to "Step 152b-24".
No Call for support.
Step 152b-24
Pull out the following books about 25 mm (1 inch), if present:
v Secondary I/O book, at location U1.18-P1-H3
v Third I/O book, at location U1.18-P1-H4
v Fourth I/O book, at location U1.18-P1-H1
v Capacitor book, at location U1.18-P1-V3
v Capacitor book, at location U1.18-P1-V7
Step 152b-25
Turn on the power.
Step 152b-26
Did the system stop with the same error code as recorded in "Step 152b-1" on page 212?
Yes Go to "Step 152b-32" on page 215.
No Go to "Step 152b-27" on page 215.
214 Eserver pSeries 690 Service Guide