IBM pSeries 670, Service Manual

Page: 187 / 1032

MAP 152b: 2.5 V Current/Voltage Problem in Processor Subsystem
Step 152b-1
Record the error code and location code(s) that sent you to this MAP.
Step 152b-2
Turn off the power.
Examine the amber logic-power LEDs of all installed processor subsystem DCAs.
Step 152b-3
Are all amber logic-power LEDs of all installed processor subsystem DCAs off?
Yes Go to “Step 152b-4”.
No Call for support.
Step 152b-4
Pull out the following books about 25 mm (1 inch), if present:
v
Memory book 0, at location U1.18-P1-M2
v
Memory book 1, at location U1.18-P1-M3
v
Memory book 2, at location U1.18-P1-M7
v
Memory book 3, at location U1.18-P1-M6
Step 152b-5
Turn on the power.
Step 152b-6
Did the system stop with the same error code as recorded in “Step 152b-1”?
Yes Go to “Step 152b-12” on page 168.
No Go to “Step 152b-7”.
Step 152b-7
One of the books just removed is defective.
1. Turn off the power.
2. Make sure all amber logic-power LEDs of all installed processor subsystem DCAs are off.
Step 152b-8
Reinsert one of the books that is pulled out and listed in step 152b-4.
Step 152b-9
Turn on the power.
Step 152b-10
Did the system stop with the same error code as recorded in “Step 152b-1”?
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-11” on page 168.
Chapter 3. Maintenance Analysis Procedures
167