IBM pSeries 670 Service Manual page 277

Step 1541-18
Did the system stop with the same error code as recorded in "Step 1541-1" on page 254?
Yes Go to "Step 1541-37" on page 260.
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 1541-19
Turn off the power.
Examine the amber logic-power LEDs of all installed processor subsystem DCAs.
Step 1541-20
Are all the amber logic-power LEDs of all installed processor subsystem DCAs off?
Yes Go to "Step 1541-21".
No Call for support.
Step 1541-21
Attention: Before you remove or replace any MCM or L3 module, stop, read and understand the
following procedures: "MCM Module (Processor) and Pass Through Modules" on page 799 and "L3 Cache
Modules" on page 819.
Attention: MCM and L3 modules have a limit of three plug cycles. Before removing any of the modules
in the following list, call for support.
Replace the following modules or books, if present, one at a time and in the order listed:
v First location code item recorded, if any, "Step 1541-1" on page 254.
v Second location code item recorded, if any, in "Step 1541-1" on page 254.
v Third location code item recorded, if any, in "Step 1541-1" on page 254.
v Fourth location code item recorded, if any, in "Step 1541-1" on page 254.
v Primary I/O book at U1.18-P1-H2.
v L3 module, at location U1.18-P1-C5 if not recorded in "Step 1541-1" on page 254.
v L3 module, at location U1.18-P1-C11 if not recorded in "Step 1541-1" on page 254.
v L3 module, at location U1.18-P1-C14 if not recorded in "Step 1541-1" on page 254.
v L3 module, at location U1.18-P1-C20 if not recorded in "Step 1541-1" on page 254.
v L3 module, at location U1.18-P1-C9 if not recorded in "Step 1541-1" on page 254.
v L3 module, at location U1.18-P1-C10 if not recorded in "Step 1541-1" on page 254.
v L3 module, at location U1.18-P1-C6 if not recorded in "Step 1541-1" on page 254.
v L3 module, at location U1.18-P1-C12 if not recorded in "Step 1541-1" on page 254.
v L3 module, at location U1.18-P1-C13 if not recorded in "Step 1541-1" on page 254.
v L3 module, at location U1.18-P1-C7 if not recorded in "Step 1541-1" on page 254.
v L3 module, at location U1.18-P1-C15 if not recorded in "Step 1541-1" on page 254.
v L3 module, at location U1.18-P1-C16 if not recorded in "Step 1541-1" on page 254.
v L3 module, at location U1.18-P1-C17 if not recorded in "Step 1541-1" on page 254.
v L3 module, at location U1.18-P1-C18 if not recorded in "Step 1541-1" on page 254.
v L3 module, at location U1.18-P1-C19 if not recorded in "Step 1541-1" on page 254.
v L3 module, at location U1.18-P1-C8 if not recorded in "Step 1541-1" on page 254.
v MCM module 0 at U1.18-P1-C1 if not recorded in "Step 1541-1" on page 254.
v MCM module 3 at U1.18-P1-C2 if not recorded in "Step 1541-1" on page 254.
v MCM module 1 at U1.18-P1-C3 if not recorded in "Step 1541-1" on page 254.
v MCM module 2 at U1.18-P1-C4 if not recorded in "Step 1541-1" on page 254.
Chapter 3. Maintenance Analysis Procedures
257