Map 1543: Mcm Module Problem Isolation - IBM pSeries 690 Service Manual

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MAP 1543: MCM Module Problem Isolation

Record the error code and the location code(s) that sent you to this MAP.

Turn off the power.

Examine the amber logic-power LEDs of all installed processor subsystem DCAs.

Are all amber logic-power LEDs of all installed processor subsystem DCAs off?

Go to "Step 1543-4."

Call for support.

Some of the parts in the following list are modules that have a limit of three plug cycles.

Before replacing any of the modules in the following list, call for support.

You may be asked to replace one or more of the following cards and modules:

v Passthru module at U1.18-P1-C2

v Passthru module at U1.18-P1-C3

v MCM module 0 at U1.18-P1-C1

v MCM module 2 at U1.18-P1-C4

v MCM module 1 at U1.18-P1-C3

v MCM module 3 at U1.18-P1-C2

v System clock card, at location U1.18-P1-X5

Replace the following books and modules, if present, one at a time:

1. Passthru module at U1.18-P1-C2 if not recorded in "Step 1543-1."

2. Passthru module at U1.18-P1-C3 if not recorded in "Step 1543-1."

3. System clock card, at location U1.18-P1-X5 if not recorded in "Step 1543-1."

4. First location code item recorded, if any, in "Step 1543-1."

5. Second location code item recorded, if any, in "Step 1543-1."

6. Third location code item recorded, if any, in "Step 1543-1."

7. Fourth location code item recorded, if any, in "Step 1543-1."

8. MCM module 0 at U1.18-P1-C1 if not recorded in "Step 1543-1."

9. MCM module 2 at U1.18-P1-C4 if not recorded in "Step 1543-1."

10. MCM module 1 at U1.18-P1-C3 if not recorded in "Step 1543-1."

11. MCM module 3 at U1.18-P1-C2 if not recorded in "Step 1543-1."

Turn on the power.

Chapter 3. Maintenance Analysis Procedures