IBM pSeries 690 Service Manual page 820

If an MCM or L3 cache module is reseated or replaced, the plug count for the module must be
incremented by 1. If the plug count exceeds the limit of 10 (reaches 11 or greater), a 450x yyyy or 4B2x
yyyy error with a detail value of CFF0 that identifies an MCM or L3 cache module will be posted in the
service processor error log. The FRU should be replaced during a deferred service call.
If an MCM or L3 cache module is reseated or replaced or installed during an MES upgrade, the plug
count must be set using the MCM/L3 Interposer Plug Count menu. If the plug count information is not
included with the new or replacement module, enter the default value of 7. If the plug count is not
entered, a B1xx 4698 error code, with a detail value of E10B or E10C, will be posted in the service
processor error log.
If the primary I/O book is replaced, the plug counts are retained. However the MCM/L3 Plug Count
menu must be accessed and option 50, Commit the values and write to the VPD, must be executed
so that the plug counts are revalidated. If the counts are not revalidated, a B1xx 4698 error code, with a
detail value of E10B or E10C, will be posted in the service processor error log.
Notes:
1. The plug count will be 0 for those positions in which L3 cache modules and MCMs have never been
installed.
2. If MCM and L3 modules are removed from the system and not replaced, those plug counts are
retained until they are manually changed.
A screen similar to the following will be displayed. In this example, all four MCMs and all 16 L3 modules
are shown.
1. L3_13:7 2. L3_0:7
6. L3_14:7 7. L3_3:7
10. MCM_3:1
12. L3_15:7 13. L3_10:7 14. MCM_1:7
17. L3_12:7 18. L3_9:7
50. Commit the values and write to the VPD
98. Return to Previous Menu
The format of the preceding menu entries is the menu index number followed by the plug count after
the colon. The following table matches the index number with the physical location codes.
Menu Index Number
1. L3_13
2. L3_0
3. MCM_0
4. L3_1
5. L3_4
6. L3_14
7. L3_3
8. L3_2
9. L3_7
10. MCM_3
11. MCM_2
804 Eserver pSeries 690 Service Guide
MCM/L3 Interposer Plug Count Menu
3. MCM_0:7 4. L3_1:7
8. L3_2:7
11. MCM_2:1
15. L3_11:7 16. L3_6:7
19. L3_8:7
5. L3_4:7
9. L3_7:7
20. L3_5:7
Physical Location Code
U1.18-P1-C5
U1.18-P1-C6
U1.18-P1-C1
U1.18-P1-C7
U1.18-P1-C8
U1.18-P1-C9
U1.18-P1-C10
U1.18-P1-C11
U1.18-P1-C12
U1.18-P1-C2
U1.18-P1-C3