T5120加内存后开不了机

一台T5120,原来是4G内存，加了4根1G的内存，按照面板上的提示，插好内存后就开不了机，logs如下
Wed Oct  6 05:14:19 2010  Chassis   Log       major   
       Oct  6 05:14:19 ERROR: System unusable, insufficient number of valid MCUs
       . MCU0/MCU1 or MCU2/MCU3 must be usable
409    Wed Oct  6 05:14:19 2010  Chassis   Log       major   
       Oct  6 05:14:19 ERROR: MB/CMP0/L2_BANK6, MB/CMP0/L2_BANK7 unused because
       MB/CMP0/MCU3 is not configured
408    Wed Oct  6 05:14:19 2010  Chassis   Log       major   
       Oct  6 05:14:19 ERROR: MB/CMP0/L2_BANK4, MB/CMP0/L2_BANK5 unused because
       MB/CMP0/MCU2 is not configured
407    Wed Oct  6 05:14:19 2010  Chassis   Log       major   
       Oct  6 05:14:19 ERROR: MB/CMP0/L2_BANK2, MB/CMP0/L2_BANK3 unused because
       MB/CMP0/MCU1 is not configured
406    Wed Oct  6 05:14:19 2010  Chassis   Log       major   
       Oct  6 05:14:19 ERROR: MB/CMP0/L2_BANK0, MB/CMP0/L2_BANK1 unused because
       MB/CMP0/MCU0 is not configured
405    Wed Oct  6 05:14:19 2010  Chassis   Log       major   
       Oct  6 05:14:19 ERROR: MB/CMP0/BR3: DIMMs are not compatible, MB/CMP0/MCU
       3 not configured
404    Wed Oct  6 05:14:18 2010  Chassis   Log       major   
       Oct  6 05:14:18 ERROR: MB/CMP0/BR2: DIMMs are not compatible, MB/CMP0/MCU
       2 not configured
403    Wed Oct  6 05:14:17 2010  Chassis   Log       major   
       Oct  6 05:14:17 ERROR: MB/CMP0/BR1: DIMMs are not compatible, MB/CMP0/MCU
       1 not configured
402    Wed Oct  6 05:14:16 2010  Chassis   Log       major   
       Oct  6 05:14:16 ERROR: MB/CMP0/BR0: DIMMs are not compatible, MB/CMP0/MCU
       0 not configured

提示MCU is not configured ，以前没接触过ilom，请问应该怎样解决，先谢谢大家

Four, eight, and sixteen FBDIMM configurations of the same FBDIMM are supported.
All FBDIMM's in a Branch must have the same Sun part number.
All FBDIMM's in the server must be the same capacity.
The minimum requirement is four FBDIMMs in the Channel 0, DIMM 0 slots.

手册上有如何扩内存