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Chapter 4 FRU Replacement Preparation 4-3
CPU module (CPUM_A) Top Cold replacement
Memory board (MEMB) Top Cold replacement
Motherboard (SPARC Enterprise M4000)
(MBU_A)
Rear Cold replacement
Motherboard DC-DC Converter (SPARC
Enterprise M4000) (DDC_A, DDC_B)
Rear Cold replacement
Motherboard (SPARC Enterprise M5000)
(MBU_B)
Top Cold replacement
Motherboard DC-DC Converter (SPARC
Enterprise M5000) (DDC_A, DDC_B)
Top Cold replacement
eXtended System Control facility unit (XSCFU) Rear Cold replacement
Hard disk drive backplane (HDDBP) Top Cold replacement
CD-RW/DVD-RW backplane Top Cold replacement
Tape drive backplane (TAPEBP) Top Cold replacement
Operator panel (OPNL) Top Cold replacement
* When using active replacement for a PSU, only one power supply unit should be replaced at a time to ensure redundancy.
\ When using active replacement for a 172-mm or 60-mm fan unit, only one fan unit should be replaced at a time to ensure redundancy.
TABLE 4-1
FRU Replacement Information (Continued)
FRU FRU Location/Access Removal Method(s)