11-10 SPARC Enterprise M4000/M5000 Servers Service Manual • December 2010
11.2.3 Installing Memory:
■ Only half or fully populated memory boards may be installed.
■ In Uni-XSB mode, 1, 2 or 4 memory boards can be installed per PSB, all must have
the same capacity. (3 memory boards is not allowed).
■ In Quad-XSB mode, each CPU module must have 1 half populated memory board
or 1 fully populated memory board; capacity can be different.
11.2.4 Accessing the DIMMs
Caution – There is an electrical hazard if the power cords are not disconnected. All
power cords must be disconnected to completely remove power from the server.
1. Power off the server.
This step includes turning the key switch to the Service position, confirming that
the POWER LED is off, and disconnecting power cables. See Section 4.4.1,
“Powering the Server Off Using Software” on page 4-12.
Caution – To prevent the equipment rack from tipping over, you must deploy the
antitilt feature, if applicable, before you slide the server out of the equipment rack.
Note – When drawing out the SPARC Enterprise M4000/M5000 Server to the front,
release the cable tie holding the PCI cables on the rear of the server.
2. Remove the top cover.
This step includes deploying the rack’s antitilt features (if applicable), sliding the
server out of the equipment rack, and removing the top cover. See Section 5.2.1,
“Removing the Top Cover” on page 5-5.
Caution – Use proper ESD grounding techniques when handling components. See
Section 1.1, “Safety Precautions” on page 1-1.
3. Remove the memory board from the server.
See Section 11.1.2, “Removing the Memory Board” on page 11-5.
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