13-14 SPARC Enterprise M4000/M5000 Servers Service Manual • December 2010
13.2.1 Accessing the M4000 Server DC-DC Converter
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 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 boards adjacent to the DC-DC converter being replaced.
See Section 11.1.2, “Removing the Memory Board” on page 11-5.
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