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13-12 SPARC Enterprise M4000/M5000 Servers Service Manual • August 2009
13.2 DC-DC Converter Replacement
The DC-DC converters are cold replacement components. This means the entire
server must be powered off and the power cords disconnected to replace a DC-DC
converter.
FIGURE 13-5 shows the location of the DC-DC converter on the SPARC Enterprise
M4000
server.
FIGURE 13-5 SPARC Enterprise M4000 DC-DC Converter Location
Location Number Component
1 DC-DC Converter (DDC_B#0) (with metal heatsink)
2 DC-DC Converter (DDC_A#0)
3 DC-DC Converter (DDC_A#1)
1
2
3