E-14 Sun Fire X4100/X4100 M2 and X4200/X4200 M2 Servers Service Manual • August 2009
E.10 Motherboard Bus Bar Power Connector
Main power is delivered to the motherboard through a bus bar. There are two pads on
the bottom side of the motherboard that connect +12 V and ground. The pads have
been designed to handle 50 A. The motherboard bus bar connector pads and their
corresponding descriptions are shown in the figure and table in this section.
36 CS3FX_L
37 DASP_L
38 +5V (Motor)
39 +5V (Motor)
40 +5V (Motor)
41 +5V (Logic)
42 +5V (Logic)
43 Ground
44 Ground
45 Ground
46 Ground
47 Dev Config (CSEL)
48 Ground
49 Vendor Unique
50 Vendor Unique
TABLE E-9 Flex Cable DVD-ROM Drive IDE Connector Pinouts (Continued)
Pin Number Signal Name
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