Fujitsu SPARC ENTERPRISE M8000 Manual de usuario Pagina 483

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Appendix B Components B-37
B.22 DDC
DC-DC converter (DDC_A) supplies DC power to electronic components mounted
on the backplane (BP_A) for M8000. DDC_A receives 48 VDC and 12 VL and
outputs 1.0 VDC, 1.8 VDC, and 3.3 VL.
The DDC_A is shown in
FIGURE B-33.
FIGURE B-33 DC-DC Converter (DDC_A)
DDC_A has the following characteristics.
Because DDC_As are normally operating in redundancy, active maintenance or
hot maintenance of a failed DDC_A during system operation is possible.
The current balancing function enables concurrent redundant operations.
The DDC_A has a label bearing the printed component number and
manufacture's serial number
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