Appendix B
Components
B-27
B.16
Power Supply Unit
The power supply unit (PSU) receives AC 200 to 240 V, and supplies each unit of the server
with DC 48 V and 12 VL. When all CMUs and IOUs are mounted without the dual power
feed option, nine units for the M8000, 15 units for the M9000 (base cabinet only) and 30
units for the M9000 (with expansion cabinet) will be mounted. The number of mounted units
also vary with the system configuration.
The PSU is shown in
.
FIGURE B-19
Power Supply Unit (PSU)
The PSU has the following characteristics.
■
Because PSUs are normally operating in redundancy, active maintenance of a failed PSU
during system operation is possible.
■
The internal power factor correction (PFC) circuit secures the stable output and
suppresses the harmonic current that adversely affects the environment.
■
The current balancing function enables the concurrent operation of a large number of
PSUs, allowing the redundant configurations.
■
The PSU has a label bearing the printed component number and manufacture's serial
number.
Summary of Contents for SPARC Enterprise M8000
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Page 15: ...Contents xv Index Index 1 ...
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Page 27: ...Chapter 1 Safety and Tools 1 5 M9000 Server Front View ...
Page 29: ...Chapter 1 Safety and Tools 1 7 Power Supply Unit PSU ...
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Page 205: ...Chapter 7 I O Unit IOU Replacement 7 13 FIGURE 7 8 Removing the IOU Front of M9000 1 1 2 3 ...
Page 227: ...Chapter 8 FAN Unit Replacement 8 11 FIGURE 8 9 Removing the FAN Unit Rear of M8000 1 2 ...
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Page 409: ...Chapter 20 Backplane Replacement 20 29 FIGURE 20 16 Removing the FANBP Rear of the M8000 ...
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Page 439: ...Chapter 23 Switch Backplane Replacement 23 7 FIGURE 23 4 Removing the SWBP Rear of the M8000 ...
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