Power Centerplane Replacement Procedure - Sun Microsystems Sun Fire E25K Service Manual

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C H A P T E R
Power Centerplane Replacement
Procedure
Power is distributed to all board sets through the power centerplane which is
located beneath the Sun Fireplane interconnect. The power centerplane can be
removed only from the front of the Sun Fire E25K/E20K systems. Access must be
obtained by also removing all boards from the rear. Follow the front and rear
notations in this procedure carefully. This chapter contains the replacement
procedures for the power centerplane.
Note – The Sun Fireplane interconnect assembly overlaps the top of the power
centerplane; therefore, the Sun Fireplane interconnect assembly must be removed
first.
This chapter contains the following sections:
Section 15.1, "Powering Off the System for Power Centerplane Replacement" on
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page 15-2
Section 15.2, "Removing the Power Centerplane" on page 15-3
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Section 15.3, "Installing the Power Centerplane Assembly into the Chassis" on
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page 15-6
Section 15.4, "Powering On the System After Power Centerplane Installation" on
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page 15-9
For your protection, also observe the following safety precautions when setting up
your equipment:
Follow all cautions and instructions marked on the equipment.
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Always use proper ESD equipment and procedures when handling boards and
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components.
Never push objects of any kind through openings in the equipment as they might
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touch dangerous voltage points or short out components that can result in fire or
electric shock.
Refer servicing of equipment to qualified personnel.
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15-1