System Power - Sun Microsystems Sun Fire E25K Service Manual

3
C H A P T E R

System Power

The Sun Fire E25K/E20K systems have two power modules, each holding three hot-
swappable power supplies. One module is on the front of the system and the other
module is on the rear of the system. This chapter contains the replacement
procedures for the power modules and the 4 kW dual AC–DC power supplies.
This chapter contains the following sections:
Section 3.1, "Power Module Replacement Procedures" on page 3-2
I
I
I
I
I
I
Section 3.2, "4 kW Dual AC–DC Power Supply Replacement Procedures" on
I
page 3-8
I
I
For your protection, also observe the following safety precautions when setting up
your equipment:
Follow all cautions and instructions marked on the equipment.
I
Always use proper ESD equipment and procedures when handling boards and
I
components.
Never push objects of any kind through openings in the equipment as they might
I
touch dangerous voltage points or short out components that can result in fire or
electric shock.
Refer servicing of equipment to qualified personnel.
I
Section 3.1.1, "Power Module Replacement" on page 3-2
Section 3.1.2, "Powering Off for Power Module Removal" on page 3-2
Section 3.1.3, "Removing a Power Module" on page 3-4
Section 3.1.4, "Installing a Power Module" on page 3-6
Section 3.1.5, "Powering On After Power Module Installation" on page 3-7
Section 3.2.1, "4 kW Dual AC–DC Power Supply LEDs" on page 3-9
Section 3.2.2, "4 kW Dual AC–DC Power Supply Replacement" on page 3-10
3-1