Power Module Replacement Procedures; Power Module Replacement; Powering Off For Power Module Removal - Sun Microsystems Sun Fire E25K Service Manual

3.1

Power Module Replacement Procedures

3.1.1

Power Module Replacement

The Sun Fire E25K/E20K systems have two power modules, each holding three
power supplies. One module is on the front of the system and the other module is
on the rear of the system. See
3.1.2

Powering Off for Power Module Removal

Caution – The power module is NOT a hot-swappable component. This procedure
requires a complete shutdown of the domains and SCs, and disconnection of all AC
power to the system.
There are four ground points on the system cabinet, two at the front top left and top
right, and two at the rear top left and top right.
Caution – The seven (7) power cables and the two (2) control cables MUST BE
REMOVED from the side of the system where the power module is being removed.
1. As a superuser on the domains, systematically shut down all running domains
by typing:
domain_name# shutdown -y -g seconds -i 0
where seconds is the amount of time before shutdown.
2. On the main SC, power off the domain hardware by typing:
sc% poweroff
This command powers off the entire system with the exception of the power
supplies, fans, and the SCs. Refer to poweroff(1M) for more information.
3-2 Sun Fire E25K/E20K Systems Service Manual • April 2004
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FIGURE 3-2