Oracle SPARC Enterprise M4000, Installation And Service Manual

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Chapter 2 Installing the External I/O Expansion Unit in a Rack 2-13
2.5 Installing the AC Cords
1. Use an antistatic strap for this procedure.
2. Attach an AC cord to an internal AC cable at the rear of the External I/O
Expansion Unit, then connect the AC cord to an AC outlet.
■
The PSUs should be connected to two independent external AC power sources so
that service will not be interrupted if one AC power source fails.
■
For the type A cable plate (
FIGURE 2-8
), route each AC cord along the nearest side
of the rack.
■
For the type B cable plate (
FIGURE 2-9
), route the left AC cord over the top of the
cable plate to the right side of the rack. Place the connector of the left AC internal
cable in the rectangular opening in the top of the type B cable plate to save space.
See
FIGURE 2-12
.
Note –
If the PSU1 power cable does not reach the rack power distribution unit,
route the cable on left side of the rack.
Note – Do not connect the internal AC cable directly to an AC socket (power
distribution unit or power strip). You must use the AC cords supplied with the
External I/O Expansion Unit.
3. Attach an AC cord to the remaining internal AC cable as in Step 2 .
Note – The fan might turn on when you insert a power supply into the External I/O
Expansion Unit. This is normal behavior if you are replacing a PSU while the other
PSU is powered up.