SMART Embedded Computing 6806800V18A, Installation And Use Manual

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130 AXP1440-C07 Installation and Use (6806800V18A)
FRU Installation
FRU Installation
6.5 Power Entry Module Installation and Removal
The AXP1440-C07 shelf supports two PEMs. Since the shelf is equipped with a redundant
power distribution system, the removal of a single PEM does not interrupt system
operation. PEMs are accessible from the rear of the shelf. Each PEM has EMI gaskets on
all sides of the module that provide EMI shielding.
The following instructions describe how to replace a PEM. For further information on power
entry modules, refer to
Alarm Display Panel (ADP1440-D) on page 74
.
6.5.1 Tools You Need

Multimeter

Standard #2 Phillips head screwdriver

7/16” torque wrench

Nut driver (torque nut to 5.65 N-m/50.01 in-lbs)

AXP1440 DC Power Installation Kit, PN 6706822A01 (shipped with AXP1440-C07)
6.5.2 Procedure - Remove a PEM
When replacing a PEM, make sure you have a replacement PEM available. Replacement
can take place in under 30 minutes by a qualified service person. PEMs are accessible from
the rear of the shelf.
Read all cautions and warnings and make sure the equipment is properly grounded
by reviewing the procedure in
Grounding the Shelf on page 101
. The PEM has
multiple power sources. This procedure should be followed precisely to make sure
the PEM is isolated from all power sources before removing the PEM from the shelf,
or removing the plastic terminal block lug cover.
This procedure assumes that the redundant PEMs are powered on in the shelf.
To turn off the breakers, use a tool (small screwdriver) which can be inserted into
the opening of the protective covers that are assembled over top of these breakers.
When the breaker is turned to the OFF position, the red part of the breaker switch
will be exposed.
If the multimeter indicates there is still power present and power cannot be removed
from the terminals, the entire shelf must be powered down to perform the PEM
replacement.