Maintenance 5-231
Installing and Replacing Power Supplies
Step 3 For the AC-input power supply, lift up the cable retention clip and remove the power cable
from the AC receptacle.
For the DC-input power supply, loosen the captive installation screws on the terminal block
cover, lift the cover, remove the nylon ties (used for strain relief), and then remove the three
power leads from the terminal block. (See Figure 5-24.)
Figure 5-24 Removing Nylon Cable Ties and Power Leads from DC-Input Power Supply
Step 4
Use a screwdriver to loosen and remove the captive installation screw on the top of the
supply. (See Figure 5-25.)
Step 5 Grasp the power supply handle and place your other hand underneath to support the bottom
of the supply as shown in Figure 5-26.
Step 6 Pull the supply out of the bay and put it aside.
Step 7 If the power supply bay is to remain empty, install a power-supply filler plate
(MAS-7KBLANK) over the opening and secure it with a mounting screw. This not only
protects the inner chassis from dust, but also protects the connectors in the rear of the bay,
which expose current levels when the chassis is powered ON.
OUT FAIL
INPUT POWER
DO NOT SHIP WITH POWER SUPPLY
INSTALLED
FASTENER TO BE FULLY ENGAGED
BEFORE OPERATING POWER SUPPLY
INPUT VOLTAGE : 40-72 V=
INPUT CURRENT : 24-13A
Captive installation
screw
Power leads attached
to terminal block
( ) negative
( ) positive
( ) ground
2530
Nylon ties on cable
and metal bracket
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