FusionModule5000 Smart Modular Data Center
Maintenance Guide (ECC800)
Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
Before replacement, turn off the upstream switch along the corresponding new main way, and
turn off all downstream switches of the power distribution units.
Procedure
Step 1 Disconnect the power distribution unit and downstream switches along the new main way of
the faulty general input unit.
Step 2 Turn off the switch of the general input unit.
Step 3 Open the upstream PDC of the new main way, and turn off the output switch in the PDC.
Step 4 Remove the power distribution units on the busbar trunking unit of the general input unit by
referring to 5.1.3.1 Replacing the Power Distribution Unit.
Step 5 Remove the general input unit panel.
Figure 5-26 Removing the general input unit panel
Step 6 Open the general input unit shell, test the copper busbar inside the general input unit using an
electroprobe, and go to the next step if the busbar is not energized.
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