Huawei FusionModule5000 Maintenance Manual page 131

FusionModule5000 Smart Modular Data Center
Maintenance Guide (ECC800)
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
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.
Issue 01 (2019-03-05)
5.1.3.1 Replacing the Power Distribution
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5 Parts Replacement
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