Huawei LUNA2000-200KWH-2H1 - 9.1.4 SACU Installation Check

d. Turn o AC switch 1FCB1 of the CMU adapter power supply.
Procedure
Step 1 Disconnect cables from the CMU and label the cables.
Step 2 Remove the faulty I/O expansion board.
Figure 25-2 Removing the I/O expansion board
Step 3 Install a new I/O expansion board.
Figure 25-3 Installing an I/O expansion board
Step 4 Reinstall the cables.
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LUNA2000-200KWH-2H1 Smart String ESS
Maintenance Manual 25 Replacing an I/O Expansion Board
Issue 02 (2023-02-28) Copyright © Huawei Digital Power Technologies Co., Ltd. 148