Huawei New Main Way 2.0 User Manual page 70

New Main Way 2.0
User Manual
Procedure
Step 1 Turn off the input switch and upstream power distribution switch of the general
input unit, and make a warning sign.
Step 2 Remove the communications cable and the DC power cable and mark the
installation positions.
Step 3 Remove the protective covers and use a multimeter to check that the input
terminal is not energized.
Figure 8-16 Removing the input protective covers
Step 4 Remove the fuse from the monitoring board.
Figure 8-17 Removing the fuse from the monitoring board
(1) Fuse holder
Step 5 Remove cables from the monitoring board and mark the installation positions.
Step 6 Wear an ESD wrist strap, remove the monitoring board, and take ESD protection
measures.
Issue 05 (2020-10-15) Copyright © Huawei Technologies Co., Ltd.
8 Parts Replacement
64