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Maintenance
Changing Fuse
Available only at the main power socket.
A fuse is attached to each device. If a fuse rupture is detected, it must be changed by appropriately
trained people.
If the fuse of the main power supply needs to be changed, please pull out the fuse cover and change
the fuse, then push the cover back.
The following are the steps to change the fuse of the backup power supply:
1． Pull out the fuse plug underneath the AC power socket.
2． Exchange the fuse.
3． Replace the fuse plug.
Upgrading Device Firmware
If device firmware needs to be upgraded, the task must only be performed by appropriately trained
people. Before upgrading, please ensure compatibility between the new firmware and other devices
to ensure the system continues to work normally.
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