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Hardware Maintenance
The power modules of the S7900E series are hot-swappable.
When installing or replacing an in-service power module, pay attention to operations and electrical
safety. Do not touch any naked wire, terminal or any part of the product labeled with a dangerous
voltage to avoid injury.
Required Tools
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ESD-preventive wrist strap
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Screwdriver
Removing and Installing a Power Module
The power module installation and removal procedures described in this section involve the following
two scenarios:
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Power modules are directly installed to/removed from the chassis.
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Power modules are installed to/removed from the chassis with power module adapters.
In the second scenario, you need to install a power module adapter to the chassis first and then install a
power module to the power module adapter. The installation and removal methods in this scenario are
the same as in the first scenario.
The following describes how to install and remove a power module in the first scenario.
