H3C Technologies H3C S5800 Series Switches - Manual (Page 17)

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Step4 Check the LED on the power module. If the LED is steady green
or blinking green, the power cable is successfully connected. If
the LED is off or red, check the installation conditions,
troubleshoot the problems, and try again until the LED is
normal.
Removing the power module
To avoid bodily injury or device damage, follow the steps in Figure 8 to
remove the power module.
Figure 8 Power module removing procedure
Remove the power
cable
Turn off the circuit
breaker
Remove the power
module
Step1 Turn off the circuit breaker of the power cable.
Step2 Put on the ESD-preventive wrist strap, making sure that the strap
makes good skin contact and is well grounded.
Step3 Loosen the cable tie, and take off the power cable. When
removing a DC power cable, squeeze the tabs on the power
cable connector with your thumb and forefinger and then pull
the connector out.