H3C CR19000-20, Руководство по установке

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8-10
Replacing a power supply
WARNING!
•
Provide a circuit breaker for each power supply. Before replacing a power supply, turn off the
circuit breaker for it. After the circuit breaker for a power supply is turned off, the IN and OUT
LEDs on the power supply stay red. You can remove the power supply. After you move the power
supply from the router, the INPUT OK LED and OUTPUT OK LED turn off.
•
To avoid bodily injury, do not touch the spinning fan in a power supply when replacing the power
supply.
•
The power supply may be of high temperature. Allow it to cool before touching it.
CAUTION:
Before replacing a power supply, make sure the remaining power supplies can support the normal
operation of the router.
The replacement procedures for the power supplies are the same. The following replaces a
PSR3000B-54AHD power supply.
To replace a power supply:
1. Prepare an antistatic mat to place the removed power supply.
2. Turn off the circuit breaker.
3. Wear an ESD wrist strap. Make sure the wrist strap makes good skin contact and is reliably
grounded.
4. Remove the air filter. As shown in Figure8-10 , press the locking tabs at both sides of the air filter
to remove the air filter from the top hood.
Figure8-10 Removing the air filter
5. Press down the latch on the power supply and pull the power supply slowly out of the slot along
the guide rails, as shown in
Figure8-11 .