Juniper CBL-M40-PWR-AU ユーザーズマニュアル
Replace a DC Power Supply
M40 Internet Router Hardware Guide
142
Remove a DC Power Supply
The DC power supplies are located at the bottom rear of the chassis (see Figure 2). Each DC
power supply weighs approximately 20 lb (9 kg).
power supply weighs approximately 20 lb (9 kg).
To remove a DC power supply, follow this procedure:
1.
Turn off the power flowing from the DC power source to the power supply. Ensure that
the voltage across the leads of the DC power cables that you are disconnecting is 0 V and
that there is no chance that the cable leads might become active during removal.
the voltage across the leads of the DC power cables that you are disconnecting is 0 V and
that there is no chance that the cable leads might become active during removal.
2.
Attach an ESD strap to your bare wrist and connect the strap to one of the ESD points on
the chassis.
the chassis.
3.
Flip the power switch on the power supply faceplate to the OFF (O) position. See
Figure 55
Figure 55
Figure 55: Flip the Power Switch on a DC Power Supply to the OFF Position
Do not leave a power supply slot empty for more than a
short time while the router is operational. The power
supply must remain in the chassis for proper airflow.
short time while the router is operational. The power
supply must remain in the chassis for proper airflow.
If you are not removing the power supply, but simply
powering it off, wait at least 60 seconds before turning it
back on. If you need to power it off again, wait for at least
60 seconds after powering it on.
powering it off, wait at least 60 seconds before turning it
back on. If you need to power it off again, wait for at least
60 seconds after powering it on.
.
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Power switch