Juniper Networks MX960 Benutzerhandbuch
Replacing a DC Power Supply
To replace a DC power supply, use the following procedures:
■
■
Removing a DC Power Supply
The power supplies are located at the rear of the chassis. Each DC power supply
weighs approximately 3.8 lb (1.7 kg).
weighs approximately 3.8 lb (1.7 kg).
CAUTION: Do not leave a power supply slot empty for more than 30 minutes while
the router is operational. For proper airflow, the power supply must remain in the
chassis or a blank panel must be used in an empty slot.
the router is operational. For proper airflow, the power supply must remain in the
chassis or a blank panel must be used in an empty slot.
NOTE: After powering off a power supply, wait at least 60 seconds before turning it
back on.
back on.
To remove a DC power supply, follow this procedure:
1.
Make sure that the voltage across the DC power source cable leads is 0 V and
that there is no chance that the cables might become active during the removal
process.
that there is no chance that the cables might become active during the removal
process.
2.
Attach an electrostatic discharge (ESD) grounding strap to your bare wrist and
connect the strap to one of the ESD points on the chassis. For more information
about ESD, see the MX960 Ethernet Services Router Hardware Guide.
connect the strap to one of the ESD points on the chassis. For more information
about ESD, see the MX960 Ethernet Services Router Hardware Guide.
3.
Switch the circuit breaker on the power supply faceplate to the
OFF
position.
4.
Remove the clear plastic cover protecting the terminal studs on the faceplate.
5.
Remove the nuts and washers from the terminal studs (see Figure 2 on page 5).
(Use a 3/8–in. nut driver or pliers.)
(Use a 3/8–in. nut driver or pliers.)
4
■
Replacing a DC Power Supply
MX960 Ethernet Services Router DC Power Supply Installation Instructions