Juniper EX9214 Hardware Manual page 196

• You have installed the required number of power supplies to support redundant operation for the
switch configuration.
• Ensure you understand how to prevent electrostatic discharge (ESD) damage. See
Electrostatic Discharge Damage
Ensure that you have the following parts and tools available:
• An ESD wrist strap
• An external management device such as a PC
• A cable to connect the external management device to the console (CONSOLE) port or the Ethernet
management (<...>) port on the primary Routing Engine module (RE module).
For connecting a management device to the console port, see
Management Console or an Auxiliary Device
management port, see
To power on the switch:
1. Connect the external management device to the primary RE module's Ethernet management (<...>)
port.
2. Turn on the power to the external management device.
3. Wrap and fasten one end of the ESD wrist strap around your bare wrist, and connect the other end
of the strap to the ESD point on the switch.
4. Verify that the power supplies are fully inserted in the chassis and that each of their handles is flush
against the faceplate.
5. Verify that the source power cables are connected to the appropriate terminal: the positive (+)
source cable to the return terminal (labeled RTN) and the negative (–) source cable to the input
terminal (labeled –48V).
6. Switch on the dedicated customer site circuit breakers to provide power to the DC power cables.
7. Check the INPUT OK LED is lit steadily green to verify that power is present.
8. If power is not present:
• Verify that the fuse is installed correctly and turn on the breaker at the battery distribution fuse
board or fuse bay.
• Check the voltage with a meter at the terminals of the power supply for correct voltage level
and polarity.
9. On each of the DC power supplies, switch the DC circuit breaker to the center position before
moving it to the On (—) position.
.
. For connecting a management device to the
Connecting an EX9200 Switch to a Network for Out-of-Band Management
Prevention of
Connecting an EX9200 Switch to a
185
.