• M7i Router DC Power Supply Specifications on page 87
• M7i DC Power Electrical Safety Guidelines on page 255
• Removing a DC Power Supply on page 171
Related
Documentation
M7i Router DC Power Supply Specifications on page 87•
• M7i DC Power Electrical Safety Guidelines on page 255
• DC Power Electrical Safety Warnings for Juniper Networks Devices on page 256
Replacing an M7i DC Power Cable
On a DC-powered router, the power cables from the external DC power sources connect
to field-wiring terminals on each power supply.
•
Removing an M7I DC Power Cable on page 175
•
Installing an M7i DC Power Cable on page 176
Removing an M7I DC Power Cable
Before removing a DC power cable from an M7i router with only one power supply, you
must power off the router. To remove a DC power cable from the router:
1. Shut off the power flowing from the external power sources, so that the voltage across
the leads of the power cables is 0 V. Ensure that there is no chance that the cable
leads might become active during the procedure.
2. Press the power switch on the power supply faceplate to the OFF (O) position.
NOTE: If you are power cycling the power supply rather than shutting it
off for a time, wait at least 60 seconds after turning it off before turning
it back on. If you need to power it off again, wait for at least 60 seconds
after powering it on.
3. Using a number 1 Phillips screwdriver, turn the screw on each field-wiring terminal
counter-clockwise to loosen the terminal connector from around the cable lug.
4. Remove the DC cables from the terminal connectors and from the hook located on
the faceplate to the right of the field-wiring terminals.
5. Verify that the removed DC cables are not touching or blocking access to any router
components.
See Also DC Power Electrical Safety Warnings for Juniper Networks Devices on page 256•
175Copyright © 2019, Juniper Networks, Inc.
Chapter 25: Replacing Power System Components
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