cables to the router. Remove components from the chassis, first from the rear and then
from the front.
•
Removing the Power Supplies on page 130
•
Removing FEBs on page 131
•
Removing CBs on page 132
•
Removing a Fan Tray on page 133
•
Removing the Cable Management System on page 135
•
Removing FPCs on page 136
•
Removing a CFPC on page 137
Removing the Power Supplies
The power supplies are located vertically at the rear of the chassis to the right of CB1.
Each power supply weighs approximately 8.4 lb (3.8 kg).
Remove the left power supply first and then the right power supply. To remove the AC
or DC power supplies:
1. Attach an electrostatic discharge (ESD) grounding strap to your bare wrist, and connect
the strap to an approved site ESD grounding point. See the instructions for your site.
2. Switch the circuit breaker on a DC power supply faceplate to the off position (O). For
an AC power supply, switch the power switch to the standby position. We recommend
this even though the power supplies are not connected to power sources.
3. Loosen the captive screw on each flange at the top and bottom of the power supply
faceplate completely.
4. Grasp the handle on the power supply and pull firmly. Slide it halfway out of the chassis
(see Figure 32 on page 131, which shows the removal of DC power supplies).
5. Place one hand underneath the power supply to support it and slide it completely out
of the chassis.
CAUTION: Each power supply weighs approximately 8.4 lb (3.8 kg). Be
prepared to support the full weight of the power supply as you remove it
from the router.
6. Repeat the procedure for the remaining power supply.
Copyright © 2018, Juniper Networks, Inc.130
M120 Multiservice Edge Router Hardware Guide
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