Replacing An Mx2000 Dc Power Supply Module (240 V China); Removing An Mx2000 Router Dc Power Supply Module (240 V China) - Juniper MX2020 Hardware Manual

MX2020 DC Power Electrical Safety Guidelines
MX2000 Router DC Power Subsystem Electrical Specifications | 205

Replacing an MX2000 DC Power Supply Module (240 V China)

Removing an MX2000 Router DC Power Supply Module (240 V China) | 408

1.
Installing an MX2000 Router DC Power Supply Module (240 V China) | 410
2.
Removing an MX2000 Router DC Power Supply Module (240 V China)
Before you remove a PSM, be aware of the following:
CAUTION:
PSM, each PSM slot must contain either a PSM or a blank panel. If you remove a PSM,
you must install a replacement PSM or a blank panel shortly after the removal.
NOTE: After powering off a PSM, wait at least 60 seconds before turning it back on.
To remove a DC PSM (see
NOTE: The minimum number of DC PSMs change, based on the configuration.
1. With one PSM installed and operational, remove any additional PSM by turning the power switch to
the off (O) position.
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.
3. Loosen the two captive screws on the PSM faceplate. Apply between 10 lb-in. (1.13 Nm) to 12 lb-in.
(1.35 Nm) of torque to each screw. Do not overtighten the screws.
4. While grasping the handle on the PSM faceplate with one hand, use your other hand to guide the PSM
away from the chassis.
To maintain proper cooling and prevent thermal shutdown of the operating
Figure 200 on page 409):
408