Juniper MX2020 Hardware Manual page 335

Figure 140: Installing an MX2020, MX2010, MX2008 Router DC Power Supply Module (240 V China)
4. Verify that the INP0 and/or INP1 LEDs on the PSM are lit green steadily (see
NOTE: If you are connecting two feeds, INP0 and INP1, both LEDs on the PSM will be
lit green steadily.
5. Attach an electrostatic discharge (ESD) grounding strap to your bare wrist, and connect the strap to
one of the ESD points on the chassis.
6. Move the switch to the on (|) position.
Figure 138 on page 313).
315