Juniper MX2020 Quick Start Manual page 61

3d universal edge router

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Ensure that the voltage across the DC power source cable leads is 0 V and that there

is no chance that the cable leads might become active during installation.

Using both hands, slide the PSM straight into the chassis until the PSM is fully seated

in the chassis slot. Tighten the two captive screws to secure the PSM to the chassis.

NOTE:

The MX2020 router configured for DC input power must use only

DC PDMs and DC PSMs. AC and DC PSMs or PDMs must not be mixed

within a single router.

Verify that the

INP0

INP1

LEDs will be lit yellow if that input's voltage is in reverse polarity. Check the polarity

of the power cables to fix the condition (see

Table 11 on page

62).

Attach an electrostatic discharge (ESD) grounding strap to your bare wrist, and connect

the strap to one of the ESD points on the chassis.

Move the switch to the on (

Verify that the

PWR OK

about MX2020 DC PSM LEDs.

LEDs on the PSM are lit green steadily. The

Figure 42 on page 62

) position.

LED is lit green steadily. See

Connect DC Power Supply Modules

INP0

and

Table 11 on page 62

for information

INP1

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