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on the craft interface. Each PDM has an LED per feed indicating whether the feed is active or not, or
whether the feed is connected properly.
Figure 42: Selecting DC Power Subsystem Feed Redundancy
3. 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.
4. 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 MX2010 systems 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 system.
5. Verify that the INP0 or INP1 LEDs on the PSM is lit green steadily. The INP0 or INP1 LED is lit yellow
if that input's voltage is in reverse polarity. Check the polarity of the power cables to fix the condition
(see
Figure 43 on page 77
6. Attach an electrostatic discharge (ESD) grounding strap to your bare wrist, and connect the strap to
one of the ESD points on the chassis.
7. Move the switch to the on (|) position.
8. Verify that the PWR OK LED is lit green steadily. See
MX2010 DC PSM LEDs.
and
Table 10 on page
76).
Table 10 on page 76
for information about
75
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