Table 9: MX2020 AC Power Supply Module LEDs
DescriptionStateColorLabel
Power is functioning normally with no alarms.OnGreenPWR OK
PSM controller is functioning normally.OnYellow
PSM is not functioning normally or the AC input
voltage is out of range.
Off–
PSM is not functioning normally or the AC input
voltage is out of range.
OnRedFAULT
PSM is functioning normally.Off–
AC input is within the required voltage range and
the DIP switch is set to on.
OnGreenINP0
AC input is out of the required voltage range.OnYellow
AC input to the PSM is not present.Off–
AC input is within the required voltage range and
the DIP switch is set to on.
OnGreenINP1
AC input is out of the required voltage range.OnYellow
AC input to the PSM is not present.Off–
9. Repeat Steps 1 through 8 for installing PSMs in slots 0, 1, and 2, where required.
Figure 39: MX2020 AC Power Supply Module Front View
NOTE: Each PSM slot not occupied by an AC PSM must be covered by a
PSM blank panel.
57Copyright © 2015, Juniper Networks, Inc.
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