Mx2020 Ac Power Supply Module Leds - Juniper MX2020 Hardware Manual

106
Figure 45: Selecting the Input Feed on the AC Power Supply Module
ON
PWR OK FAULT
0 1
INP0 INP1
A PSM failure triggers the alarm LED on the craft interface. For information about connecting to AC power
sources, see "MX2000 AC Power System Electrical Specifications" on page 179.
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MX2020 AC Power Supply Module LEDs | 106

MX2020 AC Power Supply Module LEDs
Each AC PSM faceplate contains four LEDs. These LEDs are described in Table 29 on page 107. There are
a total of eighteen bicolor LEDs located in the craft interface, and are labeled 0 through 8 for the bottom
nine PSMs, and 9 through 17 for the top nine PSMs. Both feeds are alive during operation, but only one
feed provides current. In addition, a PSM failure triggers the red alarm LED on the craft interface.