Mx480 Dc Power Supply Leds; Table 15: Power Supply Redundancy And Power Distribution; Table 16: Dc Power Supply Leds - Juniper MX480 Hardware Manual

Table 15: Power Supply Redundancy and Power Distribution

DC Power Supply Slot
PEM0
PEM1
PEM2
PEM3
Related
Documentation

MX480 DC Power Supply LEDs

Table 16: DC Power Supply LEDs

Label Color
PWR OK Green
Copyright © 2011, Juniper Networks, Inc.
Four power supplies provide full redundancy. If a DC power supply in a redundant
configuration is removed or fails, its redundant power supply takes over without
interruption. The DC power supply in
in slot , and the DC power supply in
PEM0
supply in slot PEM1 . If only two DC power supplies are installed, they must be installed
in slots and or in slots
PEM0 PEM1
Table 15 on page 37 shows the components that are powered by each DC power supply
slot. It applies to existing and high-capacity power supplies.
Power Supply Provides Power to the Following Components
Fan tray, DPC slots 0 and
Fan tray and DPC slots 2 through
Fan tray, DPC slots 0 and
Fan tray and DPC slots 2 through
Power Supply LEDs on the MX480 Craft Interface on page 30
MX480 Power System Description on page 32
MX480 AC Power Supply Description on page 33
MX480 DC Power Supply LEDs on page 37
DC Power Supply Electrical Specifications for the MX480 Router on page 280
Each DC power supply faceplate contains three LEDs that indicate the status of the
power supply (see Table 16 on page
LEDs on the craft interface.In addition, a power supply failure triggers the red alarm LED
on the craft interface.
NOTE: An SCB must be present for the
State Description
Off Power supply is not functioning normally. Check the
information.
serves as redundant to the DC power supply
PEM2
serves as redundant to the DC power
PEM3
and .
PEM2 PEM3
1 , and SCB slots 0 and 1
5
1 , and SCB slots 0 and 1
5
37). The power supply status is also reflected in two
PWR OK
Chapter 2: MX480 Hardware Components
LED to go on.
INPUT OK LED for more
37