Juniper CBL-M40-PWR-EU Benutzerhandbuch
Maintain and Replace the Power Supplies
135
Chapter 10
Maintain and Replace the Power Supplies
This chapter discusses the following topics related to maintaining and replacing the power
supplies:
supplies:
Tools and Parts Required
To replace DC or AC power supplies, you need the following tools and parts:
Phillips (+) screwdrivers, numbers 1 and 2
ESD grounding wrist strap
7/16-in. nut driver or wrench for tightening nuts to grounding and terminal studs on a
DC power supply; if 7/16-in. tool is not available, use pliers or an adjustable wrench
rather than a metric nut driver or wrench
rather than a metric nut driver or wrench
Maintain the Power Supplies
To maintain the power supplies, follow these guidelines:
Make sure that the power and ground cables on each DC power supply are arranged so
that they do not obstruct access to the other power supply or to the Routing Engine.
Routinely check the LEDs on the power supply faceplate. The green
OK
LED indicates
that the power supply is functioning normally; the red
FAIL
LED indicates a power supply
fault. For more information about the power supply LEDs, refer to “Power Supply LEDs”
on page 22.
on page 22.