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•
Connect the positive (+) source cable lugs to the return terminals on the circuit
breaker box, which are labeled
RTN(+)
.
•
Connect the negative (–) source cable lugs to the input terminals on the circuit
breaker box, which are labeled
–48V
.
7.
Slide a washer and then screw a nut onto each terminal stud (if the washers and nuts
were not installed on the studs, they should be in the accessory box). Using a 7/16-in.
nut driver or wrench, tighten the nuts.
8.
Replace the protective shield on the circuit breaker box and tighten the screws that
secure it to the box.
9.
Replace the rear lower impeller assembly by lining up the rails with the guides inside
the chassis, pushing the impeller straight in, and tightening the thumbscrew at each
corner of the impeller cover. For complete instructions, see “Installing the M40e Rear
Lower Impeller Assembly” on page 176.
10.
Apply voltage from the DC power sources to the power cables so the router receives
power.
11.
Press the switches on the circuit breaker box to the
ON
(
|
) position.
12.
Confirm that the LEDs on the power supply faceplates indicate correct operation: the
green
CB ON
LED lights steadily, the blue
OUTPUT OK
LED blinks briefly, then lights
steadily, and the yellow
CB OFF
LED does not light.
NOTE:
After powering off a power supply, wait at least 60 seconds before
turning it back on. After powering on a power supply, wait at least 60
seconds before turning it off.
If the system is completely powered off when you power on the power
supply, the Routing Engine boots as the power supply completes its startup
sequence. If the Routing Engine finishes booting and you need to power
off the system again, see Disconnecting AC Power from the M40e Router
or Disconnecting DC Power from the M40e Router.
After a power supply is powered on, it can take up to 60 seconds for status
indicators—such as LEDs on the power supply,
show chassis
commands,
and messages on the craft interface LCD—to indicate that the power
supply is functioning normally. Ignore error indicators that appear during
the first 60 seconds.
221
Copyright © 2010, Juniper Networks, Inc.
Chapter 16: Replacing M40e Hardware Components
All manuals and user guides at all-guides.com