Turning It Back On. After Powering On A Power Supply, Wait At Least 60; Seconds Before Turning It Off; Or Disconnecting Dc Power From The M40E Router; Supply Is Functioning Normally. Ignore Error Indicators That Appear During - Juniper M40E Hardware Manual

Copyright © 2010, Juniper Networks, Inc.
All manuals and user guides at all-guides.com
Connect the positive (+) source cable lugs to the return terminals on the circuit
breaker box, which are labeled
Connect the negative (–) source cable lugs to the input terminals on the circuit
breaker box, which are labeled
Slide a washer and then screw a nut onto each terminal stud (if the washers and nuts
7.
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.
Replace the protective shield on the circuit breaker box and tighten the screws that
8.
secure it to the box.
Replace the rear lower impeller assembly by lining up the rails with the guides inside
9.
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.
Apply voltage from the DC power sources to the power cables so the router receives
10.
power.
Press the switches on the circuit breaker box to the
11.
Confirm that the LEDs on the power supply faceplates indicate correct operation: the
12.
green LED lights steadily, the blue
CB ON
steadily, and the yellow
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,
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.

Chapter 16: Replacing M40e Hardware Components
RTN(+) .
–48V .
OUTPUT OK
LED does not light.
CB OFF
( ) position.
ON |
LED blinks briefly, then lights
commands,
show chassis
221