Replacing The Circuit Breaker Box On A Dc-Powered M40E Router; Figure 122: Installing A Dc Power Supply; Removing The Circuit Breaker Box From A Dc-Powered M40E - Juniper M40E Hardware Manual

M40e Multiservice Edge Router Hardware Guide
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Replacing the Circuit Breaker Box on a DC-Powered M40e Router

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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.

Figure 122: Installing a DC Power Supply

M40e Field-Replaceable Units (FRUs) on page 157
Tools and Parts Required to Remove Components from an M40e Router on page 309
DC Power Disconnection Warning for M Series, MX Series, and T Series Routers on
page 259
M40e DC Power Electrical Safety Guidelines on page 257
M40e DC Power Distribution on page 280
The circuit breaker box on a DC-powered router is field-replaceable, but you must power
off the router before removing or replacing it.
Removing the Circuit Breaker Box from a DC-Powered M40e Router on page 219
Installing the Circuit Breaker Box in a DC-Powered M40e Router on page 220
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