Figure 175: Installing The Side Power Supply Filter - Juniper T640 Hardware Manual

T640 Core Router Hardware Guide
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298
Switch the power switch on the power supply to the
12.
Verify that the LED on the power supply faceplate is lit steadily, indicating that
DC OK
13.
the power supply is correctly installed and is functioning properly. The
blinks momentarily, then lights steadily.
NOTE: After a power supply is powered on, it can take up to 60 seconds
for status indicators—such as the LEDs on the power supply, the command
output displays, and messages on the LED display on the craft interface—to
indicate that the power supply is functioning normally. Ignore error
indicators that appear during the first 60 seconds.

Figure 175: Installing the Side Power Supply Filter

Air filter bracket
T640 Three-Phase Delta and Wye AC Power Supply Overview on page 57
T640 Three-Phase Delta and Wye AC Power Supply LEDs on page 60
Powering Off a T640 Router on page 136
Maintaining the T640 Power Supplies on page 159
T640 Preventing Electrostatic Discharge Damage on page 306
General Safety Guidelines for M Series, MX Series, and T Series Routers on page 303
ON
Air filter
Copyright © 2010, Juniper Networks, Inc.
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DC OK LED