NOTE: After a power supply is powered on, it can take up to 60 seconds
forstatusindicators—such asthe output status LEDs on the power supply,
the command output display, and messages on the LCD on the craft
interface—to indicate that the power supply is functioning normally. Ignore
error indicators that appear during the first 60 seconds.
11. Verify that the CB ON LED on the power supply faceplate is lit steadily. The CB ON
LED blinks momentarily, then lights steadily to indicate that the circuit breakers are
on.
12. Verify that the DC OK LED on the power supply faceplate is lit steadily, indicating that
the power cable is correctly installed and the power supply is functioning normally.
Figure 192 on page 378, Figure 193 on page 379, and Figure 194 on page 380) show how to
secure the nut and washer to the power supply.
Figure 192: Connecting a DC Power Cable to a Two-Input 160-A DC Power
Supply
Copyright © 2017, Juniper Networks, Inc.378
T640 Core Router Hardware Guide
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