Replacing A T640 Six-Input Dc Power Supply; Figure 192: Installing A Four-Input 240-A Dc Power Supply - Juniper T640 Hardware Manual

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Replacing a T640 Six-Input DC Power Supply

Copyright © 2013, Juniper Networks, Inc.
Verify that the LEDs on the power supply faceplate are lit steadily, indicating
19. CB ON
that the circuit breakers are on.
Verify that the DC OK LED on the power supply faceplate is lit steadily, indicating that
20.
the power supply is correctly installed and is functioning properly. The
blinks momentarily, then lights steadily.

Figure 192: Installing a Four-Input 240-A DC Power Supply

T640 Power System Description on page 60
T640 Four-Input 240-A DC Power Supply Description on page 66
T640 Four-Input 240-A DC Power Supply LEDs on page 68
Troubleshooting the T640 Power System on page 207
T640 DC Power Supply Electrical Specifications on page 428
Site Electrical Wiring Guidelines for Juniper Networks Devices on page 426
Removing a T640 Six-Input DC Power Supply on page 330
1.
Installing a T640 Six-Input DC Power Supply on page 332
2.
Chapter 17: Replacing T640 Router Hardware Components
LED
DC OK
329