Replacing A T4000 Dc Power Supply Cable; Removing A T4000 Dc Power Supply Cable - Juniper T4000 Hardware Manual

T4000 Router Hardware Guide
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Replacing a T4000 DC Power Supply Cable

Removing a T4000 DC Power Supply Cable

262
Switch on the customer site circuit breakers to provide voltage to the DC power source
15.
cables.
Verify that the
INPUT PRESENT
16.
indicating that the inputs are receiving power.
Switch the power switch on the power supply to the
17.
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.
Verify that the DC OK LED on the power supply faceplate is lit steadily, indicating that
18.
the power supply is correctly installed and is functioning properly.
T4000 Power System Description on page 43
T4000 Six-Input DC Power Supply LEDs on page 45
Maintaining the T4000 Power System on page 186
Troubleshooting the T4000 Power System on page 204
Removing a T4000 DC Power Supply Cable on page 262
1.
2. Installing a T4000 DC Power Supply Cable on page 263
To remove a DC power supply cable from a six-input DC power supply:
Switch off the customer site circuit breakers for all the cables attached to the power
1.
supply. Make sure that the voltage across the DC power source cable leads is 0 V and
that there is no chance that the cables might become active during the removal
process.
Remove the power cable from the external DC power source.
2.
Remove the clear plastic cover protecting the terminal studs on the faceplate.
3.
Remove the nut and washer from the terminal stud on the power supply (see
4.
Figure 120 on page 263). Use a 7/16-in. (11 mm) nut driver.
LEDs on the power supply faceplate are lit steadily,
ON position (
Copyright © 2013, Juniper Networks, Inc.
| ). The DC OK LED