Replacing A T640 Three-Phase Wye Ac Power Supply; Removing A T640 Three-Phase Wye Ac Power Supply - Juniper T640 Hardware Manual
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- Hardware manual (580 pages) ,
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- Replacing (31 pages)
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Replacing a T640 Three-Phase Wye AC Power Supply
Copyright © 2010, Juniper Networks, Inc.
Remove the ESD grounding strap from the approved site ESD grounding point. See
17.
the instructions for your site. Reconnect the strap to one of the ESD points on the
chassis.
Verify that the
LED on the power supply faceplate is lit steadily, indicating that
AC OK
18.
the AC terminal block is receiving power.
Switch the power switch on the power supply to the
19.
to the router components.
Verify that the
LED on the power supply faceplate is lit steadily, indicating that
DC OK
20.
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.
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
Troubleshooting the T640 Power System on page 171
T640 Preventing Electrostatic Discharge Damage on page 306
T640 AC Power Cord Specifications on page 358
1.
Removing a T640 Three-Phase Wye AC Power Supply on page 285
Installing a T640 Three-Phase Wye AC Power Supply on page 288
2.
Removing a T640 Three-Phase Wye AC Power Supply
To remove a three-phase wye AC power supply:
Switch off the customer site circuit breakers to the power supply being removed. Make
1.
sure that the voltage across the AC power source cord is 0 V and that there is no
chance that the power cord might become active during the removal process.
Attach an electrostatic discharge (ESD) grounding strap to your bare wrist, and connect
2.
the strap to one of the ESD points on the chassis.
Switch the power switch on the power supply faceplate to the standby position.
3.
NOTE: After powering off a power supply, wait at least 60 seconds before
turning it back on.
Chapter 17: Replacing T640 Router Hardware Components
position (
ON
) to provide power
|
DC OK
LED
285
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Troubleshooting
