the system. A single power supply can provide full power for as long as the router is
operational.
Related
Documentation
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
T4000 Six-Input DC Power Supply LEDs
The LEDs on the faceplate of each power supply (see
Table 19 on page 45
) indicate the
status of the power supply. The
DC OK
,
OVERTEMP
, and
INPUT PRESENT
LEDs are located
on the faceplate of the power supply. A power supply failure also triggers the red alarm
LED on the craft interface.
Table 19 on page 45
describes the six-input DC power supply LEDs on the faceplate.
Table 19: Power Supply LEDs
Description
State
Color
LED
Input is receiving voltage within the required range of –40 V through
–72 V.
On steadily
Green
INPUT
PRESENT
—One
per input
Input voltage is not present, or the voltage is not within the required
range of –40 V through –72 V.
Off
–
When input 0 and at least one other input is properly energized
and the power switch is ON, this input indicates that the power
supply is functioning normally.
On steadily
Blue
DC OK
—One per
power supply
Power supply is starting up or is not receiving any input voltage.
The power switch on the power supply faceplate or the customer
site external circuit breakers might be off. A fault might have
occurred.
Off
–
Power supply has exceeded the recommended temperature and
has been powered off.
On steadily
Yellow
OVERTEMP
—One
per power
supply
The power supply is within the recommended temperature, or the
power supply is not receiving any input voltage.
Off
–
Related
Documentation
T4000 Power System Description on page 43
•
•
Maintaining the T4000 Power System on page 186
•
Troubleshooting the T4000 Power System on page 204
T4000 Switch Interface Board (SIB) Overview
•
T4000 Switch Interface Board (SIB) Description on page 46
•
T4000-SIB Description on page 46
45
Copyright © 2013, Juniper Networks, Inc.
Chapter 3: T4000 Hardware Components Overview
Содержание T4000 -
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