Juniper CBL-M40-PWR-AU ユーザーズマニュアル
All LEDs on One Supply are Off or LED States are not Correct
M40 Internet Router Hardware Guide
196
Perform the following steps to diagnose and correct the problem:
1.
Check the red alarm LED on the craft interface:
If it is lit, issue the following CLI command for more information about the source of
an alarm condition:
user@host> show chassis alarms
For a list of messages that can appear, see “Hardware and Interface Alarm
Messages” on page 192.
Messages” on page 192.
A common cause of power supply shutdown is that the temperature of the power
supply or another router component has exceed the maximum temperature.
supply or another router component has exceed the maximum temperature.
If the red alarm LED is not lit, check that the power switch is in the
ON
(
|
) position
on the power supply faceplate.
2.
Replace the faulty power supply with a spare. For instructions, see “Replace an AC Power
Supply” on page 136 and “Replace a DC Power Supply” on page 141. If the LEDs light
correctly on the spare, the original power supply is faulty. Return it to Juniper Networks
for replacement, as described in “Return the Router or Its Components” on page 215.
Supply” on page 136 and “Replace a DC Power Supply” on page 141. If the LEDs light
correctly on the spare, the original power supply is faulty. Return it to Juniper Networks
for replacement, as described in “Return the Router or Its Components” on page 215.
3.
If the spare power supply also does not work, connect the router to a different power
source. You might also try replacing the power cord (on an AC-powered router) or power
cable (on a DC-powered router). For instructions, see “Disconnect and Connect AC
Power” on page 140 and “Disconnect and Connect DC Power” on page 147.
source. You might also try replacing the power cord (on an AC-powered router) or power
cable (on a DC-powered router). For instructions, see “Disconnect and Connect AC
Power” on page 140 and “Disconnect and Connect DC Power” on page 147.
If you cannot determine the cause of the problem or need additional assistance, see “Juniper
Networks Technical Assistance Center” on page 194.
Networks Technical Assistance Center” on page 194.