Juniper CBL-M40-PWR-AU ユーザーズマニュアル
Troubleshoot the Power Supplies
195
Chapter 16
Troubleshoot the Power Supplies
When a power supply is functioning correctly, the green LED labeled
OK
is lit steadily and the
red LED labeled
FAIL
is not lit.
If the LEDs are in any other states, consult the following sections:
All LEDs on Both Supplies are Off
If all LEDs are off on both power supply faceplates, either someone has switched off power to
the router or the system temperature has exceeded the acceptable maximum. In the latter
case, the Routing Engine shuts down both power supplies. There is no power to the router, so
the alarm LEDs on the craft interface are not lit.
the router or the system temperature has exceeded the acceptable maximum. In the latter
case, the Routing Engine shuts down both power supplies. There is no power to the router, so
the alarm LEDs on the craft interface are not lit.
Excessive system temperature is almost always caused by excessive environmental
temperature. Correct the environmental temperature before powering the router on again.
temperature. Correct the environmental temperature before powering the router on again.
All LEDs on One Supply are Off or LED States are not Correct
If either of the following conditions apply, perform the diagnostic procedure that follows:
The LEDs on one power supply are all off, but the LEDs on the other supply indicate that
it is functioning properly.
The LED states on one or both supplies indicate a problem: the green LED labeled
OK
is
not lit and the red LED labeled
FAIL
is lit.