To deactivate red and yellow alarms, press the button labeled
ACO/LT
(for “alarm
cutoff/lamp test”), which is located to the right of the alarm LEDs. Deactivating an alarm
turns off both LEDs and deactivates the device attached to the corresponding alarm
relay contact on the craft interface.
describes the alarm LEDs and alarm cutoff button in more detail.
Table 6: Alarm LEDs and Alarm Cutoff/Lamp Test Button
Description
State
Color
Shape
Critical alarm LED—Indicates a critical condition that
can cause the router to stop functioning. Possible
causes include component removal, failure, or
overheating.
On steadily
Red
Warning alarm LED—Indicates a serious but nonfatal
error condition, such as a maintenance alert or a
significant increase in component temperature.
On steadily
Yellow
Alarm cutoff/lamp test button—Deactivates red and
yellow alarms. Causes all LEDs on the craft interface
to light (for testing) when pressed and held.
–
–
MX480 Component LEDs on the Craft Interface
•
Host Subsystem LEDs on the MX480 Craft Interface on page 38
•
Power Supply LEDs on the MX480 Craft Interface on page 39
•
DPC and MPC LEDs on the MX480 Craft Interface on page 39
•
FPC LEDs on the MX480 Craft Interface on page 39
•
SCB LEDs on the MX480 Craft Interface on page 40
•
Fan LEDs on the MX480 Craft Interface on page 40
Host Subsystem LEDs on the MX480 Craft Interface
Each host subsystem has three LEDs, located on the upper left of the craft interface, that
indicate its status. The LEDs labeled
RE0
show the status of the Routing Engine in slot
0
and the SCB in slot
0
. The LEDs labeled
RE1
show the status of the Routing Engine and
SCB in slot
1
.
describes the functions of the host subsystem LEDs on
the craft interface.
Table 7: Host Subsystem LEDs on the Craft Interface
Description
State
Color
Label
Host is functioning as the master.
On steadily
Green
MASTER
Host is online and is functioning normally.
On steadily
Green
ONLINE
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