Mx960 Alarm Leds And Alarm Cutoff/Lamp Test Button; Figure 5: Alarm Relay Contacts; Table 6: Alarm Leds And Alarm Cutoff/Lamp Test Button - Juniper MX960 Hardware Manual

MX960 3D Universal Edge Router Hardware Guide
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MX960 Alarm LEDs and Alarm Cutoff/Lamp Test Button

Table 6: Alarm LEDs and Alarm Cutoff/Lamp Test Button

Shape
16
the red or yellow alarm on the craft interface, the alarm relay contacts are also activated.
The alarm relay contacts are located on the upper right of the craft interface.

Figure 5: Alarm Relay Contacts

Disconnecting the Alarm Relay Wires from the MX960 Craft Interface on page 307
Connecting the Alarm Relay Wires to the MX960 Craft Interface on page 255
Two large alarm LEDs are located at the upper right of the craft interface. The circular
red LED lights to indicate a critical condition that can result in a system shutdown. The
triangular yellow LED lights to indicate a less severe condition that requires monitoring
or maintenance. Both LEDs can be lit simultaneously.
A condition that causes an LED to light also activates the corresponding alarm relay
contact on the craft interface.
To deactivate red and yellow alarms, press the button labeled
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.
Table 6 on page 16 describes the alarm LEDs and alarm cutoff button in more detail.
Color State
Red On steadily
Yellow On steadily
– –
Description
Critical alarm LED—Indicates a critical condition that
can cause the router to stop functioning. Possible
causes include component removal, failure, or
overheating.
Warning alarm LED—Indicates a serious but nonfatal
error condition, such as a maintenance alert or a
significant increase in component temperature.
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.
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