Mx2020 Alarm Leds And Alarm Cutoff/Lamp Test Button - Juniper MX2020 Hardware Manual

Table 11: Craft Interface LEDs, Buttons, and Connectors (continued)
Function No.
10
11
12
Related
Documentation

MX2020 Alarm LEDs and Alarm Cutoff/Lamp Test Button

Copyright © 2013, Juniper Networks, Inc.
Label
and
CB-RE 0 CB-RE 1
LC 0 through LC 9
through
SFB 0 SFB 7
Replacing the MX2020 Craft Interface on page 214
MX2020 Craft Interface Serial Number Label on page 402
Two large alarm LEDs are located at the upper right of the craft interface. When lit, the
circular red LED indicates a critical condition that can result in a system shutdown. A lit
triangular yellow LED indicates 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 12 on page 36 describes the alarm LEDs and alarm cutoff button in more detail.
Chapter 2: MX2020 Hardware Components
Description
Online and Offline buttons located next to each
Control Board and Routing Engine (CB-RE) allows
you to take individual CB-REs offline or online.
Status LEDs for the two CB-REs cards.
Online and Offline buttons located next to each line
card allows you to take individual line cards offline
or online.
Status LEDs for the lower ten line cards.
Online and Offline buttons located next to each SFB
allows you to take individual SFBs offline or online.
Status LEDs for eight SFBs.
ACO/LT
(for "alarm
35