Disconnecting The Alarm Relay Wires From The Mx2020 Craft Interface; Figure 141: Alarm Relay Contacts; Table 90: Alarm Relay Contacts On The Craft Interface - Juniper MX2020 Hardware Manual

Disconnecting the Alarm Relay Wires from the MX2020 Craft Interface

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Copyright © 2015, Juniper Networks, Inc.
To disconnect the alarm relay wires from the router and an alarm-reporting device (see
Figure 141 on page 283):
Disconnect the existing wire at the external device.
1.
Attach an electrostatic discharge (ESD) grounding strap to your bare wrist, and connect
2.
the strap to one of the ESD points on the chassis.
Using a 2.5 mm flat-blade screwdriver, loosen the small screws on the face of the
3.
terminal block and remove the block from the relay contact.
Using the 2.5 mm flat-blade screwdriver, loosen the small screws on the side of the
4.
terminal block. Remove existing wires from the slots in the front of the block (see
Table 90 on page 283).

Figure 141: Alarm Relay Contacts

1
M/S CHASSIS NUM
LC
17 18 19
SFB
6 7 CB-RE 1
LC
7 8 9

Table 90: Alarm Relay Contacts on the Craft Interface

Function No.
1
Installing the MX2020 Craft Interface on page 299
Removing the MX2020 Craft Interface on page 451
Maintaining and Verifying the Status of the MX2020 Craft Interface on page 399
Chapter 20: Connecting the Router to the Network
Label Description
The alarm relays consist of three
MINOR ALARM—[NC C
terminal contacts with a normal closed
NO]
(NC), common (C), and normal open
MAJOR ALARM—[NC C
(NO) relays that signal a minor or major
NO]
alarm when broken.
283