Juniper MX2020 Hardware Manual page 605

3. Using a 2.5 mm flat-blade screwdriver, loosen the small screws on the face of the terminal block and
remove the block from the relay contact.
4. Using the 2.5 mm flat-blade screwdriver, loosen the small screws on the side of the terminal block.
Remove existing wires from the slots in the front of the block (see
Figure 254: Alarm Relay Contacts
1
M/S CHASSIS NUM
LC
17 18 19
SFB CB-RE
6 7
LC
7 8
Table 101: Alarm Relay Contacts on the Craft Interface
Function No.
1
SEE ALSO
Installing the MX2020 Craft Interface | 582
Removing the MX2020 Craft Interface | 581
Maintaining and Verifying the Status of the MX2020 Craft Interface | 589
1
9
Label
MINOR ALARM—[NC C NO]
MAJOR ALARM—[NC C NO]
Table 97 on page
Description
The alarm relays consist of three terminal
contacts with a normal closed (NC), common
(C), and normal open (NO) relays that signal a
minor or major alarm when broken.
587
344).