1. Attach an ESD grounding strap to your bare wrist and connect the strap to one of the
ESD points on the chassis.
2. With a 3/8-inch nut driver or pliers, loosen and remove the two nuts that secure the
craft interface to the chassis. Also remove the two washers located behind the nuts.
3. Grasp the craft interface by the left and right flanges and carefully pull it straight out
of the chassis.
4. Disconnect attached cable.
Figure 61: Removing the M120 Craft Interface
See Also Preventing Electrostatic Discharge Damage to an M120 Router on page 316•
• M120 Craft Interface Description on page 11
• M120 Alarm Relay Contacts on the Craft Interface on page 17
• Installing the M120 Craft Interface on page 185
Installing the M120 Craft Interface
To install the craft interface (see Figure 62 on page 186):
1. Attach an ESD grounding strap to your bare wrist and connect the strap to one of the
ESD points on the chassis.
2. Connect attached cable.
3. Align the guide pin on the back side of the craft interface with the receptacle inside
the upper left corner of the chassis.
4. Press the craft interface into place.
185Copyright © 2018, Juniper Networks, Inc.
Chapter 24: Replacing Chassis Components
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