Juniper Internet Router M160, Hardware Manual

Page: 113 / 312

Installing the Router without a Mechanical Lift
Figure 34: Removing an MCS
PCG 0
SFM 0
SFM 1
MCS 0
RE 0
1928
Extractor clip
Removing the PCGs
The router has two PCGs installed in the slots labeled
PCG 0
and
PCG 1
at the rear of
the chassis, as shown in Figure 3. Each PCG weighs approximately 1 lb (0.5 kg).
To remove the PCGs, follow this procedure (see Figure 35):
1.
Place an electrostatic bag or antistatic mat on a flat, stable surface.
2.
Attach an electrostatic discharge (ESD) grounding strap to your bare wrist and
connect the strap to one of the ESD points on the chassis. Make sure the router
is attached to a proper earth ground. For more information about ESD, see
“Preventing Electrostatic Discharge Damage” on page 226.
3.
Loosen the thumbscrew at the lower right corner of the PCG faceplate, using
a Phillips screwdriver if necessary.
4.
Grasp the thumbscrew and slide the PCG about halfway out of the chassis.
CAUTION: Be careful to slide the PCG straight out of the chassis to avoid bending
any of the pins on the underside of the board.
5.
Place one hand under the PCG to support it, slide it completely out of the
chassis, and place it on the antistatic mat or in the electrostatic bag.
6.
Repeat the procedure to remove the second PCG.
Removing Components from the Chassis
89