Installing A Pcg In An M40E Router; Figure 107: Removing A Pcg - Juniper M40E Hardware Manual

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Remove the rear component cover by loosening the thumbscrew at each corner of
3.
the cover and pulling it straight off the chassis. For complete instructions, see
"Reinstalling the M40e Components into the Chassis" on page 97.
Press and hold the offline button on the PCG faceplate until the yellow LED labeled
4.
lights, which takes about 3 seconds.
FAIL
(Keep in mind that if you are removing the master PCG, forwarding halts while the
Packet Forwarding Engine resets so that the components start using the clock signal
from the other PCG, which becomes the master.
Loosen the thumbscrew at the lower right corner of the PCG faceplate, using a Phillips
5.
screwdriver if necessary.
Grasp the thumbscrew and slide the PCG about halfway out of the chassis.
6.
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.
Place one hand under the PCG to support it, slide it completely out of the chassis, and
7.
place it on the antistatic mat or in the electrostatic bag.

Figure 107: Removing a PCG

Installing a PCG in an M40e Router

To install a PCG (see Figure 108 on page 198):
Attach an electrostatic discharge (ESD) grounding strap to your bare wrist, and connect
1.
the strap to one of the ESD points on the chassis. For more information about ESD,
see "Preventing Electrostatic Discharge Damage to an M Series, MX Series, or T Series
Router" on page 232.
Place one hand under the PCG to support it and grasp the thumbscrew on the faceplate
2.
with the other hand.
Chapter 16: Replacing M40e Hardware Components
197