Juniper Internet Router M160, Hardware Manual

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Installing the Router without a Mechanical Lift
2.
Loosen the thumbscrew at each corner of the component cover, using a
Phillips screwdriver if necessary.
3.
Pull the cover straight off the chassis.
CAUTION: To maintain proper airflow and provide electromagnetic shielding, do
not operate the router without the rear component cover in place.
Removing the SFMs
The router can have an SFM in each of the slots labeled
SFM 0
through
SFM 3
at the rear of the chassis, as shown in Figure 3. Each SFM
weighs approximately 5 lb (2.3 kg).
To remove an SFM, follow this procedure (see Figure 33):
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 on each ejector locking tab (shown in Figure 8), using
a Phillips screwdriver if necessary.
4.
Pull the end of each ejector handle outward until it is nearly perpendicular to
the SFM faceplate.
5.
Grasp the ejector handles and pull firmly to slide the SFM about halfway
out of the chassis.
6.
Place one hand under the SFM to support it, slide it completely out of the
chassis, and place it on the antistatic mat or in the electrostatic bag.
CAUTION: When an SFM is out of the chassis, do not hold it by the ejector handles.
They cannot support its weight.
Do not stack SFMs on top of or under other components. Place each one individually
in an electrostatic bag or on its own antistatic mat on a flat, stable surface.
If additional SFMs are installed, repeat the procedure to remove them.
Removing Components from the Chassis
87