Installing the Router without a Mechanical Lift
2. Loosen the thumbscrewat 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 shield ing, do
not operate the routerwithout the rear component cover in place.
Removing the SFMs
The router can have an SFM in each of the slotslabeled 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 wris t and
connect the strap toone 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 ElectrostaticDischarge Damage” on page 226.
3. Loosen the thumbscrewon each ejector locking tab (shown in Figure 8), using
a Phillips screwdriverif necessary.
4. Pull the end of each ejector handleoutward until it is nearly perpendicular to
the SFM faceplate.
5. Grasp the ejector handles and pull firmly to sli de the SFM about halfway
outofthechassis.
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 elec trostatic bag.
CAUTION: When an SFM is out of the chassis, do not hold it by the ejectorhandles.
They cannot supportits weight.
Do not stackSFMs on top of or under other components. Placeeach one individually
in an electrostatic bagor on itsown antistatic mat on a flat, stable surface.
If additional SFMs are installed,repeat the procedure to remove them.
Removing Components from the Chassis 87