Removing And Replacing The Td-225 Emi Shield - Intergraph TD-22x System Manual

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Removing and Replacing the TD-225 EMI Shield

Some TD-225 systems are equipped with an electromagnetic interference (EMI) shield,
which is a flat metal plate that covers the opening on the right side (as viewed from the back)
of the base unit chassis. The top and right edges of the shield consist of tabs (also known as
fingers); the left edge has a 90-degree lip that attaches by thumbscrew to the rear of the base
unit chassis. A tab near the middle of the shield engages a recessed clip attached to the drive
mounting bracket. See the following figure.
If your TD-225 system is equipped with an EMI shield, you must also remove this after
opening the base unit.
To remove the TD-225 EMI shield:
1. Remove the base unit cover as described earlier in "Opening the Base Unit."
2. Look for two thumbscrews on the back of the base unit chassis, midway down the right
side (as viewed from the back). Remove the upper of these two thumbscrews. See the
following figure.
CAUTION Do not remove the lower of these two thumbscrews; this attaches the processor fan bracket
to the chassis.
Chassis
Fingers
EMI Shield
Recessed Clip
Tab