71
Removing and Installing the Controller Chassis
Description, Installation, Operations, and Maintenance Manual
Federal Signal www.fedsig.com
5.3.8 Installing the Amplifier Card
To install the amplifier card:
1. Temporarily secure the cables out of the way of the amplifier card to be placed in the
empty position.
2. Observe the rear holding rail formed by metal notches on the back wall. Keep the
board between these notches as it slides down.
3. Place the amplifier card in the top portion of the front plastic rail and between the
first two notches of the back rail.
Figure 46 Amplifier Card in the Top Portion of the Front Plastic Rail
4. Slowly slide the card down while observing that no wire gets under the board.
5. Check the alignment of the back side of the card between the metal notches.
6. The front plastic rail has a step, on which the card may stop, when it is 80% of the
way down. In such a case, grab the card by only the back handle, and lift it slightly
(by 2 mm or 0.1 in) so that the front clears the step of the plastic rail. The card then
easily slides the rest of the way down, gently resting on the connection headers.
NOTE
: Prepare the card for the final step of insertion into the connection headers.
7. Ensure that all three headers on the bottom are aligned.
8. Ensure that the metal handles are in the 20 degree and 60 degree angle up from
horizontal, with the front handle short end under the metal ridge and the rear handle
short end in the slot of the back wall.
Figure 47 Metal Handles in the 20 degree and 60 degree Angle
9. Push both handles down to their horizontal position. This inserts the card plugs into
their headers.
