Technical data

9-6

Field Replacable Units

Replacement

1. Ensure that the affected system is disconnected from the AC

or DC power source.

Caution

To ensure a good connection to the backplane circuitry,

check that the exposed connector pins on the side of the

control board (J3) are straight before you install the

board.

2. Slide the replacement control board assembly gently into the

card guides until the pins of J3 (Figure 9-1 on page 9-7) touch

the backplane connector.

3. Use firm steady pressure to start the pins into the connector

and seat the spring clips on the switch bracket.

4. Reinstall the front bezel, if the installation includes one.

5. Reconnect the system to the AC or DC power source.