TB8100 Service Manual Control Panel Servicing 279© Tait Electronics Limited September 200618.3 Replacing the Circuit BoardThe circled numbers in the following instructions refer to Figure 18.1 onpage 280.Removal 1. Gently pull the volume knob off its shaft.2. Disconnect the speaker plug b from the socket on the board.3. Remove the M3 Torx screws c securing the board and D-rangeconnector.4. Carefully lift and rotate the board away from the control panel chassis,feeding the shaft of the volume control through the hole in thechassis, until the board is standing upright d.5. With the board standing upright, disconnect the flexible connectorto the keypad e.Refitting 1. Withdraw the flexible connector to the keypad through the hole inthe side of the control panel chassis.2. Refit the board to the chassis, feeding the speaker wire through thehole in the board. Secure the board and D-range connector with theM3 Torx screws.Note The multi-reciter control board has three washers between theD-range connector and chassis pillars.3. Reconnect the speaker wire.4. Insert the flexible connector into its socket on the board through thehole in the side of the chassis.Important Make sure the flexible connector is correctly positioned andlatched in its socket, as shown in Figure 18.2 on page 281.5. Refit the volume knob.
