Figure 1-2. V.29 Modem Internal Components (2 of 2)

TM 11-7025-234-23

Slide switch for selecting either 115 or 230 volt operation.

Ac Voltage Selector

Fuse

Power supply fuse, 1/4 Amp.

Power Supply Assembly

Provides unregulated positive and negative vol tages for the

regulator board.

Mother Board

Provides hardware interface for circuit board components.

Used to adjust voltages on the power supply regulator

Voltage Adjust

board (Al).

Potentiometers

Used to check voltages on the power supply regulator board

Test Points

(Al).

Provides LED display of data rate and operational mode.

Rate/Mode Display

Board

Al Board

Power supply regulator board.

Not used in this model.

A2 Board

EIA interface board.

A3 Board

Control board.

A4 Board

Receiver board.

A5 Board

Receiver equalizer board.

A6 Board

Transmitter board.

A7 Board

Remote loopback board.

A8 Board

A9 Board

1/0 board.

Figure 1-2.

V.29 Modem Internal Components (2 of 2)

1-7