NuTone IMA-3303 Instructions Manual

9

SYSTEM OPERATING CONTROLS

PM

21

22

20

19

18 17 16 15 14

13

12 11

1

2

3

4 5

6

7

8

9 10

Master Station Controls

1

END CALL: Ends intercom communication and returns system
to audio source.

2 DOOR TALK: Initiates intercom communication to the door

speakers.

3

INSIDE/PATIO: Initiates intercom communication to remote
stations.

4 TIMER: Enables or disables the radio timer. The indicator

light will illuminate next to the timer button when the Radio
timer is enabled.

5 PROGRAM AUDIO SOURCE: Selects the program audio

source: AM, FM, CD/TAPE and AUX. The indicator light will
illuminate next to the selected program audio source.

6 PROGRAM OFF: Turns off the selected program audio source.

NOTE: The Program Off key does not affect the intercom
operation.

7 MASTER VOLUME: Adjusts the volume at the master

station.

8 MEMORY 1-6 KEYS: Provides direct access to stored radio

frequencies.

9 ▲ ▼ UP/DOWN TUNING: Provides manual tuning of the

AM/FM radio.
10 SCAN: Activates scan tuning during AM/FM operation.
11 DOOR RELEASE KNOCKOUT: Mounting hole for optional

door release push button.

12 MICROPROCESSOR RESET: Initiates a reset of the micro-

processor. NOTE: A reset of the microprocessor will erase the
system’s memory.

13 MEMORY SET: Stores desired radio frequency into a selected

memory location.

14 TIME SET/HOUR/MIN: Used when setting the timer and

clock.

15 TREBLE: Adjusts the high frequency audio content of the

source audio.

16 BASS: Adjusts the low frequency audio content of the source

audio.

17 SYSTEM VOLUME: Adjusts the program audio level

throughout the system.

18 LOUDNESS: Compensates for the loss of bass and treble

response the human ear has when listening to audio at low
volume levels.

19 INTERCOM VOLUME: Adjusts intercom audio level

throughout the system.

20 MASTER STATION STATUS SWITCH: Sets the master station

in one of the following modes: RADIO INTERCOM,
INTERCOM ONLY, OFF or MONITOR.

21 REMOTE STATION STATUS SWITCHES: Sets the remote

stations in one of the following modes: RADIO INTERCOM,
INTERCOM ONLY, OFF or MONITOR.

22 ELECTRONIC CHIME TUNE SELECTION: Selects the tune

of the optional IA-29 Electronic chime.

FIGURE 20

10

SYSTEM OPERATING CONTROLS

Digital Clock

SETTING THE TIME

1.

Press the TIME SET key one time. The display will begin
flashing, and the words SET TIME will be displayed.

2. Within 5 seconds, press the HOUR key to advance the hours.
Use the HOUR key
to select AM/PM by
advancing past
12:00 on the
display.

3. Within 5 seconds,
press the MIN key to advance the minutes.

4. After entering the correct time, release the key. The display will
stop flashing after 5 seconds, and the time will be set.

Operational Checkout

If the Radio-Intercom does not operate according to the
following instructions, refer to the Installer's Troubleshooting
Guide.

1. Set STATION STATUS SWITCHES to the RADIO/
INTERCOM position.

2. Set the MASTER VOLUME control to maximum.

3. Set each individual station VOLUME control to maximum.

4. Set the SYSTEM VOLUME control to

1

⁄2 position.

5. Set the INTERCOM VOLUME to

3

⁄4 position.

6. Set the BASS and TREBLE controls to the

1

⁄2 position.

7. Tune in a strong FM radio station as follows:

A. Press the FM key
B. Use the ▲ ▼ keys to locate a strong FM radio station.

Beginning with the master station, check each station in the
system for proper operation using the following procedure:

1. Adjust the station's Volume Control (Master Volume
on the master station) between maximum and minimum,
making sure the audio is completely muted in the minimum
position and no noise is created by the volume control
during adjustment.

2. Press the INSIDE/PATIO key. Radio audio will mute and
audio from the station will be heard at all stations in the
system, except the door speaker(s).

3. Release the INSIDE/PATIO key to hear the reply.
NOTE: To reply to an intercom call initiated at a remote
station, the Inside/Patio key must be pressed at the station
responding to the intercom call. If, however, an intercom
call is initiated at the master station, the Inside/Patio key
does not

need to be pressed at the station responding to
the intercom call. Audio from the responding stations and
all stations in the system will be heard at the master station
when the INSIDE/PATIO key is released.

4. Press the END CALL key. Intercom communication will end,
and radio audio will return to all stations in the system.

5. Press the DOOR TALK key. Radio audio will mute, and audio
from the station will be heard at the door speaker(s) and all
stations in the system.

6. Release the DOOR TALK key. Audio from the door speakers
will be heard at all stations in the system.

7. Press and hold the END CALL key. Door communication will
end, and radio audio will return to all stations in the system.

8. Press and hold the END CALL key for 2 seconds. The radio
will turn off.

9. Press and hold the END CALL key for 2 seconds.
The radio will turn on. See page 5 for information on
controlling the radio from a remote station.

10. Repeat procedure at next station.

Setting System Volume

The volume levels required at each Station may vary with the
locations of the speaker and the size of the room where the
speaker is located. Spend some time experimenting with
volume levels, and adjust each speaker so that you can clearly
hear the radio and intercom. Use the following procedures to set
your system’s volume levels:

1. At each remote station, turn the volume control completely
clockwise to maximum volume.

2. At the master station, set the REMOTE and MASTER
SPEAKER STATUS switches to the RADIO INTERCOM
position.

3. Turn the MASTER VOLUME control to maximum volume.

4. Turn the SYSTEM VOLUME control on the master station to
approximately one-third volume.

5. Select an AM or FM radio station with a strong, clear signal.

6. Adjust the master station's SYSTEM VOLUME control until
you have enough volume at the remote station that requires
the highest volume (i.e. a large living room, family room,
basement, etc.).

NOTE: The Master Station and all Remote Stations
(except the door speakers) are equipped with their own
volume controls. Although the Master Station SYSTEM
VOLUME sets the System's Volume level, you may adjust
an individual speaker's volume level as desired.

7. Adjust the MASTER VOLUME control and all remote
stations' VOLUME controls to the volume level you
desire. Do not set the remote stations' volume controls
below

1

⁄2 volume.

Setting Intercom Volume

1. Initiate Intercom call from the master station by pressing the
INSIDE PATIO key.

2. Speak with a normal voice about 2-3 feet from the station
speaker.

3. Adjust the INTERCOM VOLUME control until the initiating
station’s audio is clearly heard at all stations in the system.

NOTE: The volume control at all stations should be set
between

1

⁄2 to maximum volume for proper intercom

operation.

4. Repeat the above procedure at several locations until an
acceptable intercom audio level is achieved at all stations.

PM

11

OPERATIONAL CHECKOUT

The following diagnostic test have been incorporated into
the NuTone IMA-3303 Radio Intercom to assist in system
troubleshooting.

1. Master station keyboard test

2. Control line voltage test

3. Display test
The following applies to all three diagnostic tests:

1. To access any of the diagnostic tests, the system must
be in the quiescent state (radio off and intercom in the
standby mode).

2. Pressing the MEMORY SET key will end the current
diagnostic test.

3. The current diagnostic test will end after one minute of
inactivity.

NOTE: An incorrect control line voltage caused by miswiring
or a defective remote station may prevent the unit from entering
the diagnostic mode. This condition, however, can
be circumvented by first placing all station selector switches
into the OFF mode and then disconnecting CN701 from the
terminal board. The voltage on the control line can then be
measured by activating the control line voltage test mode and
then reconnecting CN701.

1. MASTER STATION’S KEYBOARD TEST – Verifies that
all keys on the master station are functioning properly.
To Activate: Press and HOLD

1. ▲ key

2. ▼ key

3. MEMORY 1 key.
In this mode the hours in the display represent the current
diagnostic test and the minutes indicate the current key
being pressed. The following will be displayed as each key
is pressed.

2. CONTROL LINE VOLTAGE TEST – Displays the voltage
on the control line.
To activate: Press and HOLD

1. ▲ key

2. ▼ key

3. MEMORY 2 key.

Example:

In this mode, the hours represent the diagnostic test,
and the minutes indicate the voltage on the control line.

The control line voltage windows for the three intercom modes
are listed above. For proper intercom operation, the control
voltage produced when an intercom key is pressed at a remote
station should fall between the voltages indicated.

NOTE: Pressing END CALL, DOOR TALK or INSIDE/PATIO
keys at the master station will not change the voltage on the
control line.

If a remote station does not produce a voltage within the above
windows for a specific intercom function, check the following:

• Make sure all connectors from the master station are properly

installed into the terminal PC board.

• Check IWA-3 connections at the terminal PC board and at

each remote station.

• Confirm that the suspect remote speaker station functions

properly by replacing it with a known good Remote Station.

3. DISPLAY TEST – Displays all of the segments in the display.
To Activate: Press and HOLD

1. ▲ key

2. ▼ key

3. MEMORY 3 key

Pressing the ▲ key toggles the display on and off.

Diagnostic Tests

KEY DISPLAY

No key pressed 1:00
SCAN 1:01

▲

1:02

▼ 1:03

PROGRAM OFF 1:04
AM 1:05
FM 1:06
CD/TAPE 1:07
AUX 1:08
TIMER 1:09
INSIDE/PATIO 1:10
DOOR TALK 1:11
END CALL 1:12
MEMORY 1 1:13
MEMORY 2 1:14
MEMORY3 1:15
MEMORY 4 1:16
MEMORY 5 1:17
MEMORY 6 1:18
TIME SET 1:19
HOUR 1:20
MIN 1:21
MEMORY SET

1:22

VOLTAGE ON

DISPLAY CONTROL LINE

2:34 3.4 volts
2:17 1.7 volts
2:06 .6 volts

VOLTAGE WINDOW

MODE MAX MIN

End Call 4.5V - 2.4V
Door Talk 2.4V - 1V
Inside/Patio 1.0V - 0

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