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NuTone Manuals
Intercom System
im-406
Service manual
Table Of Contents - NuTone im-406 Service Manual
3-twisted-pair (6-wire) built-in centralized radio intercom system
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Contents
Table of Contents
Troubleshooting
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Table of Contents
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Table of Contents
Contents
2
Wiring Specifications
3
Radio/Intercom Speaker Wiring
3
Door Speaker Wiring
3
Operational Checkout
4
Im-406 Master Unit
4
Muting
4
Intercom Operation
5
Is-48 Inside 8 Inch Speaker
5
Is-16 Inside 5 Inch Speaker
5
Door Speakers
5
Is-47 I/P Speaker/Clock Timer
6
Background Music
6
Theory Of Operation
7
Power Supply
7
Radio Module
7
Component Side
8
Foil Side
8
Audio Controls, Inputs And Outputs
9
Am Tuner
9
Alignment
9
Tuner Alignment
10
F.m. Alignment
10
Master Unit Settings
10
Instruments Required
10
A.m. Alignment
11
Dial Cord Installation
11
Cathode Ray Oscilloscope
11
Am Signal Generator
11
Audio Amplifier
13
Inside/Patio Intercom Speaker Switching And Terminal Board Connections
14
Terminal Board
15
Speaker Wiring
15
Chime/Alarm Wiring
15
Station Selector Switches S101-S110
15
Control Module
16
Inside/Patio Speakers
18
Is-47 Speaker/Clock Timer
19
Operating Voltages
20
Control Module Intercom Operation
20
6-Wire Radio/Intercom Master Unit
21
Servicing The Im-406 System
26
Removing Master Unit From Rough-In Housing
27
Exploded View Im-406 Master Unit
28
In The Field Replacement Of Control Module
29
In The Field Replacement Of Tuner Module
29
In The Field Replacement Of Terminal Board
29
Amplifier/Power Supply Module Interconnecting Wires
30
Bench Servicing The Complete Chassis Assembly
31
Replacement Of I/P And Door Talk/Listen Switches
32
Bench Checking The Chassis Assembly
32
Reassemble Master Unit
32
Troubleshooting
33
System Dead - No Pilot Lights
33
System On - No Pilot Lights
33
No Fm - Intercom, Am And Auxiliary Normal
33
Im-406 Power Supply And Muting Control Circuit
34
Modifications To Amplifier/Power Supply Module
34
Original Production Amplifier/Power Supply Foil Pattern
35
Later Production Control Module Schematic
36
Replacement Parts List
37
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