NuTone IMA-3033 Series Master Station installation instructions Installers Troubleshooting Guide

INSTALLER'S TROUBLESHOOTING GUIDE

TROUBLE	POSSIBLE CAUSE	POSSIBLE REMEDY
No radio, no intercom.	No electrical power.	Be certain 120VAC, 60Hz power has been provided to the primaries of
(No Display).		both 301T Transformers. No less than 16VAC should be measured on
		the secondary of either Transformer.
	Defective transformer.	Replace transformer.
No radio, intercom working.	Faulty Master Station.	Isolate Master Station from installation by removing ribbon cables from
(AM/FM indicator on.).		terminal board and wait one minute for timeout. With power on, radio
		should be playing at Master. If no radio, Master is probably faulty. If
		radio plays, reconnect ribbon cables.
	Installation problem.	Check terminal board for shorted terminals or miswired cables.
		Remove one 3-wire cable at a time to locate faulty line. When radio
		comes on, check speaker connections and run continuity check of
		speaker wiring.
	Antenna problem.	Check for shorted antenna connection. Remove antenna connector
		from tuner board and touch each pin with metallic object. If radio plays,
		antenna is not functioning; be sure it is installed properly. In weak
		signal areas, an outside antenna may be necessary. Also see
		Connecting Auxiliary AM Antenna
Low or distorted radio	Incorrect volume setting.	Follow “Setting Volume” instructions under OPERATIONAL
volume.		CHECKOUT.
Low or no intercom volume	Improper operation.	Be sure remote speaker set for MONITOR has its volume control set
from remote speaker in		between 1⁄2 and max, and receiving speakers have volume controls set
MONITOR mode.		between 1⁄2 and max. Follow “SETTING VOLUME” instructions in
		Operation Checkout.
	Program and Intercom Volume	Follow these instructions whenever the radio tends to overpower
	Control adjustment.	transmissions from a remote speaker in the MONITOR mode. These
		instructions will help you get the proper balance between the radio and
		the monitored speaker.
		1. Set system volume control to midpoint.
		2. Set master to CD/TAPE or AUX position.
		3. Adjust volume control for each remote station and speaker in
		master station 3⁄4 position.
		4. Set master to AM or FM and tune to a strong AM or FM station.
		5. Adjust program volume control for a desired listening level.
		6. Increase Intercom volume control setting. Adjust clockwise to
		desired monitor volume.
System squeals when using	Shorted wire on master or	Check for short between terminals or loose wire.
intercom.	remote terminal board.
	Two or more Remote Stations on	Make separate cable (IWA-3) runs from each Remote Station to the
	same wire run to Master.	Master.
	Speakers in adjacent rooms	If speakers are mounted directly back to back, one speaker will have to
	mounted on common wall, or	be relocated. If speakers are in a common wall, try placing fiberglass
	mounted back to back.	insulation behind each speaker, or isolate the speakers from the wall
		by placing rubber washers or weather stripping between speaker and
		wall.
	Improper wire used in	NuTone Model IWA-3-conductor, flat-ribbon cable must be used.
	installation.
	Improper double connections	Follow “Connecting the Remote Speaker Wiring” under
	of Remote Stations on terminal	INSTALLATION.
	screws 1, 2, 6 & 7.

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