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TROUBLE
No radio, no intercom.
(No Display).
No radio, intercom working.
(AM/FM indicator on.).
Low or distorted radio
volume.
Low or no intercom volume
from remote speaker in
MONITOR mode.
System squeals when using
intercom.
No electrical power.
Defective transformer.
Faulty Master Station.
Installation problem.
Antenna problem.
Incorrect volume setting.
Improper operation.
Program and Intercom Volume
Control adjustment.
Shorted wire on master or
remote terminal board.
Two or more Remote Stations on
same wire run to Master.
Speakers in adjacent rooms
mounted on common wall, or
mounted back to back.
Improper wire used in
installation.
Improper double connections
of Remote Stations on terminal
screws 1, 2, 6 & 7.
Be certain 120VAC, 60Hz power has been provided to the primaries of
both 301T Transformers. No less than 16VAC should be measured on
the secondary of either Transformer.
Replace transformer.
Isolate Master Station from installation by removing ribbon cables from
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.
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.
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
Follow “Setting Volume” instructions under OPERATIONAL
CHECKOUT.
Be sure remote speaker set for MONITOR has its volume control set
between
1
⁄2 and max, and receiving speakers have volume controls set
between
1
⁄2 and max. Follow “SETTING VOLUME” instructions in
Operation Checkout.
Follow these instructions whenever the radio tends to overpower
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.
Check for short between terminals or loose wire.
Make separate cable (IWA-3) runs from each Remote Station to the
Master.
If speakers are mounted directly back to back, one speaker will have to
be relocated. If speakers are in a common wall, try placing fiberglass
insulation behind each speaker, or isolate the speakers from the wall
by placing rubber washers or weather stripping between speaker and
wall.
NuTone Model IWA-3-conductor, flat-ribbon cable must be used.
Follow “Connecting the Remote Speaker Wiring” under
INSTALLATION.
POSSIBLE CAUSE POSSIBLE REMEDY
INSTALLER'S TROUBLESHOOTING GUIDE