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INSTALLER'S TROUBLESHOOTING GUIDE ( Continued )
TROUBLE
The radio volume is too loud
when the remote speakers are
set on the first volume step.
The system squeals when the
intercom is being used.
Static.
Optional Electronic Chime
(Models IA-28 or IA-29) does
not operate or operates at a
low level.
Mechanical chime can't be
heard through the master
station or remote speakers.
Call tone volume at a station
is too loud.
*
IMPORTANT: Be certain the system has been disconnected at the main power source prior to setting the selector
switch. Powering the system up will allow the station identification to be effective.
POSSIBLE CAUSE
Improper setting of the program
audio trim pot.
The speaker in the adjacent
room(s) is mounted on a common
wall (back to back).
Loose ground connection.
Interference from household
electrical fixture.
Interference from household
electrical appliances.
Wire installation.
Wire installation.
Improper volume setting.
Wire installation.
Wire installation.
Improper volume setting.
Call tone volume trimpot is not
adjusted properly.
POSSIBLE REMEDY
Decrease the radio audio level by turning the program
audio trimpot (counter clockwise) until the desired audio
level has been achieved with the remote speaker set in
their first volume step (refer to "Setting the Radio
Audio Level").
If the remote speakers have been mounted back to
back, one of them will have to be relocated. If the
speakers are on a common wall, place fiberglass
insulation behind each speaker or isolate the speaker
from the wall by placing rubber washers or weather
stripping between the speaker and the wall surface.
Check the ground connection to the master station and
the connection to the earth ground source.
A dimmer or fluorescent light may cause interference.
For dimmer or fluorescent light interference, use filters
(G.E. 89G635 or equivalent, purchase locally).
Correct interference at the source: fishtank heater, hand
tools, coffee pot, etc.
Check all wiring in the system: speaker, chime, and
transformer connections at master station and
connection at remote speakers.
Be certain the chime is properly connected to the master
station. Also, be certain the front, side and rear buttons
are properly connected to the chime board.
Adjust the volume of the chime module by turning the
volume potentiometer located on the chime module
behind the 4-pin ribbon cable connector. NOTE: It may
be necessary to remove the chime module from the
master station to make this adjustment.
Check the door terminals on the chime module by
shorting the common terminal to each of the door
terminals front, rear and side. The chime should play.
Be certain the mechanical chime is properly connected
to the master station's mechanical chime input wires
located next to the electronic chime 4-pin connector on
the audio control PC board.
Adjust the volume of the mechanical chime by turning
volume potentiometer, located on the mechanical chime
pick-up.
Refer to call tone volume adjustment in the home
owner's instructions. If volume is still not desirable refer
to tone generator adjustment on page 12. NOTE: It is
suggested that the tone generator volume not be
adjusted to the off position.
15
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