10
INSTALLER'S TROUBLESHOOTING GUIDE
Hum in remote stations.
A selective intercom call cannot be
made.
No intercom or music from the
remote stations.
No door communication.
The music volume is too loud when
the remote stations are set on the
first volume step.
The music volume is distorted
regardless of the setting of the
remote station volume control.
Improper setting of the Radio
Volume trimpot at the master.
Audio source's signal is too large.
Decrease the radio audio level by turning the "Radio
Volume" trimpot (counter clockwise) until the desired audio
level has been achieved with the remote stations set in their
first volume step (refer to "Setting the AUX Audio Level").
Decrease the radio audio level by turning the "Radio
Volume" trimpot (located on the master station's PC board)
counter clockwise until the audio becomes undistorted with
"Radio"(Music) volume control at the remote stations
adjusted to maximum.
Wire installation.
Speaker.
Check the continuity of the door speaker.
Follow "Setting the Door Speaker Volume Level"
instructions in this booklet. Note: This setting effects only
the audio going to the door speaker.
Incorrect door speaker volume
setting.
Check the wires at door speakers and at the master's door
terminals.
Check BLK, BLK/WHT (serial data) wires to be certain they
are properly connected to the master and each remote
station.
Defective transformer.
Replace transformer.
The intercom wiring has been run
too close to the household AC
power wiring.
Wire installation.
Interference from household
electrical fixtures.
Power transformer is located too
close to the master.
Wire installation.
Improper setting of remote station
code switch*.
Switch the power to the on position, power LED is lit.
Power switch in the master is in the
off position.
Improper wiring installation at the
master.
No electrical power to the remote
stations.
Be certain 120vAC, 60Hz power has been provided to the
primary of the 401T transformer. No less than 22vAC
should be measured on the secondary of the transformer.
Check the wiring going to the remote station connector at
the master.
Check to make sure the station code has been set at all
stations and no two stations have the same station code.
Check BLK, BLK/WHT (serial data) wires to be certain they
are properly connected to master and each remote station.
Relocate power transformer.
A dimmer or fluorescent light may cause interference.
Filters should be used for dimmer or fluorescent light
interference (G.E. 89G635 or equivalent - purchase locally.)
Check the ORN, ORN/WHT, RED, RED/WHT wires for
shorts or opens at the master and at each remote station.
Be certain the intercom wiring is as far away as practical
from the household AC power wiring. Do not run the
intercom wiring parallel to the AC power wiring.
TROUBLE
POSSIBLE CAUSE
POSSIBLE REMEDY
