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TROUBLESHOOTING TABLE (CONTINUED)
Trouble
There is trouble with
voice terminal lights,
speaker, or ringing.
(continued)
A voice terminal
rings constantly.
Possible Cause
Do this
If
Control unit
Cord connections
Inadequate power
supply to the control
unit
3.
4.
5.
2.
Go to the control unit and
the trouble still occurs
locate the intercom jacks for
both the malfunctioning and
working voice terminals.
Unplug both from the control
the trouble no longer occurs
unit, and replug both into the
other’s jack. See if the trou-
ble occurs on the working
voice terminal.
Replace each cord, one at a
the trouble still occurs
time, and test the malfunc-
tioning voice terminal.
the trouble no longer occurs
Unplug some of the ac-
the trouble remains
cessories connected to your
system.
the trouble no longer occurs
Voice terminal T/P
Check the position of the T/P
it is set at either T or P
switch is not set in
switch.
center position
it is in the center position
All voice terminals
Control unit
Check the green power light
the green power light is on
have no lights and
on the control unit.
no dial tone.
the green power light is off
Check the red warning light
the red warning light is off
1.
on the control unit.
the red warning light is on
Then
the problem is caused by your con-
trol unit. Call your equipment sup-
plier for assistance.
the trouble is caused by one of the
cords running to the malfunctioning
voice terminal. Go to step 4.
the cause is inadequate power to
the control unit Go to step 5.
you’ve found the faulty cord.
the problem is caused by your con-
trol unit or the building wiring. Call
your equipment supplier for
assistance.
you need one or more Voice Ter-
minal Power Supply units. Refer to
“Installing Accessories,” page 19.
Call your equipment supplier. Leave
accessories unplugged until you
have the necessary power.
slide it to the center position.
your voice terminal is faulty.
Unplug it from the modular jack
and contact your equipment sup-
plier for assistance.
go to step 2.
go to step 4.
go to step 3.
go to step 4.
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