dmc1 & dmc3-4 System Troubleshooting
If there is “No Power” on the unit—it will not power up:
·
Check that the circuit breaker at the electrical box is on.
·
Check that the TE-5 transformer is connected correctly. (Brown
to Yellow 16-18 VAC, Blue to Red 16-18 VAC)
·
Check the fuses on the back of the master unit. Replace if
necessary (Radio Shack Part #270-1065).
·
Reset master unit by inserting a paperclip in the reset hole,
which is located behind the door.
If the radio reception is poor:
AM
· Check that AM antenna is installed in accordance with finish out
instructions, and connected to tuner module.
· Check that TE5 transformer is properly grounded.
· Check that ribbon cable from tuner to circuit board is seated
properly.
· Possible defective master.
FM
· Check that FM antenna is installed in accordance with finish out
instructions, and connected to tuner module.
· Check that ribbon cable from tuner to circuit board is seated
properly.
· Possible defective master.
If feedback occurs when initiating talk or listen:
· Check that intercom stations are not installed back to back or in
the same wall cavity.
· Check that intercom stations are not installed within 10 feet of
each other.
· Check for shorts on intercom station cable runs.
