M&S Systems dmc3-4 - If the CD will Not Eject the Cartridge; If Intercom Buttons Don’t Function Properly; If There Is no Radio or Intercom Audio

·
Reduce intercom volume.
If the CD will not eject the cartridge:
·
Check that there are no room station cables or other wires routed behind the
mechanism in the CD cha
ssis.
·
Make sure that the CD chassis and plastic faceplate is installed correctly.
·
Check that the CD
eject
PCB is plugged into the mechanism.
If intercom buttons don’t function properly:
·
Check that intercom switches are not in th
e “OFF” position.
·
Check that room station and patio connectors are terminated
correctly.
·
Check for shorts or opens on intercom station cable runs.
·
Check for shorts or opens on chime module and door station
cable runs. (Continuous chi
me will lock up the master.
See System
Diagnostics.)
·
Reset master unit by inserting a paperclip in the reset hole,
which is located behind the door.
·
Check that there are not a lot of excess room station cables run
behind the master. Bulk
y wire may cause master circuit boards to
compress against each other and trigger the buttons
.
·
Check the total length of run isn't above 350' or system over
1000' total
If there is no radio or intercom audio:
·
Check that room switches are
not in the “OFF” or “MONITOR”
position.
·
Check that volume settings and controls are set properly. (See
AUDIO SETTINGS)
·
Make sure the “SOURCE” selection is correct.
·
Check for shorts or opens on intercom station cable runs.
·
Check that room station and patio connectors are terminated
correctly.
·
Reset master unit by inserting a paperclip in the reset hole,
which is located behind the door.