User's Manual

Innovator CU0TD-1/CU0RD-1 – CU4TD/CU4RD Unpacking, Installation &
ATSC Transmitter/Regenerative Translator Maintenance
Instruction Manual, Rev. 2 32
Maintenance
The Innovator CX Transmitters are designed with components that require little or no
periodic maintenance, except for the routine cleaning of air intakes, fans and module front
panels as well as the periodic check of general tightness of hardware.
It is recommended that periodically (the time interval depends on the amount of
movement the cabinet receives) all mounting hardware, holding drawer slides, shelving
and mounting plates inside the cabinet are checked for tightness. All screws and bolts
that are accessible should be tightened initially when the transmitter is received and
periodically thereafter if the transmitter is moved by vehicle. All coaxial connectors, hard-
line connections and hardware holding combiners, splitters, or any other mounted items
should be checked and tightened.
The amount of time between cleanings of the drawers and cabinets depends on the
conditions within the transmitter room. While the electronics have been designed to
function even if covered with dust, a heavy buildup of dust, dirt, or insects will affect the
cooling of the components. This could lead to a thermal shutdown or the premature
failure of the affected drawer. When the front panels of the drawers become dust
covered, the drawer should be pulled out and any accumulated foreign material should be
removed.
NOTE: To remove a drawer from the cabinet, the input and output cables must be
removed from the rear (and/or front) of the transmitter before the drawer can be pulled
out completely from the cabinet.
A vacuum cleaner, utilizing a small, wand-type attachment, is an excellent way to suction
out any dirt from the drawer and cabinet. Alcohol and other cleaning agents should not
be used unless you are certain that the solvents will not damage components or the silk-
screened markings on the drawers and boards. Water-based cleaners can be used, but do
not saturate the components. The fans and heatsinks should be cleaned of all dust or dirt
to permit the free flow of air for cooling purposes.
It is recommended that the operating parameters of the transmitter be recorded from
the LEDs and the LCD system metering on the front panel of the drawer at least once a
month to be used for comparison purposes in case of a failure. It is suggested that this
data be retained in a rugged folder or envelope and stored near the transmitter.