User's Manual

Innovator CU0TD-1/CU0RD-1 – CU4TD/CU4RD Unpacking, Installation &
ATSC Transmitter/Regenerative Translator Maintenance
Instruction Manual, Rev. 1 25
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 the CX series transmitter from the cabinet, the input and output cables
must be removed from the rear 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.