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RADIO FREQUENCY FILTER (FLI)
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TM-5-4120-359-14 Air Conditioner Split Package 18 000 BTU/HR Cooling 30 000 BTU/HR Heating 208 Volt 3 Phase 400 Hertz Manual
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EMI SCREENS
TM 5-4120-359-14
a. Removal
(1) Using screwdriver, remove eight screws from the outside edges of the front cover, while supporting (holding)
cover.
(2) Carefully slip front cover out and down so that the radio frequency filter can be supported (held) while it is
removed.
(3) Using screwdriver, remove four screws from the radio frequency filter. The protective cap and cover for the
electrical connectors will come off when the two top screws are removed. Take care that they are not lost.
(4) Sit the filter down on the inside of the evaporator housing. Take care that the EMI filter gasket is not
damaged or lost.
(5) Using a screwdriver, socket and ratchet, remove the four screws and lock nuts from the remote control
harness connector (J7).
(6) Remove the connector (J7) harness and connector gasket from the back side of the cover. Take care that the
connector gasket is not lost.
(7) Slide the radio frequency filter out and disconnect the P8 plug and harness from the back side of the filter.
b. Inspection
(1) Check the radio frequency filter housing for physical damage such as dents, punctures, cuts, and ruptured
seams. Replace if damaged.
(2) Look for evidence of overheating. Replace if overheating is indicated.
(3) Check that connectors are secure and contacts are tight and not damaged. Replace if connectors or contacts
are loose or damaged.
(4) Check that EMI filter gasket is in good condition. Replace if damaged.
c.
Testing. Using figure 4-10, continuity test the filter. Replace if found bad.
Figure 4-10. Radio Frequency Filter (FLI) Internal Diagram
4-43

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