Carrier MMY-MAP0724FT9UL Service Manual page 252

(3) Disconnect all the connectors and fast-on terminals used to connect wiring to the noise filter P.C. board.
9
• The line filter ( ) and its leads, both connected to the screw-on terminals (
(A) will be removed in step 6.
• Disconnect all the connectors and fast-on terminals.
(4) Remove the earthing screws (
• The removed earthing screws (
keep them in a safe place.
(5) Remove the noise filter P.C. board assembly by unlocking the four card edge spacers used to secure the
7
P.C. board ( ).
(6) Remove the line filter (
noise filter P.C. board (A), and reinstall them on the service P.C. board (A) by firmly connecting them to the
screw-on terminals (
Line Filter installation:
Screw the line filter and the connecting wires together to the terminals as below.
The torque of 6 screws of the line filter is "1.84ft•lbs (2.5N•m)".
Please check that the screws connecting the line filter are not loose.
If the screw is loose, the screw will generate heats, and cause the line filter to breakdown.
Do not use an electric driver or an air driver, as this can cause damage to the line filter.
r
Line Filte
Connect the wires according to the wiring diagram.
5 6
), ( ).
5 6
), ( ) will be reused during the installation of the service P.C. board, so
9
) and its leads, both connected to the screw-on terminals (
8
) in the same manner as before.
Red White
Red
White
Black
Line Filter
Black
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8
) of the noise filter P.C. board
8
) of the just-removed
Connecting Wire
Terminal
Connecting Wire
Terminal