Trane NTXWPH A Series Service Manual page 100

OPERATING PROCEDURE
(13) Disengage all the catches of the PB cover, and remove
the PB cover (Photo 9).
(14) Remove the screw fixing the outdoor power P.C. board
and all the screws fixing the outdoor power P.C. board
and the heatsink (Photo 10).
(15) Disengage all the catches of the outdoor power P.C.
board, and lift the outdoor power P.C. board (Photo 10).
(16) While lifting the outdoor power P.C. board, disconnect
the lead wires, the connectors, and the earth wires; then
remove the outdoor power P.C. board (Photo 11).
NOTE: When reassembling, pass the lead wire of the
CN171 thorough the notch and behind the lead
wire of the compressor (Photo 12).
(17) Remove all the screws of the heatsink fixing parts and
remove the heatsink fixing parts (Photo 13).
NOTE: Some units have only 1 heatsink fixing part.
(18) Remove the heatsink.
Photo 11
Connetor of CN171
Earth wires of TBE2, TBE4
Photo 12
Notch
Lead wire of compressor
OBHT702
Lead wires of
TAB1, TAB2
Connetor
of CNAC1
Lead wire of CN171
100
PHOTOS/FIGURES
Photo 9
Catches of PB cover
Photo 10
Screw of the power
P.C. board
Screws of the power
P.C. board and the
heatsink
Photo 13
Screws of fixing parts of the heat sink
Catches of the
power P.C. board