Mitsubishi Electric MXZ-2C20NA2 Service Manual page 146

OPERATING PROCEDURE
2. Removing the outdoor control P.C. board, the reac-
tor, the outdoor power P.C. board, and the heatsink
(1) Remove the top panel and the service panel (Refer to
section 1).
(2) Disconnect the power supply cord and indoor/outdoor
connecting wires.
(3) Disconnect the wire-to-wire connector of the compressor
lead wire (Photo 4).
(4) Disconnect all the connectors on the outdoor control P.C.
board.
(5) Remove the releasable cable tie securing the lead wires
of core, TBE1, CNTH2, and CNAC2 (Photo 4).
(6) Remove all the screws fixing the outdoor control P.C.
board holder (Photo 4).
(7) Remove the lead wires of TBE1, CNTH2, and CNAC2
from the right hook on the top of the outdoor control P.C.
board holder (Photo 4,
(8) Remove the lead wires of CN151 and CN152 from the left
hooks on the top and the bottom of the outdoor control
P.C. board holder (Photo 4,
(9) Remove the outdoor control P.C. board holder.
(10) Disengage all the catches of the outdoor control P.C.
board holder, and remove the outdoor control P.C. board
(Photo 6).
(11) Disconnect all the lead wires from the reactor (Photo 7).
(12) Remove all the screws fixing the reactor, and remove the
reactor (Photo 7).
(13) Remove all the lead wires from the clamps on the separa-
tor (Photo 8).
Lead wire
Photo 4
of CNDC
NOTE: These
lead wires
are hooked
from front to
back
Lead wire
of CNF1
Photo 5
Left hook on the bottom
of control P.C. board
(CN151, CN152)
OBH702N
).
and 5).
Releasable
cable tie
Screws of
the outdoor
control P.C.
board holder
Lead wires of
CN791, CN792,
CN793, CN794,
CNTH1, CN63H,
CN712
Connector of
the compressor
lead wire
PHOTOS/FIGURES
Photo 6
Catches of the
outdoor contol
P.C. board holder
Photo 7
Screws of the reactor
Photo 8
Separator
Lead wires of
CN151, CN152
Lead wire of
the compressor
146
Lead wire of
TAB6 (White) (NA, NA2, NA3)
TB3B(Black) (NA4)
Lead wire of
TAB3 (Red) (NA, NA2, NA3)
TB1A(Red) (NA4)
Lead wire of
TAB4 (White) (NA, NA2, NA3)
TB3A(Black) (NA4)
Lead wire of
TAB5 (Red) (NA, NA2, NA3)
TB1B(Red) (NA4)
Lead wires of
TAB4, TAB5 (NA, NA2, NA3)
TB3A, TB1B (NA4)
Clamps