Mitsubishi MSZ-HJ25VA Service Manual page 33

OPERATING PROCEDURE
2. Removing the indoor power P.C. board and the
electrical box
(1) Remove the panel. (Refer to 1.) Remove the right corner
box.
(2) Disconnect the following connectors:
<Indoor electronic control P.C. board>
CN151 (Vane motor)
CN112 (Indoor coil thermistor)
CN10A (To the indoor power P.C. board)
(3) Unhook the catch on the left side of the control P.C.
board holder. Pull the control P.C. board holder as if
opening the door at 90 degrees. Remove the control P.C.
board holder from the axial rod on the electrical box.
(4) Remove the screw of the V.A. clamp.
(5) Remove the V.A. clamp and the indoor/outdoor connect-
ing wire.
(6) Remove the earth wire connected to the indoor heat
exchanger from the electrical box.
(7) Remove the screw of the electrical cover and remove the
electrical cover.
(8) Disconnect the following connectors:
<Indoor power P.C. board>
CN211 (Indoor fan motor)
CN201, TAB1, TAB2 (Terminal block)
CN20A (To the indoor electronic control P.C. board)
(9) Remove the upper catch of the electrical box, and pull
out the electrical box.
To attach the electrical box, pass the wires connecting
the indoor power P.C. board and the indoor electronic
control P.C. board through A. Pass the lead wires of the
fan motor through B as shown in the Photo 3.
OBH647C
Photo 2
Indoor electronic control
P.C. board
Photo 3
TAB2 (Terminal block)
TAB1 (Terminal block)
33
PHOTOS
Earth wire
Screw of the
electrical cover
Screw of the
V.A. clamp
Vane motor
connector CN151
Indoor coil ther-
mistor connec-
tor CN112
Connector CN10A
(To indoor power
P.C. board)
Control P.C. board holder
Electrical box
Terminal block
connector CN201
Indoor fan motor
connector CN211
Connector CN20A
(To indoor elec-
tronic P.C. board)
Power P.C. board