Removing The Indoor Terminal P.c. Board; Removing The Electrical Box - Mitsubishi Electric MSZ-FT25VG-E1 Service Manual

OPERATING PROCEDURE
2. Removing the indoor terminal P.C. board, indoor
electronic control P.C. board, the display P.C.
board, the switch/buzzer P.C. board, the receiver
P.C. board, and the electrical box
<Removing the electrical box>
(1) Remove the panel (Refer to section 1.)
and the corner box right .
(2) Remove the screw of the V.A. clamp.
Remove the V.A. clamp and the indoor/outdoor connect-
ing wire.
(3) Remove the screws of the electrical cover and earth-
plate.
(4) Remove the connectors of the indoor coil thermistors
CN112 from the indoor electronic control P.C. board.
Remove the wires of the indoor coil thermistor from the
water cover.
(5) Remove the water cover.
(6) Remove the following connectors from the indoor elec-
tronic control P.C. board:
CN151 (Vane motors)
CN211 (Fan motor)
(7) Remove the upper catch of the electrical box, and pull
out the electrical box.
To attach the electrical box, pass the wires connecting
the display P.C. board, the switch/buzzer P.C. board,
the receiver P.C. board, and the indoor electronic con-
trol P.C. board through A. Pass the lead wires of the
fan motor through B as shown in the Photo 4.
<Removing the indoor terminal P.C. board, indoor elec-
tronic control P.C. board, the display P.C. board, the
switch/buzzer P.C. board, and the receiver P.C. board>
(8) Remove the screw of the terminal block and remove the
earth wire connected to the electrical box from the indoor
electronic control P.C. board.
(9) Remove the lead wires from the connector CN10A.
(10) Remove the display P.C. board holder from the electrical
box.
(11) Remove the display P.C. board, the switch/buzzer P.C.
board, the receiver P.C. board and the transmitter P.C.
board.
(12) Remove the room temperature thermistor from the elec-
trical box.
Remove the indoor terminal P.C, board and the indoor
elctronic control P.C. board from the electrical box.
(13) Unhook the catches of the display P.C. board holder from
the nozzle and the electrical box (right side).
(14) Open the rear cover of the display P.C. board holder
and remove the switch board, the display board and the
receiver board.
Remove the indoor electronic control P.C. board.
OBH864
PHOTOS/FIGURES
Photo 3
Water cover Earth plate
Photo 4
Earth wire connected
to the electrical box
Screw of the
terminal block
A
37
Indoor coil ther-
mistor lead wire
Screw of the
electrical cover
Screw of the
V.A. clamp
Screws of the
earth plate
Hook
Power monitor receiver SW
P.C. board holder
Electrical box
Indoor electronic
control P.C. board
Vane motor
connector CN151
Indoor fan motor
connector CN211
Indoor coil ther-
mistor connector
CN112
Room tempera-
ture thermistor
connector CN111
CN10A
B
Room temperature
thermistor RT11