Mitsubishi Electric MUFZ-KJ-NAHZ Series Service Manual page 37

OPERATING PROCEDURE
3. Removing the electronic control P.C. board and
the display receiver P.C. board
(1) Remove the panel. (Refer to 1.)
(2) Remove the electrical box. (Refer to 2.)
(3) Remove the earth wire connected to the electronic
control P.C. board.
(4) Disconnect all the connectors on the electronic con-
trol P.C. board.
(5) Pull out the electronic control P.C. board from the
electrical box.
(6) Disengage the catches on the lead guide.
(7) Disengage the display receiver P.C. board holder from
the catch on the electrical box.
(8) Open the display receiver P.C. board holder and pull
out the display receiver P.C. board.
Attaching the connectors
Run the lead wires with the connectors as they were
before the disassembly.
4. Removing the nozzle assembly
(1) Remove the panel. (Refer to 1.)
(2) Rotate the display receiver P.C. board holder to the
right side and disconnect the vane motor relay con-
nector.
(3) Remove the fixed screws on the both sides of the
nozzle.
(4) Disengage the catches on the nozzle from the box.
(5) Hold the both sides of the nozzle. Rotate the nozzle
toward you around the right and left ribs to remove it.
Photo 7
Photo 8
Catches on the display
receiver P.C. board holder
Catches on
the lead guide
Lamp cover
Display receiver
P.C. board
37
PHOTOS
Photo 4
Photo 5
Fan motor
connector CN211
Photo 6
Earth wire connect to
the heat exchanger
Earth wire
connect to the
indoor electronic
control P.C. board
Indoor coil
thermistor
connector CN112
Display receiver
P.C. board
connector CN1J1
Vane motor
Connector CN151
Screw of the
electrical box
Vane motor relay
connector
Catch on the dis-
play receiver P.C.
board holder and
the electrical box
Display receiver
P.C. board