Mitsubishi Electric MSZ-D30NA Service Manual page 197

OPERATING PROCEDURE
2. Removing the inverter assembly, inverter P.C. board
(1) Remove the cabinet and panels. (Refer to 1.)
(2) Disconnect the lead wire to the reactor and the following con-
nectors:
<Inverter P.C. board>
CN602 (R.V. coil) (MUZ)
CN671 (Defrost thermistor (MUZ), discharge temperature
thermistor and outdoor heat exchanger temperature
thermistor)
CN672 (Ambient temperature thermistor)
CN724 (LEV)
CN931, CN932 (Fan motor)
(3) Remove the compressor connector.
(4) Remove the screws fixing the relay panel.
(5) Remove the relay panel.
(6) Remove the ground wires and the lead wires of the inverter
P.C. board.
(7) Remove the screw of the PB support.
(8) Remove the inverter P.C. board from the relay panel.
3. Removing R.V. coil
(1) Remove the cabinet and panels. (Refer to 1.)
(2) Disconnect the following connector:
<Inverter P.C. board>
CN602 (R.V. coil) (MUZ)
(3) Remove the R.V. coil.
OBH549G
Photo 4
Inverter P.C.
board
Screws
of the PB
support
Screws of the
relay panel
Photo 5
71
PHOTOS
Screw of the
relay panel
Screws of the
PB support
Ground wires
Screw of the
R.V. coil (MUZ)
Brazed parts of
4-way valve