Mitsubishi Electric MUZ-DW25VF-E1 Service Manual page 50

OPERATING PROCEDURE
2. Removing the inverter assembly, inverter P.C.
board
(1) Remove the cabinet and the panels. (Refer to section 1.)
(2) Disconnect the lead wire to the reactor and the follow-
ing connectors:
<Inverter P.C. board>
CN721 (R.V. coil)
CN931, CN932 (Fan motor)
CN641 (Defrost thermistor and discharge temperature
thermistor)
CN643 (Ambient temperature thermistor)
CN644 (Outdoor heat exchanger temperature thermistor)
CN724 (Expansion valve coil)
(3) Remove the compressor connector (CN61).
(4) Remove the screw fixing the heat sink support and the
separator.
(5) Remove the screw fixing the P.C. board support and
the motor support.
(6) Remove the inverter assembly.
(7) Remove the screws of the earth wire and the terminal
block support.
(8) Remove the screw of the earth wire.
(9) Remove the screw of the terminal block and remove
the terminal block.
(10) Remove the heat sink support from the P.C. board
support.
(11) Unhook the catch of the inverter P.C. board and
remove the inverter P.C. board from the P.C. board
support.
3. Removing the R.V. coil
(1) Remove the cabinet and the panels. (Refer to section 1.)
(2) Disconnect the following connectors:
<Inverter P.C. board>
CN721 (R.V. coil)
(3) Remove the R.V. coil.
Photo 6
Screw of
R.V. coil
OBH906A
R.V. coil
PHOTOS/FIGURES
Photo 4
Screw of the heat
Screw of the P.C. sink support and
board support and the separator
the motor support
Soundproof felt
Photo 5 (Inverter assembly)
Heat sink
Heat sink
support
Inverter
P.C. board
50
Screws of the terminal
block support and the
back panel
Screw of
the back
panel
P.C. board
Terminal block
support
support
Screws of the earth wire and
the terminal block support