Mitsubishi Electric MUZ-EF25VE - E1 Service Manual page 50

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>
CN721 (R.V. coil)
CN931, CN932 (Fan motor)
CN641 (Defrost thermistor and discharge temperature ther-
mistor)
CN643 (Ambient temperature thermistor)
CN644 (Outdoor heat exchanger temperature thermistor)
CN724 (LEV)
(3) Remove the compressor connector.
(4) Remove the screws fixing the heat sink support and the sep-
arator.
(5) Remove the fixing screws of the terminal block support and
the back panel.
(6) Remove the inverter assembly.
(7) Remove the screw of the earth wire, screw of the P.C. board
cover and screws of the terminal block support.
(8) Remove the heat sink support from the P.C. board support.
(9) Remove the screw of the inverter P.C. board and the inverter
P.C. board from the P.C. board support.
3. Removing R.V. coil
(1) Remove the cabinet and panels. (Refer to 1.)
(2) Disconnect the following connector:
<Inverter P.C. board>
CN721 (R.V. coil)
(3) Remove the R.V. coil.
OBH590B
Photo 3
Screw of the heat sink
support and the separator
Photo 4
Heat sink
P.C. board
support
Screw of
the inverter
P.C. board
Screw of the
earth wire
Photo 5
50
PHOTOS
Screw of the terminal
block support and the
back panel
Heat sink
support
Screw of the
P.C. board
cover
Screws of the
terminal block
support
Screw of the
R.V. coil
Brazed
parts of
4-way
valve