Mitsubishi Electric MUZ-FE09NA Service Manual page 39

OPERATING PROCEDURE
2. Removing the inverter assembly, inverter P.C. board
(1) Remove the cabinet and panels. (Refer to section 1.)
(2) Disconnect the lead wire to the reactor and the following
connectors:
<Inverter P.C. board>
CN641 (Defrost thermistor and discharge temperature ther-
mistor)
CN643 (Ambient temperature thermistor)
CN644 (Outdoor heat exchanger temperature thermistor)
CN721 (R.V.coil)
CN724 (LEV)
CN932 (Fan motor)
(3) Remove the compressor connector (CN61).
(4) Remove the screws fixing the heat sink support and the
separator.
(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 ground wire and screw of the ter-
minal 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 remove
the inverter P.C. board from the P.C. board support.
3. Removing R.V. coil
(1) Remove the cabinet and panels. (Refer to section 1.)
(2) Disconnect the following connectors:
<Inverter P.C. board>
CN721 (R.V. coil)
(3) Remove the R.V. coil.
OBH543G
PHOTOS/FIGURES
Photo 4
Screws of the heat sink
support and the separator
Photo 5 (Inverter assembly)
Heat sink Inverter P.C. board
Hook of the
P.C. board
support
Heat sink support
Hook of the P.C.
board support
Photo 6
Discharge temperature thermistor
39
Screws of the
terminal block
support and the
back panel
Screw of the
terminal block
support
P.C. board
support
Terminal
block
support
Screw of the
ground wire
Screw of the P.C.
board fixture
R.V. coil