Mitsubishi Electric PUZ-HWM140VHA Service Manual page 70

OPERATING PROCEDURE
4. Disassembling the electrical parts box
(PUZ-HWM140Y)
(1) Disconnect all the connectors on the controller circuit board.
(2) Remove the 3 screws, screw 1, 2 and 3, that fix the
plate equipped with the outdoor controller circuit board,
and the electrical parts box, screw 1 from the front and
the screw 2 and 3 from the bottom of the electrical parts
box. (See Photo 8 and 9)
(3) Slide the plate in the direction of the arrow A and remove it.
(See Photo 8)
(4) Remove the lead wires from the clamp on the bottom of
the electrical parts box. (See Photo 10)
(5) Remove the 3 screws, screw 4 and 5, that fix the bot-
tom side of the electrical parts box and remove the bot-
tom side plate by sliding in the direction of the arrow B.
(See Photo 10 and 11)
(6) Remove the noise filter circuit board. (See Photo 12)
(7) Remove the screw 6 and 7, and remove the plate that
equips the converter circuit board. (See Photo 9)
(8) Remove the converter circuit board from the plate.
(See Photo 11)
Note: When reassembling the electrical parts box, make
sure the wirings are correct.
Photo 9
Screw 2
Heat sink
Photo 11
Noise filter
circuit board
(N.F.)
OCH748
Bottom plate of
electrical parts
box
Screw 3
Electrical parts
box
B
Converter
circuit board
(CONV.B.)
Power circuit
board (P.B.)
PHOTOS/FIGURES
Photo 8
Photo 10
Screw 4
Bottom plate of electrical parts box
Photo 12 Electrical parts box
Screw 6
Noise filter circuit board (N.F.)
70
Electrical
parts box
Screw 1
Controller
circuit board
(C.B.)
A
Clamp
Screw 5
Screw 7