Disassembling The Electrical Parts Box - Mitsubishi Electric PUHZ-SW75VHA Service Manual

From the previous page.
OPERATING PROCEDURE
(6) Remove the terminal cover and disconnect the compres-
sor lead wire.
(7) Remove 2 electrical parts box fixing screws (4 × 10) and
detach the electrical parts box by pulling it upward. The
electrical parts box is fixed with 2 hooks on the left and 1
hook on the right.

4. Disassembling the electrical parts box

(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 4-1 and 4-2)
(3) Slide the plate in the direction of the arrow A and remove it.
(See Photo 5)
(4) Remove the lead wires from the clamp on the bottom of the
electrical parts box. (See Photo 4-3)
(5) Remove the 3 screws, screw 4 and 5, that fix the bottom
side of the electrical parts box and remove the bottom side
plate by sliding in the direction of the arrow B.
(See Photo 4-3 and 4-4)
(6) Remove the noise filter circuit board from the electrical
parts box. Then remove the 2 screws, screw 6 and 7, that
fix the plate equipped with the noise filter circuit board and
converter circuit board. (See Photo 4-5)
Note: When reassembling the electrical parts box, make
sure the wirings are correct.
Photo 4-2
Screw2
Heatsink
Photo 4-4
Noise filter
circuit board
(N.F.)
OCH533A
Bottom plate of
electrical parts
box
Screw3
Electrical parts
box
B
Converter
circuit board
(CONV.B.)
Power circuit
board (P.B.)
PHOTOS & ILLUSTRATION
Photo 3-2
Photo 4-1
Photo 4-3
Screw4
Bottom plate of electrical parts box
Photo 4-5
Screw6
Noise filter circuit board (N.F.)
75
Electrical
parts box
Electrical parts
box fixing screw
Electrical
parts box
Controller
circuit board
(C.B.)
A
Clamp
Electrical parts box
Screw1
Screw5
Screw7