Mitsubishi Electric LGH-F300RVX2-E Handbook page 41

(1) Turning power off
[1] Shut down the unit.
[2] Turn off the power supply isolator.
Precaution
When servicing, power supply to M-NET must be
turned off. Live-line working may cause a circuit
board failure.
( 2 ) Fan parts
[1] Remove the black screws (three special screws 4×8,
indicated by ) to remove the control box cover.
For LGH-F940RVX2-E and LGH-F1200RVX2-E
See (5) [1] (on page 48) for removing the control
box cover.
[2] Check that LED4 (red) on the circuit board is OFF, and
then disconnect the motor connectors (CN9, CN10,
indicated by ) from the power circuit board.
Precaution
When disconnecting the motor connectors, make
sure that the power supply is turned off and
all LEDs are unlit. Even when the fan motor is
stopped, disconnecting the live-line connectors
will cause a motor malfunction.
Assembly precaution
After connecting the
motor connectors
(CN9, CN10), check the
wiring inside the main
unit.
Push in the motor
leads until their cord
bands touch the cord
bush.
[3] Remove the black screw (one special screw 4×8, indi-
cated by ) for the fix piece.
Cord band
Push in the
leads.
Cord bush
─ 41 ─
QR code
CN9
Power circuit board
Fix piece
Control box cover
LED4
CN10
Control circuit board