Mitsubishi Electric LGH-F300RVX2-E Handbook page 45

(4) Control parts (For LGH-F300RVX2-E to LGH-F600RVX2-E)
Precaution
Before replacing the circuit boards, see (6) Procedures for replacing the circuit boards (page 49).
[1] Remove the control box cover. → See (2) [1].
[2] Check that LED4 (red) on the control circuit board is
OFF, and then disconnect the connectors (indicated by
) from the control circuit board.
[3] Remove the screws (two PT screws 4×8, indicated by
), and remove the control circuit board.
[4] Disconnect the connectors (indicated by
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.
) from the
Cord band
Push in the
leads.
Cord bush
─ 45 ─
Control circuit board
LED4
CN14
CN19
Control circuit board
LED6
CN9 CN10
CN114
CN113
CN119
TAB1
CN12
TAB2
CN5
CN7
Power circuit board