Mitsubishi Electric QUHZ-W40VA, Руководство по обслуживанию

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GHH15010
25
PHOTOS
QUHZ-W40VA
DISASSEMBLY PROCEDURE
2. How to remove the inverter control board (INV P.B ASSY)
inverter control board
(INV P.B ASSY)
Photo 2-1
Photo 2-2
Photo 2-4
Photo 2-5
Photo 2-6
Photo 2-3
(1) Referring to 1., remove the valve cover, service panel, top
panel, front panel, and condenser net.
(2) Remove the insulator and the two claws to remove the
inverter control board cover. (Photo 2-1)
(CAUTION)
The main circuit (electrolytic condenser) of the inverter
control board sometimes remains charged for a while after
the circuit breaker is turned off. So, bring the side that is
inserted into the power outlet of the soldering iron (approx.
40 W) into contact with the main circuit voltage
measurement/discharge points as shown in the figure to
completely discharge (to 10 VDC or less) the condenser .
Note, however, that electronic control type soldering irons
cannot be used for discharging work. (Photo 2-2,2-3)
inverter control
board cover
Insulator
Claw
Main circuit voltage
measurement/discharge
points (both ends of C62)
lead wire
for fan motor
inverter control
board cover
propeller fan screw D
screw E
screw C
clamper B
Hook A
(3) Disconnect the lead wire for fan motor from hook A and
clamper B, and remove screws C, D and E.
Disconnect all connectors and leads from the board, and
remove the inverter control board together with the board
cover. (Photo 2-4,2-5,2-6)