Mitsubishi MJ-EZ6CX-S1-IT Service Manual page 19

Does the rotor
motor stop in the
middle of operation?
NO
Does the dryer fan motor rotate?
YES
Does the heater warm up?
YES
YES
Check the photo interrupter.
Follow "8) Rotor Motor Rotation
Monitor Display" to check if each
lamp lights up.
OK
NO
Does the dryer fan rotate smoothly?
( When rotate it with your hand,
does the dryer fan touch the cover
or something else?
YES
Check if there is no disconnection or
contact failure of the connector ( P5 ) and
connector pin of power control board.
OK
Check the continuity of the
dryer fan motor.
Normal:Between the pin1and pin4
370-405Ω
Abnormal:Between pin1and pin4
Open or short
OK
NO
Check if there is no disconnection or
contact failure of the connector ( P4 ) and
connector pin of power control board.
OK
Check the continuity of the
heater. ( P4 connector )
Normal : Between pin1 and pin4
180-200
Ω
Between pin4 and pin7
180-200
Ω
Abnormal : Between the same pins
open or short
OK
Check if there is no disconnection
or contact failure of the connector
( P2 ) and connector pins of the
power control board.
OK
Check the resistance of the
heater fuse.
Normal : short
Abnormal : open
OK
Check if there is no disconnection
or contact failure of the connector
( P13 ) and connector pins of the
operation control board.
OK
Check the resistance of the
heater thermistor.
Normal :180k -500k
Ω Ω
Abnormal : open or short
OK
NG OK
Replace the photo interrupter.
NG
OK
Replace the power control board.
When the dryer fan touches
OK
NO
the cover, the fan is not fully
pushed into inside.
NG
Push the dryer fan forward
OK
( to the bump of the stopper ) .
Insert the connector and
NG
connector pin securely.
OK
NG OK
Replace the rotor motor.
NG
OK
Replace the power control board.
Insert the connector and
NG
connector pin securely.
OK
Insert the connector and
NG OK
connector pin securely.
NG
OK
Replace the power control board.
NG
Replace the operation
OK
control board.
NG Insert the connector and
connector pins securely.
OK
NG
OK
Replace the heater fuse.
NG
OK
Replace the power control board.
NG
OK
Replace the operation control board.
Insert the connector and
NG
connector pins securely.
OK
NG
OK
Replace the heater thermistor.
NG
OK
Replace the operation control board.
NG
OK
Replace the power control board.
19