LG WD-P1411RD6 Service Manual ▷ View online
46
9-3. STATOR ASSEMBLY
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The DD motor can be driven from stopped to maximum speed in infinite steps in
either direction.
There are 36 poles on the stator; 12 permanent magnets spaced around the rotor.
There are no brushes to wear out. Unlike a more traditional brushless motor, the
rotor surrounds the stator rather than being attached to it.
Test Points
Result
(1) to (2)
(2) to (3)
(3) to (1)
(2) to (3)
(3) to (1)
5-15 9
5-15 9
5-15 9
5-15 9
5-15 9
.
./.
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+$,
47
Test point
and
Result
(Hall
Sensor)
The hall sensor determines the speed and direction of the motor.
It also can read that the load is off balance when the drum speed fluctuates.
- Voltage Testing Hall Sensor at Stator
If measuring voltage from the Main PCB Assembly to the Hall Sensor,use the
following steps:
1. Unplug power cord.
2. Remove rear washer panel.
3. Locate Hall sensor connector on the stator behind the rotor.
4. Place meter leads on terminals 5 to 4,white to gray.
5. Plug in power cord,close door,and press power button.
DO NOT PRESS START!
6. You should measure 10 to 15 Vdc. If 10 to 15 Vdc is present,control board,
white wire,and gray wire are OK! If not follow testing output voltages on control
board in next section.
(1) (3) (5)
(2) (4)
48
Test Point
and
Result
(Hall
Sensor)
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% % 0 1!
2 3 % # 4
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5 % ! % % & 65 3 % # 4
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% 5
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7
% % 1! % %
! ! 2
3 4
% % 1!
% %
! ! 2 3 4
65 % %%
3 4
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9 % 3 %) % %
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%
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=
0
5
%%!
- Voltage Testing Hall Sensor from the Main PCB Assembly
/ %% % 5 % )
5! %%
% % % ) ! '
! %% % % !
2 3 4
65 3 4
5 % )
%
) % % %% % % !
2 3 4
5 % !
7 65 3 4
5 % % ) +8. 65 %
%% %% ! 9 % 3 4
% %
; < %
=! 5
% *
%
!
=
% 5! 5 5 %
% %
; < % ;<
; < % ;<
; < % ;<
;< % ;<
;< % ;<
; < % ;<
; < % ;<
;< % ;<
;< % ;<
%
7> =9
7> =9
7> =9
3> # 4
3 4
3 4
3 4
=
4 % 6%
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(2)
(1)
(4)
(3)
49
9-4. PUMP MOTOR ASSEMBLY
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* Each circuits of loads in wiringdiagram are all same.
Two pump motors are used to drain the tub and to circulate the water / detergent solution.
"
Test Points
Result
(1) to (2)
10-20 9
,
-.
-.
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-.
-.
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