LG DWD-1074FB Service Manual ▷ View online
28
3
C
C
1C
2
NO
YES
YES
YES
NO
NO
NO
YES
(1)
3
C
C
1C
2
S P I N T R O U B L E
Check the sensor
(Pressure) or hose
(Sensor).
If the problem is on the
sensor or the hose, replace
the sensor or the hose.
(Pressure) or hose
(Sensor).
If the problem is on the
sensor or the hose, replace
the sensor or the hose.
Normal.
Correct the connector.
Replace the motor
assembly.
(4681FR1241C)
assembly.
(4681FR1241C)
Check on the spinning, is the frequency of the
water level 248 or more. The frequency can be
checked by pressing the [Option] and [Spin] buttons at
the same time on the program.
water level 248 or more. The frequency can be
checked by pressing the [Option] and [Spin] buttons at
the same time on the program.
When pressing [Spin], [Temp.] and POWER buttons
at the same time after power off, press the
START/PAUSE button 2 times, is the drum spinning
at low speed?
at the same time after power off, press the
START/PAUSE button 2 times, is the drum spinning
at low speed?
Is it disconnected, or disassembled?
~Red : 3-pin (1)₩
Check the motor connector, is the resistance of
the terminal same as the figure?
MOTOR TERMINAL
Resistance of terminal:
①~② / ②~③ / ③~① : About 6.5Ω
Replace the PWB assembly (Main).
① ② ③
■ WD(M)-8070F(H)B, WD(M)-1070(5)F(H)B, WD(M)-1170(5)F(H)B, WD(M)-1270(5)F(H)B, WD(M)-1370(5)F(H)B
WD(M)-8074F(H)B, WD(M)-1074(6)F(H)B, WD(M)-1174(6)F(H)B, WD(M)-1274(6)F(H)B, WD(M)-1374(6)F(H)B
WD-8078FHB, WD-1078FHB, WM-1171(6)FHB, WM-1371(6)FHB, WD-1271FB(B), WD-1071FB(B)
WD-8078FHB, WD-1078FHB, WM-1171(6)FHB, WM-1371(6)FHB, WD-1271FB(B), WD-1071FB(B)
29
■ WD-8070F(H), WD-1070(5)F(H)
3
2
1
1C
10C
1 2 3 4 5 6 7 8 9 10
5
4C
NO
YES
YES
YES
NO
NO
NO
YES
Check the sensor
(Pressure) or hose
(Sensor).
If the problem is on the
sensor or the hose, replace
the sensor or the hose.
(Pressure) or hose
(Sensor).
If the problem is on the
sensor or the hose, replace
the sensor or the hose.
Normal.
Reconnect or repair it.
Replace the motor
assembly.
(4681FR1194A)
assembly.
(4681FR1194A)
Check the frequency of the
water level 48 or more. The frequency can be
checked by pressing the Option and Spin
buttons at the same time.
water level 48 or more. The frequency can be
checked by pressing the Option and Spin
buttons at the same time.
Press Power button with both Spin and Temp.
buttons pressed after power off. Press Start/Pause
button 2 times. Does the drum rotate at low spin
speed?
buttons pressed after power off. Press Start/Pause
button 2 times. Does the drum rotate at low spin
speed?
Is it disconnected or badly contacted?
Natural:3-pin ( ), Red:4-pin ( ), Blue:2-pin ( ),
Yellow:2-pin ( )
Check the motor connector, is the resistance between
the terminal in figure the same as below?
Resistance between terminals
~ :0.5~1.0
~ :1.5~2.5
Be sure to unplug the machine before measuring.
MOTOR TERMINAL
Replace the PWB assembly (Main).
30
Be sure to unplug the machine out of the outlet before disassembling and repairing the parts.
10. DISASSEMBLY INSTRUCTIONS
Unscrew 2 screws on the back of the top plate
assembly.
Pull the top plate backward and upward as shown.
Disconnect the PWB assembly (Display) connector.
Pull out the drawer and unscrew 3 screws.
Push 2 upper hooks down and pull the control panel.
Pull out the Rotary (Dial) knob.
Disconnect the PWB assembly (Display) from the
control panel by pushing 5 hooks down and
unscrewing 1 screw.
unscrewing 1 screw.
Hook
CONTROL PANEL
PLATE ASSEMBLY (TOP)
PANEL ASSEMBLY (CONTROL)
PWB ASSEMBLY (DISPLAY)
31
Disassemble the top plate assembly.
Unscrew 2 screws.
Disconnect connector from the wiring.
Disassemble the top plate assembly.
Pull out the drawer to arrow direction.
Unscrew 3 screws.
The hose clamps and the hose are disassembled.
The ventilation bellows and the water inlet bellows
are disassembled on the tub.
DISPENSER ASSEMBLY
PWB ASSEMBLY (POWER)
DISPENSER ASSEMBLY
DRAWER
■ WD-8070F(H), WD-1070(5)F(H)
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