WD-1070FB, WD-1071FB, WD-1071FBB - LG Washing Machine Service Manual (repair manual)

Model
WD-1070FB WD-1071FB WD-1071FBB
Pages
40
Size
2.59 MB
Type
PDF
Document
Service Manual
Brand
Device
Washing Machine
File
wd-1070fb-wd-1071fb-wd-1071fbb.pdf
Date

View LG WD-1070FB / WD-1071FB / WD-1071FBB Service Manual online

WASHING MACHINE
SERVICE MANUAL      
READ THIS MANUAL CAREFULLY TO DIAGNOSE TROUBLE 
CORRECTLY BEFORE  OFFERING SERVICE.
MODEL :
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-8078FHB
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-1078FHB
WM-1171(6)FHB
WM-1371(6)FHB
WD-1271FB(B)
WD-1071FB(B)
CAUTION    
e-mail : http://LGEservice.com/techsup.html
DEC. 2001 PRINTED IN KOREA
P/No.:3828ER3008E
CONTENTS
1. SPECIFICATION............................................................................................................................3
2. FEATURES & TECHNICAL EXPLANATION ................................................................................ 4  
3. PARTS IDENTIFICATION  ............................................................................................................ 6
4. INSTALLATION ............................................................................................................................. 7
5. OPERATION ................................................................................................................................10
6. WIRING DIAGRAM......................................................................................................................12
7. PROGRAM CHART .....................................................................................................................13
8. TROUBLESHOOTING.................................................................................................................14
8-1.BEFORE PERFORMING SERVICE ....................................................................................14
8-2.QC TEST MODE..................................................................................................................14
8-3.HOW TO KNOW THE WATER LEVEL FREQUENCY.........................................................14
8-4.ERROR DISPLAY ................................................................................................................15
9. ERROR DIAGNOSIS AND CHECK LIST ....................................................................................17
9-1. DIAGNOSIS AND ANSWER FOR ABNORMAL OPERATION ...........................................17
9-2. FAULT DIAGNOSIS AND TROUBLESHOOTING ..............................................................20
10. DISASSEMBLY INSTRUCTIONS  .............................................................................................30
11. EXPLODED VIEW AND PART LIST ..........................................................................................37
11-1. THE EXPLODED VIEW OF CABINET ASSEMBLY..........................................................37
11-2. THE EXPLODED VIEW OF CONTROL PANEL & DISPENSER ASSEMBLY ..................39
11-3. THE EXPLODED VIEW OF DRUM & TUB ASSEMBLY ...................................................40
APPENDIX (Replacement parts list).......................................................................................42
2
3  
1. SPECIFICATION
ITEM
POWER SUPPLY
220-240V~, 50Hz
PRODUCT WEIGHT
WASHING
SPIN (800rpm)
300W
DRAIN MOTOR
32W
WASH HEATER
2000W 
WASH
45rpm
SPIN
WD(M)-8070(4)F(H)(B)/WD-8078FHB
400/600/800 rpm
WD(M)-1070(5)F(H)(B)/1074(6))F(H)B/WD-1078FHB/1071FB(B)
400/600/800/1000 rpm
WD(M)-1170(5)F(H)B/1174(6)F(H)B/WM-1171(6)FHB
400/600/800/1100 rpm
WD(M)-1270(5)F(H)B/1274(6)F(H)B/1271FB(B)
400/600/800/1000/1200 rpm
WD(M)-1370(5)F(H)B/1374(6)F(H)B/WM-1371(6)FHB(B) 400/600/800/1100/1300 rpm
OPERATION WATER PRESSURE
0.3-10kgf/
(30-1000kPa) 
CONTROL TYPE
Electronic 
7.0kg 
Synthetic (4.0kg), Delicate (3.0kg)
Wool (2.0kg)  Hand Wash (2.0kg)
DIMENSION
600mm (W)
600mm (D)
850mm (H)
Whites, Coloureds, Synthetic, Delicate, Wool, Hand Wash
Rinse+Spin, Spin, Pump
OPTION
Bio, Rinse +, Eco, Pre Wash
DOOR SWITCH TYPE
Bi-Metal type    
WATER LEVEL
9 steps (by sensor)
RESERVATION
From 3 hours to 19 hours
SENSING OF THE LAUNDRY AMOUNT
Adopted 
FUZZY LOGIC
Adopted      
DISPLAY OF THE REMAINING TIME
Adopted 
ERROR DIAGNOSIS
7items
10items
POWER AUTO OFF
Adopted 
CHILD LOCK
Adopted
AUTO RESTART
Adopted
WD(M)-8070F(H)/1070(5)F(H)
67kg
190W
ELECTRICITY
CONSUMPTION
WASH CAPACITY
WASH PROGRAM
REVOLUTION 
SPEED
63kg
150W
WD(M)-8070F(4)(H)B/1070(5)F(H)B/1170(5)F(H)B
WD(M)-1270(5)F(H)B/1370(5)F(H)B 
WD(M)-1074(6)F(H)B/1174(6)F(H)B 
WD(M)-1274(6)F(H)B/1374(6)F(H)B
WD-8078FHB/1078FHB
WM-1171(6)FHB
WM-1371(6)FHB
WD-1271FB(B), WD-1071FB(B) 
Jumbo drum
LG’s jumbo drum can wash about 40% more per load than
conventional washing machine. A bigger drum improves the
wash performance.
More economical by Fuzzy Logic System
FUZZY Logic System detects the amount of load and water
temperature, and then determines the optimum water level
and washing time to minimize energy and water
consumption.
Child-Lock
The Child-Lock system has been developed to prevent
children from pressing any button to change the programme
during operation.
Low noise speed control system
By sensing the amount of load and balance, automatical
distributes load evenly to minimize the spinning noise level.
Auto Restart
Although the washing machine is turned off by a power failure,
it restarts automatically where it stopped when power is
supplied again. It will be the same when the machine
unplugged and is plugged in again.
2. FEATURES & TECHNICAL EXPLANATION
4  
2-1.FEATURES
40%
2-2.DETERMINE WASHING TIME BY FUZZY LOGIC
To get the best washing performance optimal time is determined by sensing of water temperature, 
selected washing temperature and laundry amount.
2-3.WATER LEVEL CONTROL
This model adopts a pressure sensor which can sense the water level in the tub.
When the water level reaches to the preset level the water supply is stopped, then the washing program proceeds.
Spinning does not proceed until the water in the tub reduces a certain level.
2-4.THE DOOR CAN NOT BE OPENED
While program is operating.
While Door Lock light turns on.
5
FUZZY
LOGIC
laundry
amount
selected
washing
temperature
water
temperature
washing time
rinse time
spin rhythm, time
the best
washing
performance
SENSING
PROCESSING
DETERMINATION
EFFECT
3. PARTS IDENTIFICATION
6
Hot/Cold (2EA)
Cold (1EA)
Wrench
Power plug
Control panel
Door
Lower cover
Adjustable feet
(For detergent and 
fabric softener)
Drawer
Drum
Drain hose
Lower cover cap
Drain pump filter
Drain plug
   If the supply cord is damaged,
   it must be replaced by the
 manufacturer or its service
 agents or a similarly qualified
 person in order to avoid a
 hazard.
ACCESSORIES
Before servicing ask the customer what the trouble is.
Check the adjustment (power supply is 220-240V, remove the transit bolts....)
Check the troubles referring to the troubleshooting.
Decide service steps referring to disassembly instructions.
Then, service and repair.
After servicing, operate the appliance to see whether it works O K  or NOT.
STANDARD INSTALLATION
The appliance should be installed as follows.
Remove the transit bolts
Turn the adjustable feet to
(4EA: ) with supplied wrench. 
set the appliance horizontally.
Keep the transit bolts and  
wrench for future use.
Insert the 4 caps provided 
into the hole.
The appliance goes up by 
rotating the feet clockwise. 
The appliance comes down by
rotating the feet counter-
clockwise.
4. INSTALLATION 
7
1
High
Low
REMOVE 
THE TRANSIT BOLTS  
INSTALL THE  APPLIANCE ON
FLAT AND FIRM SURFACE
ADJUST THE 
HORIZONTAL
HOW TO CONNECT INLET HOSE
Check that the rubber washer is inside of the
valve connector.
Connect the inlet hose firmly to prevent leak.
CONNECT DRAIN HOSE
CONNECT POWER PLUG
8   
Make sure that the hose is not twisted.
The drain hose should be placed under 100cm from the floor.
Connect the power plug to the wall outlet.
Avoid connecting several electric devices, 
It may be the cause  of a fire.
Avoid submerging the end of the hose.
TEST OPERATION
9
Connect the power plug to
In case of Coloureds program.      
the outlet.
Connect the inlet hose.   
Preparation for 
Press the power button.
Press the Start/Pause
washing.
button.
Press the button TEMP
Check if the drum rotates  
Check if water is supplied
and  the present temperature  
clockwise and    
through the detergent 
will be displayed.
counterclockwise. 
dispenser. 
Power off and  then power on.
Check if the door can be 
opened after door lock lamp
turns off.
Turn off Spin and Temp after
pressing the Start/Pause button
and start the machine again.
Check drain and Spin.
If SVC is needed during check,
remove the remaining water by
pulling out the hose cap.
Check the water heating.
Check automatic reverse
Check the water supply.
turn.
Check drain and spin 
Power off and open the 
Water removal 
door

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Here you can view online and download LG WD-1070FB / WD-1071FB / WD-1071FBB Service Manual in PDF. WD-1070FB / WD-1071FB / WD-1071FBB service manual will guide through the process and help you recover, restore, fix, disassemble and repair LG WD-1070FB / WD-1071FB / WD-1071FBB Washing Machine. Information contained in service manuals typically includes schematics / circuit diagrams, wiring diagrams, block diagrams, printed wiring boards, exploded views, parts list, disassembly / assembly, pcb.