712981 - LG Washing Machine Service Manual (repair manual)

712981 service manual
Model
712981
Pages
59
Size
10.81 MB
Type
PDF
Document
Service Manual
Brand
Device
Washing Machine
File
712981.pdf
Date

Read LG 712981 Service Manual online

WAS HING  MAC HINE
S E R V IC E   MA NUA L
MODE L   :   F 1481T D*  /  F 1281T D*  /  F 1081T D*
2
CONTENTS
1. SPECIFICATIONS ............................................................................................................................. 3
2. FEATURES & TECHNICAL EXPLANATION ..................................................................................... 4
3. PARTS IDENTIFICATION  ................................................................................................................. 6
4. INSTALLATION .................................................................................................................................. 7
5. OPERATION ................................................................................................................................... 13
6. WIRING DIAGRAM / PCB LAYOUT ................................................................................................ 15
7. TROUBLESHOOTING ......................................................................................................................19
7-1.BEFORE PERFORMING SERVICE ......................................................................................... 19
7-2.LOAD TEST MODE .................................................................................................................. 19
7-3.HOW TO CHECK THE WATER LEVEL FREQUENCY ............................................................ 20
7-4.HOW TO CHECK THE TEMPERATURE OF EACH THERMISTOR AT OPERATING CONDITION ...... 20
7-5.ERROR DISPLAY ..................................................................................................................... 21
7-6.TROUBLESHOOTING WITH ERROR ..................................................................................... 23
• IE (Water Inlet Error)  .............................................................................................................. 23
• UE (Unbalanced Error) ........................................................................................................... 24
• OE (Water Outlet Error) .......................................................................................................... 25
• FE (Over Flow  Error)  ............................................................................................................. 27
• PE (Pressure Sensor S/W Error) ............................................................................................ 28
• dE (Door open Error) .............................................................................................................. 29
• tE (Thermistor (Heating) Error) ............................................................................................... 30
• LE (Motor Lock Error) ............................................................................................................. 31
• AE (Water leakage)  ................................................................................................................ 33
8. TROUBLESHOOTING OTHER ...................................................................................................... 34
• No power  ................................................................................................................................ 34
• Vibration & Noise during spin  ................................................................................................. 35
• Detergent & Softener does not flow in .................................................................................... 36
• Water Leak  ............................................................................................................................. 37
9. PART INSPECTION ........................................................................................................................ 39
9-1.FILTER ASSEMBLY (LINE FILTER) ......................................................................................... 39
9-2.DOOR LOCK SWITCH ASSEMBLY ......................................................................................... 40
9-3.STATOR ASSEMBLY  ............................................................................................................... 42
9-4.PUMP MOTOR ASSEMBLY ....................................................................................................... 45
9-5.INLET VALVE ASSEMBLY  ....................................................................................................... 46
9-6.THERMISTOR ASSEMBLY ...................................................................................................... 47
10. DISASSEMBLY INSTRUCTIONS .................................................................................................. 48
11. EXPLODED VIEW AND PART LIST .............................................................................................. 56
3
1. S P E C IF IC AT ION
IT E M
F 1481T D*  /  F 1281*  /  F 1081T D*
P OWE R  S UP P LY
P R ODUC T  WE IG HT
OP E R AT ION WAT E R  P R E S S UR E
C ONT R OL T Y P E  
WAS H C APAC IT Y
DIME NS ION
WAS H P R OG R AM
R INS E
DOOR  S WIT C H T Y P E  
WAT E R  LE V E L
R E S E R VAT ION
S E NS ING  LAUNDR Y  AMOUNT  
F UZZY  LOG IC  
DIS P LAY  R E MAINING  T IME
E R R OR  DIAG NOS IS  
P OWE R  AUTO OF F  
C HILD LOC K
AUTO R E S TAR T
T IME  S AV E
E LE C T R IC IT Y
C ONS UMP T ION
WAS HING
WAS H HE AT E R
DR AIN MOTOR
S P IN
R E V OLUT ION
S P E E D
WAS H
S P IN
F 1481TD*
F 1281TD*
F 1081TD*
No S pin / 400 / 800 / 900 / 1000
No S pin / 400 / 800 / 1000 / 1200
No S pin / 400 / 800 / 1000 / 1400
50 rpm
1.0 ~ 10.0 kgf / cm
2
(100 ~ 1000 kP a) 
E lectronic
R efer to the R ating Label
600 mm (W) x 590 mm (D) x 850 mm (H)
C otton, C otton E co, Mix, E asy C are, Duvet, B aby C are, 
S kin C are, S ports Wear, Dark Wash, Delicate, Wool, 
Intensive 60, Quick 30, S ilent Wash
Normal, R inse+, R inse++, R inse++Hold, Normal+Hold
P TC +S olenoid
10 steps (by sensor)
F rom 3 hours to 19 hours
Adapted
Adapted
Adapted
10 items
Adapted
Adapted
Adapted
Adapted
140 W
2000 W
30 W
440 W 
220 - 240 V  ~, 50 Hz
65 kg
To reduce the risk of personal injury, adhere to all industry recommended safety procedures including
the use of long sleeved gloves and safety glasses. 
F ailure to follow all of the safety warnings in this manual could result in property damage, personal
injury or death
4
2. FEATURES & TECHNICAL EXPLANATION
2-1. FEATURES
Direct Drive System
The advanced Brushless DC motor directly drives the drum without belt and pulley.
Water Circulation
The detergent water from the drum is sprayed directly over the load ; 
this enables the clothes to get soaked more quickly during the cycle.  
The detergent suds can be removed more easily by the water shower during rinse cycle.
The water circulation system uses both water and detergent more efficiently.
Built-in Heater
Child Lock
The Child lock prevents children from pressing any Buttons to change the settings during
operation.
More economical by Intelligent Wash System
Intelligent Wash 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.
Low noise speed control system
By sensing the amount of load and balance, it evenly distributes load to minimize the
spinning noise level.
Safety device (Aqua lock) 
Aqua lock System is designed for detecting water leakage during operation to prevent
water from spilling on the floor.  
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Download LG 712981 Service Manual (Repair Manual)

Here you can read online and download LG 712981 Service Manual in PDF. 712981 service manual will guide through the process and help you recover, restore, fix, disassemble and repair LG 712981 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.