DOWNLOAD LG WD-MD750WM Service Manual ↓ Size: 58.44 MB | Pages: 44 in PDF or view online for FREE

Model
WD-MD750WM
Pages
44
Size
58.44 MB
Type
PDF
Document
Service Manual
Brand
Device
Washing Machine
File
wd-md750wm.pdf
Date

LG WD-MD750WM Service Manual ▷ View online

CONTENTS
1. SPECIFICATIONS ............................................................................................................................ 3
4
2. FEATURES & TECHNICAL EXPLANATION
....................................................................................
3. PARTS IDENTIFICATION
............................................................................................................... 6
4. INSTALLATION
................................................................................................................. 7
5. OPERATION
 
...................................................................................................................12
5-1. F**B9(Q/T)D(T)
 
......................................................................................................................
12
14
6. WIRING DIAGRAM / PCB LAYOUT / PROGRAM CHART
..............................................................
7. TROUBLESHOOTING
...................................................................................................................... 17
17
17
17
7-1. BEFORE PREFORMING SERVICE
 
..........................................................................................
7-2. LOAD TEST MODE
 
...................................................................................................................
7-3. HOW TO KNOW THE WATER LEVEL FREQUENCY
 
..............................................................
7-4. ERROR DISPLAY ...................................................................................................................... 18
19
7-5. TROUBLESHOOTING WITH ERROR
 
......................................................................................
• IE ( Water Inlet Error)
 
............................................................................................................... 19
• UE (Unbalanced Error)  
............................................................................................................. 20
• OE ( Water Outlet Error)  
........................................................................................................... 21
• FE (Flow over Error)
 
................................................................................................................. 23
24
• PE (Pressure Sensor S/W Error)
 
..............................................................................................
• DE (Door open Error)  
............................................................................................................... 25
• tE (Thermistor (Heating) Error)
 
................................................................................................. 26
• LE (Motor Lock Error)
 
............................................................................................................... 27
29
29
8. TROUBLESHOOTING WITHOUT ERROR CODES
 
........................................................................
• PF (Power Failure or no power)
 
...............................................................................................
• Vibation & Noise in spin
 
........................................................................................................... 30
31
• Detergent & Softener does not flow in
 
.....................................................................................
• Water Leak  ............................................................................................................................... 32
9. DISASSEMBLY INSTRUCTIONS
 
.................................................................................................... 34
10. EXPLODED VIEW
 
.......................................................................................................................... 41
2
3
1. SPECIFICATION
ITEM
 F**B9(Q/T)D(T)
POWER SUPPLY
PRODUCT WEIGHT
OPERATION WATER PRESSURE
CONTROL TYPE 
WASH CAPACITY
DIMENSION
DOOR SWITCH TYPE 
WATER LEVEL 
DELAY FINISH TIME
SENSING OF THE LAUNDRY AMOUNT 
FUZZY LOGIC 
DISPLAY OF THE REMAINING TIME
ERROR DIAGNOSIS 
POWER AUTO OFF
CHILD LOCK 
AUTO RESTART
ELECTRICITY
CONSUMPTION
WASHING
SPIN (1400rpm)
DRAIN PUMP
WASH HEATER
REVOLUTION
SPEED
WASH
SPIN
No Spin ~ 1000 rpm
50rpm
1.0-10kgf/cm
2
(100-1000kPa)
Electronic
T_Cotton 8kg / Q_Cotton 7kg (Max.)
600mm(W)x550mm(D)x850mm(H)
Bi-Metal  Switch type
9  steps ( by sensor)
   
   
Available
3 , 6 , 9 Hours
Available
Available
Available
Available
 
10 items
220V  
61kg
F10**(Q/T)D(T)(3)(1~9)
F12**(Q/T)D(T)(3)(1~9)
F14**(Q/T)D(T)(3)(1~9)
No Spin ~ 1200 rpm
No Spin ~ 1400 rpm
230V  
240V  
140  
520  
430  
350  
150  
530  
460  
355  
160  
560  
490  
360  
SPIN (1400rpm)
SPIN (1400rpm)
33  
2000  
36  
2100  
37  
2200  
Available
2-1. FEATURES
2. FEATURES & TECHNICAL EXPLANATION
4
Direct Drive System
The advanced Brushless DC motor directly drives the drum without 
belt and pulley.
Child Lock
The Child lock prevents children from pressing any button 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.
B
uilt-in heater
temperature on selected cycles.
Protection against creases
With the alternate rotation of the drum, creasing in the laundry is
minimized.
6 Motion
Washer is able to perform various drum actions or a combination of
Smart Diagnosis™
Only use this feature when instructed to do so by the call center.
The transmission sounds similar to a fax machine, and so has no
meaning except to the call center.
different actions depending on the wash program selected.
Combined with a controlled spin speed and the ability of the drum to
rotate both left and right, the wash performance of the machine is greatly
improved, giving you perfect results every time.
Low noise speed control system
By sensing the amount of load and balance, it evenly distributes
load to minimize the spinning noise level.
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 uses a pressure sensor to determine the water level in the tub.
When the preset water level reached, water supply is stopped and the program proceeds.
W
ater needs to be below a preset level before spining will proceed.
water
temperature
washing time
rinse time
the best
washing
performance
spin rhythm, time
laundry
amount
FUZZY
LOGIC
selected
washing
temperature
SENSING
EFFECT
PROCESSING
DETERMINATION
2-4. THE DOOR CAN NOT BE OPENED
While program is operating.
While Door Lock light turns on.
5
Page of 44
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LG WD-MD750WM Service Manual ▷ Download

  • DOWNLOAD LG WD-MD750WM Service Manual ↓ Size: 58.44 MB | Pages: 44 in PDF or view online for FREE
  • Here you can View online or download the Service Manual for the LG WD-MD750WM in PDF for free, which will help you to disassemble, recover, fix and repair LG WD-MD750WM Washing Machine. Information contained in LG WD-MD750WM Service Manual (repair manual) includes:
  • Disassembly, troubleshooting, maintenance, adjustment, installation and setup instructions.
  • Schematics, Circuit, Wiring and Block diagrams.
  • Printed wiring boards (PWB) and printed circuit boards (PCB).
  • Exploded View and Parts List.