Daewoo C-UD121DCEPB User manual

Service Manual
Drum Washing Machine
Model: C-UD121DCEPB
Apr. 2008
Caution
: In this Manual, some parts can be changed for improving,
their performance without notice in the parts list. So, if you
need the latest parts information, please refer to PPL(Parts
Price List) in Service Information Center (http://svc.dwe.co.kr).
S/M No. : CUD121DC01

DRUM WASHING MACHINE
SERVICE MANUAL
1. WHAT IS DRUM?..........................................................................1
2. WASHER SPECIFICATION..........................................................4
3. OPERATING MECHANISM DIAGRAM.........................................6
4. EACH PART OF DRUM WASHING MACHINE ............................8
5. PARTS LIST BY ASS'Y...............................................................10
6. CONTROL PART FUNCTION SPECIFICATION ........................25
7. ELECTRONIC FIELD PARTS LIST AND SPECIFICATION .......48
8. WIRING DIAGRAM .....................................................................75
9. TROUBLE SHOOTING REGARDING DRAIN ............................76
10. INSTALLATION.........................................................................77
11. ATTENTION POINT WITH SERVICING ...................................79

1
Water consumption is reduced by using the power of the laundry falling (free-fall) created when rotating
the drum. With temperature control system, this drum washing machine saves energy and improves
washing performance at the same time.
1. WHAT IS DRUM WASHING MACHINE?
1. Drum Washing Machine
ᶈWaist Care
Designed by the waist, and the most comfortable
angle eject into the laundry is convenient and easy to
manipulate.
ᶈThe World's First Steam White Course
The Steam White Course save more 50 percent of
Electricity, Water, Time than previous White Course.
ᶈStar Drum
Using Star Drum is able to higher Washing
Performance and Minimal damage of laundry, water
consumption.
ᶈThe biggest capacity with compact size
12 Kg Capacity enable to wash bigger laundry.
ᶈSumultaneous supply of cold and hot water
As cold and hot water is supplied at the same time
heating time and energy is saved.
ᶈLuxury Audio Dial
Using the advanced Audio Dial is luxury design of
exterior.
ᶈThe World's First Shoes Course Enable to wash
shoes.
ᶈDD inverter motor
The direct-drive type of which motor is directly
connected to drum without an interim chuth,
significantly reduces noise and vibration.
ᶈSelf-Cleaning Course of Drum.
Enable to Self-Cleaning of Drum.
ᶈDigital Condensing Dry System.
Condensing Dry System with saveing energy.
ᶈFor pump drainage, the powerful pump speeds up
drainage process.
2. Key Features

2
⍥DD Control: Direct drive type of direct connection between drum and motor
⍥Rotation by powerful high-performance BLDC motor
⍥Pump drainage type for built-in installation and Natural drainage
3. Power System
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lifter
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laundry laundry

3
4. Major Functions
ῡWashing
When rotating drum after putting in the laundry and detergent into the drum, the laundry are rotated by
protrusions (lifters) attached inside the drum.
Washing is carried out with bending and impact actions generated by falling of the laundry to the
bottom part of drum.
ῢRinsing
Rinsing cleanly washes out detergent and dirt removed from the laundry after washing cycle.
ΰSpin-drying
Weak, standard and strong spin cycle can be selected according to types of fabrics to be washed. spin-
wringing is carried out by rotation (the centrifugal force) of drum according to the designated speed.
ῤDrainage
Pump Drainage: Powerful pump for built-in installation and application of filter to remove foreign
substances
Natural Drainage: Applied Natural Drainage as the same pullsator.

4
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2.WASHER SPECIFICATION
1. Product Specification
NO PARTS NAME
1CABINET F
2FRAME DOOR O
3PROTECT GLASS
4PANEL F
5CASE DETERGENT
6PLATE TOP
7CABINET
8BUTTON DIAL
V
T
U
X
W
S
Q
R
DIMENSION(WxDxH) 630mm(W) x 792mm(D) x 976mm(H)
MACHINE WEIGHT 82 kg
WATER CONSUMPTION WASH 91 / DRY 51
WASHING CONSUMPTION 31
POWER SOURCE 230V/50Hz, 110V/60Hz, 127V/60Hz
POWER WASHING 200W (Heating ) ~ 2000W
CONSUMPTION DRY 1200W ~ 2100W
WASHING 12 kg
CAPACITY SPIN 12 kg
DRY 7 kg
WASHING TYPE DRUM TYPE
DRY TYPE Digital condensing dry system
OPERATION WATER PRESSURE 29kPa ~ 784kPa(0.3kgf/cm2~8kgf/cm2)

5
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NO PARTS NAME
1CABINET F
2FRAME DOOR O
3PROTECT GLASS
4PANEL F
5CASE DETERGENT
6PLATE TOP
7CABINET
8BUTTON DIAL
V
T
U
X
W
S
Q
R
DIMENSION(WxDxH) 630mm(W) x 792mm(D) x 976mm(H)
MACHINE WEIGHT 82 kg
WATER CONSUMPTION WASH 91 / DRY 51
WASHING CONSUMPTION 31
POWER SOURCE 230V/50Hz, 110V/60Hz, 127V/60Hz
POWER WASHING 200W (Heating ) ~ 2000W
CONSUMPTION DRY 1200W ~ 2100W
WASHING 12 kg
CAPACITY SPIN 12 kg
DRY 7 kg
WASHING TYPE DRUM TYPE
DRY TYPE Digital condensing dry system
OPERATION WATER PRESSURE 29kPa ~ 784kPa(0.3kgf/cm2~8kgf/cm2)

3. OPERATING MECHANISM DIAGRAM
6
4. WATER SUPPLY PART
• Cold Water: 3 holes
Cold water, pre-washing
• Hot Water: 1 hole
• Water supply box, hose
Water
Supply
Detergent
Container
Thermister
Door
Door
Switch
Drainage
Pump Washing
Heater
5. DOOR
• Door lock S/W
• Lock hinge
• Door AS: Glass
• Gasket
6. DRY PARTS
• HEATER DRY : OPTION
• BLOWER FAN
• FAN MOTOR : BLDC
•THERMISTOR
•THERMOSTAT
: FUSE, BI-METAL
• CONDENSING SYSTEM
• DRY FAN DRIVE
→ GENERATION OF HEATER’S
HEAT
→ TEMP. SENSOR
→ 110°C Off 100°C On : OPTION
7. DRAINAGE PART
• Drainage pump
• Valve housing
• Hose

7
Thermister
BLD
C
Motor
Drum
Program
Electricity Input
Noise Filter
8. SUPPORTER
• DAMPER AS : Front 2(70) / Rear 2(110N)
• Spring : 2
3. HEATING PART
• Water Heater: 1000W ~ 2000W
• Washing temperature sensor
2. DRIVING PART
• BLDC motor
• Drum
• Bearing
• Spider/ shaft
• Tub
• Weight balancer
1. CONTROL PART
• Main PCB
• Front PCB
• Harness
• Noise filter
• Power Cord: 15A

8
4. EACH PART OF DRUM WASHING MACHINE
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