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
bldc
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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XN@tub@assy
WN@base@u@as
TN@cabinet@f@assy
SN@door@as

9
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assy
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4)
3)
2)
1)
5)
6)
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QI@bldc@rotor
RI@bldc@stator
SI@shaft
TI@bearing@
UI@spider
VI@drum
WI@tub

10
1. PANEL F AS
5. PARTS LIST BY ASS’Y
No. PARTS NAME CODE SPECIFICATIONS Q’TY REMARK
A01 PANEL F OUTER 3614287900 ABS 1
A02 PANEL F INNER 3614288000 ABS 1
A03 DECORATOR START 3611686300 ABS 1
A04 BUTTON POWER 3616637100 ABS 1
A05 DECORATOR COURSE 3611686200 ABS 1
A06 WINDOW COURSE 3615505700 Trans parency ABS 1
A07 BUTTON DIAL IN 3616637300 ABS 1
A08 BUTTON DIAL OUT 3616637500 Trans parency 1
A09 BUTTON START 3616637600 ABS 1
A10 BUTTON RES 3616637200 ABS 1
A11 BUTTON FUNCTION 3616637700 ABS 1
A12 WINDOW DISPLAY 3615505600 Trans parency ABS 1
A13 CASE HANDLE 3611146800 ABS 1
A14 HANDLE CAP 3612611300 ABS 1
A15 SPRING CASE HANDLE 3615116000 SUS 304, D=0.6 1
A16 CASE PCB F 3611146700 HIPS 1
A17 HOLDER LED 3613054000 ABS 1
A18 HOLDER LED COURSE 3613053900 ABS 1
A19 PCB AS DWD-T120R FRONT PCB ASSY 1
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11
1. PANEL F AS
No. PARTS NAME CODE SPECIFICATIONS Q’TY REMARK
A01 PANEL F 36142T1400 ABS 1
A02 BUTTON POWER 3616638500 ABS 1
A03 WINDOW COURSE 3615506600 ABS 2
A04 KNOB DIAL IN 3613406400 ABS 1
A05 KNOB DIAL OUTER 3613406500 ABS 1
A06 BUTTON START 3616638600 ABS 1
A07 BUTTON RES 3616638700 ABS 1
A08 BUTTON FUNCTION 3616638400 ABS 1
A09 WINDOW DISPLAY 3615506500 ABS 1
A10 CASE HANDLE 36111T1400 ABS 1
A11 CASE PCB F 36111T1300 HIPS 1
A12 HOLDER LED FUNCTION 3613055000 ABS 1
A13 HOLDER LED COURSE 3613054900 ABS 2
A14 PCB AS DWD-T123R FRONT PCB 1
A15 PROTECTOR PCB 3618304800 SECC 0.6T, DWD-T110R 1
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12
2. INLET BOX AS
No. PARTS NAME CODE SPECIFICATIONS Q’TY
REMARK
B01 NOZZLE TOP 3618105400 PP 1
B02 NOZZLE UNDER 3618105500 PP 1
B03 INLET BOX 3617510900 PP 1
B04 CASE DETERGENT 3611146400 PP 1
B05 CAP SOFTENER 3610918300 PP 1
B06 CASE LIQUID 3611147900 PP 1
B07 CAP LIQUID 3610918000 PP 1
B08 HOSE INLET 3613272000 EPDM, "U" TRAP 1
B09 CLAMP AS 3611203200 ID=60, WIRE+GUIDE+BOLT+NUT 2
B10 HOSE WATER SUPPLY 3613270900 EPDM ID9.5 OD14.5, L=320mm 1 Combo
EPDM ID9.5 OD14.5, L=370mm 1 Wash
B11 HOSE WATER SUPPLY 3613270900 EPDM ID9.5 OD14.5, L=355mm 1
B12 HOSE WATER SUPPLY 3613270900 EPDM ID9.5 OD14.5, L=170x2 2
B13 HOSE WATER SUPPLY 3613270900 EPDM ID9.5 OD14.5, L=460mm 1
B14 PIPE JOINT(HOSE INLET) 3614413300 PP 1
B15 HOSE WATER SUPPLY 3613270930 EPDM ID8.5 OD12.5, L=530mm 1
B16 CLAMP HOSE 3611205800 100H, ID=13.8 W=10.0 0.9T 8
B17 VALVE INLET 3615415700 100~130V 1-WAY HOT PP-BRACKET 1
B18 VALVE INLET 3615415070 100~130V 3-WAY 1

13
3. CABINET F ASSY

14
No. PARTS NAME CODE SPECIFICATIONS Q’TY REMARK
C01 CABINET F 3610813000 SECD 0.8 t 1
C02 PLATE HINGE SUPPORT 3614539800 SPG 0.8 t 1
C03 HINGE DOOR 3612903800 AL 1
C04 CAP HINGE DOOR 3610916500 POM 4
C05 FRAME DOOR O 3612209900 ABS, CR 1
C06 HANDLE COVER 3612611500 ABS 1
C07 HOOK DOOR 3613100900 ZNDC 1
C08 SPRING HOOK 3615115400 SUS304 1
C09 HOOK SHAFT 3613101000 SUS, D=3.0 1
C10 SWITCH DOOR LOCK 3619047210 DL-S1 125V 16A 1
C11 FRAME DOOR I 3612209800 PP 1
C12 PROTECTOR GLASS 3618304300 PC 1
C13 STOPPER DOOR 3615202400 ABS 1
C14 DOOR GLASS 361A110600 GLASS 1

15
4. CABINET ASSY

16
No. PARTS NAME CODE SPECIFICATIONS Q’TY REMARK
D01 NOZZLE AIR 3618103110 PP, DWD-100DR 1
D02 FRAME TOP R 3612209300 GI 1.6 t 1
D03 FRAME TOP L 3612209400 GI 1.6 t 1
D04 CABINET 3610812900 SGCC 0.8 t 1
D05 COVER BACK AS 3611425540 COVER BACK + PAD CABINET 1
D06 STOPPER SPRING 3615202200 POM, DWD-100DR 2
D07 FIXTURE PLATE 3612008000 POM, 130RP 8
D08 FRAME UPPER 3612209500 SBHG, 1.2 t 1
D09 FRAME LOWER 3612204200 SBHG, 1.2 t 1
D10 HANDLE CABINET 3612608100 PP, DWD-100DR 4
D11 FRAME COVER 3612209600 SBHG, 1.2 t 1
D12 VALVE INLET 3615414800 HOT, 220~240 1
D13 VALVE INLET 3615415050 220~240V,3WAY,RINSE GUIDE,PP/BRACKET 1
3615414900 220~240V,2WAY,PP/BRACKET
D14 CASE PCB MAIN 3611146200 HIPS, DWD-T110R 1

17
5. BASE U AS

18
No. PARTS NAME CODE SPECIFICATIONS Q’TY REMARK
E01 BASE U 3610393200 PP, DWD-T120R 1
E02 SUPPORTER LEG 3615303600 PO+, 3.0T 4
E03 FIXTURE LEG 3612006400 ABS, DWD-100DR 4
E04 SPECIAL BOLT 3616029000 10 X 1.25, 51MM 4
E05 FOOT 3612100600 BUTYL, DWD-100DR 4
E06 REACTOR 52G043J002 DWD-100DR, 4A 1
E07 DAMPER FRICTION 361A700150 110N AKS ST=170-260 DL=197.5 LOW NOISE 2
E08 DAMPER FRICTION 361A700110 70N AKS ST=170-260 DL=197.5 LOW NOISE 2
E09 DAMPER PIN 361A700200 AKS D=14.5 4
E10 EMI FILTER(K19B) 3611909300
DWLF-K19(B110),X0.47U.Y1000P.VAR471K.NON FUSE 1