Daewoo DWF-4220 Series Service Manual
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Daewoo DWF-4220 Series Service Manual

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S/M NO.: WF42200100
DAEWOO ELECTRONICS CO., LTD.
612-1, AHYEON-DONG, MAPO-GU,
SEOUL, KOREA.
C.P.O. BOX 8003 SEOUL KOREA
TELEX: DWELEC K28177-8
CABLE:"DAEWOOELEC"
FAX: (02) 364-5588/5305
TEL: (02) 360/7315~7
PRINTED DATE: APR. 1996

Service Manual

Full-Auto Electric Washing Machine
DWF-4220 (Series)
DWF-5020 (Series)
DAEWOO ELECTRONICS CO., LTD.

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Summary of Contents for Daewoo DWF-4220 Series

  • Page 1: Service Manual

    Service Manual Full-Auto Electric Washing Machine DWF-4220 (Series) DWF-5020 (Series) DAEWOO ELECTRONICS CO., LTD. 612-1, AHYEON-DONG, MAPO-GU, SEOUL, KOREA. C.P.O. BOX 8003 SEOUL KOREA TELEX: DWELEC K28177-8 CABLE:"DAEWOOELEC" FAX: (02) 364-5588/5305 DAEWOO ELECTRONICS CO., LTD. TEL: (02) 360/7315~7 S/M NO.: WF42200100...

  • Page 2: Table Of Contents

    TABLE OF CONTENTS 1. SPECIFICATIONS..................................2 2. FEATURE AND TECHNICAL EXPLANATION FEATURE OF THE WASHING MACHINE ..........................3 WATER CURRENTS TO ADJUST THE UNBALANCED LOAD ....................3 PULSATOR SYSTEM ................................4 AUTOMATIC DRAINING TIME ADJUSTMENT........................4 SOFTENER DISPENSER................................5 AUTOMATIC UNBALANCE ADJUSTMENT ..........................6 CIRCULATING-WATER COURSE AND LINT FILTER......................6 SYNCRONOUS MOTOR................................7 YNCRONOUS GEAR MECHANISM ASS'Y..........................8 PRINCIPLE OF BUBBLE GENERATOR ...........................8...

  • Page 3: Specifications

    1. SPECIFICATIONS ITEM SPECIFICATIONS POWER SOURCE AC 220V/60Hz AC 127V/50,60Hz AC 110V/60Hz AC 220V/50Hz AC 240V/50Hz POWER DWF-4220 370W 370W 370W 330W 330W CONSUMPTION DWF-5020 430W 430W 430W 370W 370W MACHINE DWF-4220 NON PUMP: NET; 30.5kg, GROSS: 35 kg PUMP: NET; 31.5kg, GROSS; 36kg WEIGHT DWF-5020 NON PUMP: NET;...

  • Page 4: Feature And Technical Explanation

    2. FEATURE AND TECHNICAL EXPLANATION FEATURE OF THE WASHING MACHINE 1) The first air bubble washing system in the world. 2) Quiet washing through the innovational low-noise design. 3) The wash effectiveness is much more enhanced because of the air bubble washing system. 4) The laundry detergent dissolves well in water because of the air bubble washing system.

  • Page 5: Pulsator System

    PULSATOR SYSTEM When the new shaped pulsator is rotated C.W or C.C.W at a high speed, it makes the 'heart-shaped' water currents as shown below. WATER CURRENTS A Water is pushed up near the tub Rotate wall by rotation of the pulsator. B Water is pulled down in the middle of the tub by rotation of the pulsator...

  • Page 6: Softener Dispenser

    SOFTENER DISPENSER This is the device to dispense the softener automatically by centrifugal force. This is installed inside the Balancer Ass'y. FUNCTIONAL PRINCIPLE 1. Softener stays in room (A) when poured into softener inlet. 2. Softener in moved from (A) to (B) by centrifugal force during intermittent spin process. 3.

  • Page 7: Automatic Unbalance Adjustment

    AUTOMATIC UNBALANCE ADJUSTMENT This system is to prevent abnormal vibration during intermittent spin and spin process. FUNCTIONAL PRINCIPLE 1. When the door is closed, the safety switch contact is "ON" position. 2. In case that wash loads get uneven during spin, Contact of safety switch door closing the outer tub hits the safety switch due to the serious vibration, and the spin process is...

  • Page 8: Syncronous Motor

    LINT FILTER Much lint may be obtained according to the kind of clothes to be washed and some of the lint may also stick to the clothes. To minimize this possibility a lint filter is provided on the upper part of the tub to filter the wash water as it is discharged from the water channel.

  • Page 9: Yncronous Gear Mechanism Ass'y

    GEAR MECHANISM ASS'Y The proper water currents is made by the rotation of pulsator at a low speed to prevent the damage to the small sized clothes. Pulsator shaft Spinner shaft One clutch bearing Planetary gear Sun gear Planetary gear Internal gear Clutch spring Brake lever...

  • Page 10: Functional Principle Of Bubble Washing Machine

    PRINCIPLE OF INTAKE & OUTLET OF THE AIR INTAKE : ARMATURE moves up, and BELLOWS inhales the air. At the same time, protector B is open and A is close. OUTLET: ARMATURE moves down, and BELLOWS exhausts the air. At the same time, protector B is close and A is open.

  • Page 11: Structure Of The Washing Machine

    3. STRUCTURE OF THE WASHING MACHINE • SOFTENER INLET Pour softener into the softener inlet just before wash and it will be added into the tub automatically just before the final rinse. • BLEACH • POWER SWITCH INLET • HOOK HOLE •...

  • Page 12: Functions Of The Control Panel

    4. FUNCTIONS OF THE CONTROL PANEL Control Panel It has micom sensor. As the buttons are pressed, the lamps indicating the selection of your desired washing program will light up. Start/Hold Button • Press this button to begin operation or to stop Power Switch operation temporarily.

  • Page 13: Directions For Installation And Use

    5. DIRECTIONS FOR INSTALLATION AND USE HOW TO INSTALL THE WASHING MACHINE Selection of the Installing Place Never install in these places. Install the washer on the horizontal solid floor. • The place where it would be exposed to direct If the washer is installed on an unsuitable floor, it could make sunlight.
  • Page 14 ¡ Installing the Drain Hose [Pump Model] Connect the drain hose to the drain outlet at the rear side of Never forget to install drain hose before operating this the washing machine, and washing machine. The packing box opened, there are a fasten it tightly with the clamp drain hose, a clamp, and a hose fixture.

  • Page 15: How To Connect The Inlet Hose

    HOW TO CONNECT THE INLET HOSE In Installing the Inlet Hose ¡ ™ Pull down the collar Loosen the four of the inlet hose to screw at the water separate it from the tap adapter, but water tap adapter. don't loosen the screws until they are separated from the water tap adapter.

  • Page 16: How To Ground The Wire

    HOW TO GROUND THE WIRE Grounding Method • If your water tap or water pipe is • If both your water tap and water • In case of using 3-core cord, pipe are made of metal, connect there is no need for grounding. not made of metal, connect the the ground wire to the base of ground wire to a copper plate or a...

  • Page 17: Procedure Of Full-Automatic Washing

    6. PROCEDURE OF FULL-AUTOMATIC WASHING START/HOLD PROCESS COURSE WATER LEVEL WATER TEMP. Full Automatic Course Selecting Course Pressing Selecting Procedure to the Power Kinds of the Water level Press the Button Course Switch Clothes Fuzzy General clothes • The Water Course level is selected...
  • Page 18 START/HOLD PROCESS COURSE WATER LEVEL WATER TEMP. Partial Selections Among Wash, Rinse or Spin Pressing Selecting Selecting Process the Power Water level Switch Stage 1 Only Wash End of Stage 2 Only Rinse Process It is informed by buzzer. Stage 3 Only Spin POWER START/HOLD...

  • Page 19: Directions For Disassembly And Adjustment

    7. DIRECTIONS FOR DISASSEMBLY AND ADJUSTMENT WARNING BEFORE ATTEMPTING TO SERVICE OR ADJUST ANY PART OF THE WASHING MACHINE, DISCONNECT THE POWER CORD FROM THE ELECTRIC OUTLET. GEAR MECHANISM ASS'Y REPLACEMENT • Raise the top plate on the outer cabinet. •...

  • Page 20: Syncronous Motor And Valve Replacement

    SYNCRONOUS MOTOR AND VALVE REPLACEMENT • Lay the front of the washer on the floor. • Separate the syncronous motor from the bracket. • Loosen the adjustment screw and three bolts • Turn the valve lid by using screw driver as shown in mounting the drain motor.

  • Page 21: Trouble Shooting Guide

    8. TROUBLE SHOOTING GUIDE NOTE: 1. When you replace the P.C.B. ASS'Y do not scratch the surface of the P.C.B. ASS'Y. 2. Disconnect the power cord from the electric outlet. CONCERNING WATER SUPPLY PROBLEM CHECK POINT CAUSE SOLUTION Do you open the Open the water Water tap? tap.

  • Page 22: Concerning Washing

    PROBLEM CHECK POINT CAUSE SOLUTION Is the plug connected Connect the plug. to electric outlet? Is the power switch Press the power switch. pressed? THE INDICATOR LAMP (LED) DOES NOT Is the condition of Power switch LIGHT UP Change power switch. power switch good? is defective.

  • Page 23: Concerning Draining

    CONCERNING DRAINING PROBLEM CHECK POINT CAUSE SOLUTION Is the door open? Close the lid. Does the safety switch Safety switch is Change the safety operate normally? defective. switch. THE WASHER DOES NOT Is the connector Improper connection Connect the connector DRAIN.

  • Page 24: Concerning Spinning

    CONCERNING SPINNING PROBLEM CHECK POINT CAUSE SOLUTION Does the pulsator rotate while the tub does not rotate? Is the input voltage Syncronous motor Change the of the drain motor is defective. Syncronous motor. THE WASHER normal? DOES NOT SPIN. P.C. B ASS'Y Change the is defective.

  • Page 25: Concerning Operation

    CONCERNING OPERATION PROBLEM CHECK POINT CAUSE SOLUTION Is the plug connected Connect the plug. to electric outlet? Is the power switch Press the power switch. pressed? THE INDICATOR LAMP (LED) DOES NOT Is the condition of Power switch LIGHT UP Change power switch.

  • Page 26: Presentation Of The P.c.b Ass'y

    9. PRESENTATION OF THE P.C.B ASS'Y CONCERNING ERROR MESSAGE MESSAGE CAUSE SOLUTION ƒoƒoƒo ƒoƒoƒoƒo § § § § ƒoƒoƒo Improper installation of drain hose. Install drain hose properly. DRAINAGE ERROR The drain hose is blocked up by foreign matter. Remove foreign matter from drain hose. Drain motor is inferior.
  • Page 27 TEST MODE The operation condition of the washer can be checked without water in the tub by test mode of the P.C.B. ASS'Y as shown below. No. of times to press Check DISPLAY Items The condition of button Mode being checked normal operation 'Water Level' •...

  • Page 28: Configuration Of Full Circuits

    CONFIGURATION OF FULL CIRCUITS LOAD DRIVE UNIT (MOTOR, WATER INLET, DRAIN, BUBBLE) WATER LEVEL SENSOR DISPLAY UNIT UNIT LOAD SENSOR UNIT L.E.D INTERRUPT UNIT POWER SUPPLY UNIT MAIN OSC (4.1943MHz) KEY INPUT UNIT RESET UNIT SAFETY SWITCH UNIT BUZZER UNIT...

  • Page 29: Minute Explanation Diagram For Each Parts

    MINUTE EXPLANATION DIAGRAM FOR EACH PARTS MICOM IC (42 DIP) VAREF VASS R92(SCK) R40 (AIN0) R91(SO) R41 (AIN1) R90(SI) R42 (AIN2) R83(T1) R43 (AIN3) R82(INT1) R50 (AIN4) R81(T2) TMP47C 840N R51 (AIN5) TOSHIBA R80(INT2) R52 (AIN6) HOLD(KEO) R53 (AIN7) RESET XOUT ROM: 8192X8 bit RAM: 512X4 bit...
  • Page 30 LOAD DRIVE UNIT (CW WASH, CCW WASH, DRAINAGE, BUBBLE, PUMP, HOT WATER, COLD WATER) 1. CIRCUIT DIAGRAM AND EXPLANATION 1 BL/YW 683k 2 VT 100 1W SM12JZ47 A1270 TRIAC1 3.3K 104Z R51 10 683k R1/2W 3 BL 100 1W SM12JZ47 A1270 3.3K TRIAC2...
  • Page 31 2. DETAIL EXPLANATION OF CIRCUIT ACTION (ACTION OF CW WASH) R1 100 1W C1 683K 104Z TRC1 SM12JZ47 R67 3.9K Q8 A1270Y MICOM AC COMMON +6V R21 62 1/2W •In case MICOM TERMINAL No. 10 is 'L', the Q8 (A1270Y) turn on and control the TRIAC. The resistance, as 62Ω & 1/2W, of the R21 is used to limit the GATE current of the TRIAC.
  • Page 32 • The TRIAC's names and the values of the snubber & resistance of the total parts. GATE’S RESISTANCES OF VALUES OF RESISTANCES OF LOAD TRIAC’S NAME LIMITED THE SNUBBER TOTAL PARTS CURRENTS CW WASH SM12JZ47 100Ω, 1W+683K 62Ω, 1/2W BCR 12PM-14L AC 250V CCW WASH SM12JZ47...
  • Page 33 2. EXPLANATION OF CIRCUIT • Push the power switch. And, in order to carry on the action of course selection, input the selection of frequency according to each water level selection. • The frequency of water level sensor in each water level becomes square wave and is sended to the MICOM. WATER LEVEL NAME FREQUENCY WATER LEVEL...
  • Page 34 ELECTRIC POWER SUPPLY UNIT 1. CIRCUIT DIAGRAM D5 IN4003 D3 1N4003 REGULATOR 7806 104Z 470uF 1000uF 470uF 104Z – – 104Z 104Z D2 1N4003 2. EXPLANATION OF CIRCUIT • The primary voitage of the transformer sets RATING VOLTAGE, the secondary voltage of the transformer is full wave rectified by use of the D2 (1N4003) &...
  • Page 35 • The Electrolytic condenser C22(1000µF, 16V) and diode D5 is used in order that at instant power supply failure circuit should remember the contents of the program. It happens that the MICOM terminal No. 42 has instant interruption of electric power, yet the MICOM is not discharged electricity because of the diode D5. •...
  • Page 36 • After connecting the part of the dotted line & waveform • The waveform measurement in the MICOM No.37. measurement 5.4V The waveform of the secondary part in transformer passes through the diode D1,D4 (1N4003), and then the voltage is divided by means of the resistance R60 &...
  • Page 37 BUZZER UNIT 1. CIRCUIT DIAGRAM BUZZER R57 220 MICOM 2. EXPLANATION OF CIRCUIT • After the button action and total process ends, BUZZER is active. • It is active directly with offering an output the frequency waveform of 2 KHz from the MICOM terminal NO. 20. BUTTON INPUT UNIT 1.
  • Page 38 OSCILLATION UNIT 1. CIRCUIT DIAGRAM XOUT 4.194304 MHz 33pF 33pF 2. EXPLANATION OF CIRCUIT • As the OSCILLATION UNIT is a basic part of the MICOM DRIVE. If the oscillation doesn’t generate, we are able to consider that the MICOM is destroyed. •...
  • Page 39 2. EXPLANATION OF CIRCUIT • The MICOM terminal No. 13 gets into 'L' at the state of the closed door. If the door is opened in spining stage, the MICOM generates error signal. (See page 27) • Case of range 40 mSEC~300 mSEC in spining time: It is regarded that washing clothes should be inclined. Accordingly washing time increases 8 minutes and rinsing action takes place another one time.
  • Page 40 DISPLAY UNIT 1. CIRCUIT DIAGRAM 34 HOLD 17 P10 A1270 3.9K 18 P11 A1270 3.9K 11 R60 A1270 3.9K STANDARD R66 220 22 P20 WARM SPEED R9 220 23 P21 COLD DIRTY R64 220 24 P22 DRY/WOOL R58 220 25 P23 RINSE WASH R34 220...

  • Page 41: Appendix

    A P P E N D I X WIRING DIAGRAM [PUMP]...
  • Page 42 WIRING DIAGRAM [NON-PUMP]...

  • Page 43: Parts List (The Whole)

    PART LIST REF No. PART CODE PART NAME DESCRIPTION Q'TY REMARK ASS'Y PLATE 3614511900 PLATE T HIPS 3612723300 HARNESS AS AC 220V/50Hz, 60Hz 3612723310 AC 110V/50Hz, 60Hz 3612723340 AC 100V/50, 60Hz 3614213100 PANEL F HIPS 3611609200 DECORATOR PC FILM 0.254t PRPSSWUU00 PCB ASS'Y DWF-4220 (PUMP)
  • Page 44 REF No. PART CODE PART NAME DESCRIPTION Q'TY REMARK ASS'Y TUB 3616102800 BALANCER AS DWF-4220 3616003100 DWF-5020 3618803500 TUB I DWF-4220 3618805400 YUS 430D 0.6t DWF-5020 3618805300 TUB U DWF-5020 3612502500 GUIDE FILTER DWF-4220 3612506310 DWF-5020 4505E05021 FLANGE TUB ADC-10 3610085500 ASS'Y FILTER PP (NYLON 74x130)
  • Page 45 REF No. PART CODE PART NAME DESCRIPTION Q'TY REMARK 7640061611 BOLT HEX (to PROTECTOR) 6B-1, 6x16, SW, MFZN 3966130120 MOTOR SYNCHRONOUS 100V/50, 60Hz (JE) 450ED45020 110-130V/60Hz (PT/S/A) 3966010140 220-240V/50Hz (PN/M) 3615404000 VALVE DRAIN AS NON-PUMP 3613215100 HOSE DRAIN I AS PUMP 3613210300 NON-PUMP...
  • Page 46 REF No. PART CODE PART NAME DESCRIPTION Q'TY REMARK 3611901800 FILTER LINT P.P (5-150) 3614002000 PACKING 3616004300 SPECIAL WASHER P.C SHEET 3610903800 CAP FILTER P.P (J-150) 3618703770 TERMINAL PUMP CONNECTOR PN/PL 3618703720 CONNECTOR+FUSE ASS'Y WASHING MACHINE 3619801600 SUSPENSION AS DWF-4200 SERIES (Front) 3619801610 SUSPENSION AS DWF-4200 SERIES (Back)

  • Page 47: Parts Diagram

    PARTS DIAGRAM...
  • Page 48 *DWF-4220 *NON-PUMP MODEL...
  • Page 49 NON-PUMP MODEL...

  • Page 50: Parts List

    P.C.B PARTS LIST REF No. PART CODE PART NAME DESCRIPTION REMARK RD-4Z392JK R CARBON FILM 1/4 3.9kΩ J RD-4Z392JK R CARBON FILM 1/4 3.9kΩ J RD-4Z392JK R CARBON FILM 1/4 3.9kΩ J RD-4Z392JK R CARBON FILM 1/4 3.9kΩ J RD-4Z392JK R CARBON FILM 1/4 3.9kΩ...
  • Page 51 REF No. PART CODE PART NAME DESCRIPTION REMARK RD-4Z331JK R CARBON FILM 1/4 330Ω J RD-4Z223JK R CARBON FILM 1/4 22kΩ J RD-4Z103JK R CARBON FILM 1/4 10kΩ J RD-4Z103JK R CARBON FILM 1/4 10kΩ J RD-4Z103JK R CARBON FILM 1/4 10kΩ...
  • Page 52 REF No. PART CODE PART NAME DESCRIPTION REMARK CCZF1E103Z C CERA 25V 0.01µF Z AXL 2 CCKF1H104Z C CERA HIKF 50V 0.1µF Z AXL 2 CCKF1H104Z C CERA HIKF 50V 0.1µF Z AXL 2 CCKF1H104Z C CERA HIKF 50V 0.1µF Z AXL 2 CCKF1H104Z C CERA HIKF 50V 0.1µF Z AXL 2...
  • Page 53 REF No. PART CODE PART NAME DESCRIPTION REMARK TZTA1270Y- KTA1270Y (AUTO ) (562Y) TZTA1270Y- KTA1270Y (AUTO ) (562Y) TZTA1270Y- KTA1270Y (AUTO ) (562Y) TZTA1270Y- KTA1270Y (AUTO ) (562Y) TZTA1270Y- KTA1270Y (AUTO ) (562Y) TZTA1270Y- KTA1270Y (AUTO ) (562Y) TZTA1270Y- KTA1270Y (AUTO ) (562Y) TZTA1270Y- KTA1270Y (AUTO ) (562Y) TZTA1270Y-...
  • Page 54 REF No. PART CODE PART NAME DESCRIPTION REMARK LED6 DDLR523D-- LED-LAMP DLR523D LED7 DDLR523D-- LED-LAMP DLR523D LED8 DDLR523D-- LED-LAMP DLR523D LED9 DDLR523D-- LED-LAMP DLR523D LED10 DDLR523D-- LED-LAMP DLR523D LED11 DDLR523D-- LED-LAMP DLR523D LED12 DDLR523D-- LED-LAMP DLR523D LED13 DDLR523D-- LED-LAMP DLR523D LED14 DDLR523D-- LED-LAMP...

  • Page 55: Circuit Diagram

    CIRCUIT DIAGRAM [PUMP] BL/YW BL/YW C1 683K 250VAC 100 1W SM12JZ47 A1270 W/M RIGHT MOTOR 21 VSS R53 10 TRIAC1 62 R1/2W 104Z 3.9K RUNNING CAPACITOR 683K 30 TEST 1N5399 WH/RD 250VAC A1270 100 1W SM12JZ247 R52 9 62 R1/2W 34 HOLD 3.9K TRIAC 2...
  • Page 56 CIRCUIT DIAGRAM [NON-PUMP] BL/YW BL/YW C1 683K 250VAC 100 1W SM12JZ47 A1270 W/M RIGHT MOTOR 21 VSS R53 10 TRIAC1 62 R1/2W 104Z 3.9K RUNNING CAPACITOR 683K 30 TEST 1N5399 WH/RD 250VAC A1270 100 1W SM12JZ247 R52 9 62 R1/2W 34 HOLD 3.9K TRIAC 2...

  • Page 57: Bare Pcb

    BARE PCB BOTTOM...

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Dwf-5020 series

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