SAMSUNG Clothes Washer EURO K4 - PJT TRAINING MANUAL

1. EURO K4 - PJT TRAINING MANUAL July. 2007 SAMSUNG Clothes Washer Digital Appliances Division

3. 1-1. Concept 1.Product Introduction ▶ Low vibration & noise ▶ Stylish Design ▶ Innovative 2nd Hauzen image ▶ Embossing Drum ▶ Convenient Control – panel design Design Point Theme Function ▶ Air Wash ▶ Skin Care -> Silver Nano Health Care System ▶ Time Saving -> Rinse : 3 times  2 times -> Stream Line Optimized Drying Duct (Drying time 25% ↓)

4. 1-2. Specification 1.Product Introduction 92kg 85kg WASHER COMBI 1100 Rpm 1900W 2200W 150 W DRYING WASHING and HEATING 95kg GROSS WD7101CKW/WF7101SKS MODEL SPIN REVOLUTION WASHING POWER CONSUMPTION 88kg NET WEIGHT FRONT LOADING TYPE WASH TYPE 110 ℓ WATER CONSUMPTION 10kg (DRY LAUNDRY) WASH & SPIN CAPACITY 650mm X 765mm X 940mm DIMENSION

11. ON/OFF If you want to activate or exit Child Lock, press both Soil Level and Signal buttons at the same time for 3sec. How to Activate: 1. It can be activated during the power-on or the washing. 2. If you activate Child Lock during the laundry operation, all buttons except the Power button are to be locked until you exit Child Lock. 3. The Child Lock lamp will light up. Notice: 1. Instant power failure does not shut down Child Lock. It will keep on working when power comes back on. 2. When buttons do not work except for the Power button, check if Child Lock is on. 2-2. Child Lock 3.Instruction of Function It is possible to add or take out laundry during water supply with the Garment + lamp illuminating. If push Start/Pause button, the door is unlocked immediately. In case of too hot or too much water in washer, the door can not be opened. After closing the door, one more push Start/Pause button to make washing process going on continuously. 2-3. Garment+

12. 4. Error Check

13. 4. Error Check

14. 4. Error Check

15. 4. Error Check

16. 5-1. Technology 5.Reference Information 1) ASSY-MAIN PCB (Imbalance Sensor) To prevent the laundry from gathering on one side of the tube causing noise and vibration, the washing machine uses an imbalance detection device that evenly disentangles the laundry before the hydrating cycle starts. 2) DOOR-LOCK S/W Prevents the door from being opened while a cycle is in progress. For safety purposes, it keeps the door locked even in pause mode or after the washing cycle unless the water level frequency is greater than 24.8Khz (anti-overflow level) or the inside-tube temperature is less than65ºC in the hydrating cycle, and 55ºC in the washing cycle. 3) SENSOR-PRESSURE (Anti Over-Flow) When the water supplied is more than 2/3 of the tube capacity due to a malfunction of the water supply valve, this device automatically starts water-draining and displays “OVER-FLOW ERROR(E3)”on the LED. 4) THERMISTOR Keeps sensoring and controlling the temperature inside the tube to keep it below your settings.

17. 5-1. Technology 5.Reference Information 5) ASSY-THERMAL FUSE (Anti Over-Heat) When the washing heater is overheated due to an error in the thermistor or any other malfunction, the assy-thermal fuse (built in the heater) is automatically activated to disconnect the power for your and the product’s safety. 6) ASSY-MAIN PCB (Sensitive Laundry Protection) To avoid any damage to sensitive laundry, the tube temperature is detected and “ ERROR(E8)” is displayed on the LED for Wool or Lingerie courses when the temperature is over 50. 7) THERMOSTAT (Anti Over-Heat) When the heater (drier) overheats from an error in the thermistor or any other malfunction, the thermostat (installed on the drying duct) is automatically activated to disconnect the power for your or product’s safety 8) CHILD LOCK Prevents children from playing with the washing machine.

18. 5-1. Technology 5.Reference Information 9) PRE-WASH The machine does a preliminary wash of about 10 minutes prior to the main wash. This is particularly effective for cleaning badly stained laundry. 10) WEIGHT SENSOR The tube automatically rotates when no water is supplied to detect the laundry weight so that the proper wash time can be determined. (Standard, Boiling, Economy Boil and Dirt courses and Toweling and Drying cycles)

19. 5-2. Wiring Diagram 5.Reference Information

20. 5-3. Schematic Diagram (Main PCB) 5.Reference Information

21. 5-3. Schematic Diagram (Main PCB) 5.Reference Information

22. 5-3. Schematic Diagram (Main PCB) 5.Reference Information SUB MICOM MAIN MICOM MAIN RELAY POWER CIRCUIT * ERROR CONTROL * TEST MODE CONTROL * Normal Opera- -tion MODE CONTROL * UART Communication Control DRIVING PART DRY FAN MOTOR DRAIN PUMP WATER VALVE(COLD) WATER VALVE(HOT) WATER VALVE(PRE) WATER VALVE(STEAM) HEATER(WASH) HEATER(DRY) HEATER(STEAM) DOOR LOCKING PART DOOR LOCK DOOR UNLOCK OPEN DOOR SENSING LOCK DOOR SENSING Ag+ Kit Ag+ Generator SENSOR WATER LEVEL SENSOR MAIN MOTOR MAIN PCB SUB PCB Bar Lighting LED Control Part OPTION Display Part Sound 3E FE OSCILLATOR RESET CIRCUIT VOLTAGE SENSING (DC) VOLTAGE SENSING (AC) EEPROM * EEPROM CONTROL * POWER CONTROL * MAIN MOTOR CONTROL * DRIVING SYSTEM CONTROL * DOOR CONTROL * Ag+ KIT CONTROL * Water Level Sensor Frequency Sensing * AD Converter CONTROL FAN MOTOR EXCESS CURRENT SENSING DRIVE CONTROL CIRCUIT Ag+ CONTROL SIGNAL Water Temperature SENSOR Air Temperature SENSOR Dry Temperature SENSOR Display & Sound Data Button, Sound HOLE SENSOR * UART Communication Control * Button Input Sensing * Display Control * Sound Control Button Input Dial Input AE bE 4E 5E UE HE EPng 9E DE ㅂ E IE OE TE UVW XYZ U V W IPM BLDC MOTOR COTROL MOTOR EMG ERROR SENSING * Normal Ope- -ration STATE PRE WASH WASH RINSE DEHYD- -RATION DRY POWER SWITCH

23. 5-4. Nomenclature 5.Reference Information

25. Move MOTOR FIGURE DESCRIPTION PART NAME 6.Disassembly & Reassembly 3. Remove the M19 nut washer and then remove the rotor. (Pulling out the rotor requires some force and is pulled out suddenly rather than slowly. Be careful, as the stator when pulled out, may cause damage to the corners of the frame, or injury to your hands or arms.) Disconnect the wires connected to the motor. To remove the connector, press the navel of the housing and pull it towards the inside. 4. Remove the motor wire and hall sensor while holding down the navel of the housing.  Be cautious when handling as the hall sensor is susceptible to shock.

26. Move MOTOR FIGURE DESCRIPTION PART NAME 6.Disassembly & Reassembly 5. Unfasten the six (6) M10 screws.  Remove the assy bracket motor.  Remove the stator. * When unfastening the last one of the six (6) screws, hold the stator by hand to prevent it from falling due to its weight. CHECK-POINT 1) Check whether there are any foreign substances between the rotor and the stator. 2) Check whether the motor power wires (blue, while, red) are connected correctly. 3) Check whether the hall sensor wire is connected correctly. * Connect the motor power wires in the order blue, white and red, starting from the furthest right. Check whether each voltage between blue and white, white and red, red and blue is 15 Ω.

27. Move HEATER PUMP-DRAIN FIGURE DESCRIPTION PART NAME 6.Disassembly & Reassembly 2. Remove the connecting wire. - Remove the thermostat which is fixed at the bottom of the tub. (Be careful as there may be water remaining.) You MUST remove the thermostat BEFORE removing the heater. If you remove or assemble in the reverse order, the thermostat may receive a shock and become damaged. 3. Loosen the nut that holds the heater in place with a M10 tool. Remove the heater. (Rather than unfasten it completely, loosen the nut that holds the heater in place to the end. After loosening it, pull the heater towards the front. However, a shock to the heater may cause a malfunction. Therefore, do not use pincers or nippers. Pull it out with your hands swinging a little.)

28. Move HEATER FIGURE DESCRIPTION PART NAME 6.Disassembly & Reassembly 4. Remove the heater from the tub. * Assembling Precautions Make sure to correctly position the heater onto the bracket inside the tub. Incorrect positioning may cause fire. When assembling, fully insert the heater until the packing is completely engaged inside the tub so that the packing adheres completely to the tub. CHECK-POINT 1) Check whether the resistance of the heater is 27.1 Ω for the 1900W unit, and 26.2 Ω for the 2000W unit. 2) Check whether the resistance of the thermister is 12k Ω (at room temperature).

29. Move COVER-PCB(M) MAIN-PCB FIGURE DESCRIPTION PART NAME 6.Disassembly & Reassembly 1. Remove the back cover and unfasten the screws that hold the main PCB in place. 2. Remove the PCB cover inside. Remove the wire harness connector which is connected to the PCB. Remove the reactor wire.

30. Move MAIN-PCB FIGURE DESCRIPTION PART NAME 6.Disassembly & Reassembly 3. Replace the main PCB.  You cannot remove the PCB separately because urethane is used for water proofing. CHECK-POINT 1) Check whether there is any error in applying the power. 2) Check the voltage between the DC 5V and GND terminals. KΩ 3) If an error occurs when there is no characteristic error in the electric harnesses, check these points: 3E error: The resistance of motor(U-V/V-W/W-U) is 15 Ω HE/HE1 error: The resistance of heater(for 1900W unit) is 27 Ω DE1 error: The resistance of door switch is 140 to 145 Ω HE/HE1 error: The resistance of thermostat is 0 Ω 5E error: The resistance of drain motor is 400 Ω 4E error: The resistance of water valve is 4.4 Kω`

31. Move ASSY-DRAWER COVER-TOP FIGURE DESCRIPTION PART NAME 6.Disassembly & Reassembly Unfasten the two (2) hexagonal crews that hold the top cover in place. Remove the top cover by sliding it Towards the back. 3. Remove the detergent drawer by pressing the detergent drawer’s sky blue separation button.

32. Move ASSY-PANEL CONTROL FIGURE DESCRIPTION PART NAME 6.Disassembly & Reassembly 4. Unfasten the three (3) screws at top of the control panel. Unfasten the two rubber caps and screws at the front. 5. Remove the control panel by snapping it and pulling it up, and remove the wire connected to the sub PCB. Unfasten the five (5) screws that hold the sub PCB assy in place and remove the sub PCB assy. CHECK-POINT - Under the conditions that the assembly is engaged and the power is applied, enter Test mode by pressing the Power, Rinse, and Spin buttons at the same time.  -> Ensure that all LEDs are lit.

33. Move ASSY-DOOR FIGURE DESCRIPTION PART NAME 6.Disassembly & Reassembly 1. Unfasten the two (2) screws that hold the hinges of the front cover in place. 2. Remove the door assy by lifting it up a little.

34. Move ASSY-COVER FRONT ASSY-DOOR FIGURE DESCRIPTION PART NAME 6.Disassembly & Reassembly . Remove the thirteen (13) screws that hold the door cover in place. Under the condition that the control panel is removed, unfasten the two (2) screws at the top and the four (4) screws at the bottom. * When assembling the front cover, first hook the front cover to the bottom of the frame, and then align the assembling clamps into the holes and pull the front cover into the frame.

36. Move Door-Lock S/W FIGURE DESCRIPTION PART NAME 6.Disassembly & Reassembly Remove the three (3) screws that hold the door S/W in place. Remove the door S/W. Remove the three (3) wires. (When removing the connector, press on the hook to disengage the clamp and remove it.) * CHECK-POINT 1) Check whether the door S/W On/Off is working correctly (a ‘click’ is heard) by pressing both the Silver Wash and the Wash buttons in test mode. (Press the Spin, Dry, and Power buttons at the same time to enter test mode.) 2) If a “click” is heard and the door is not locked, check whether the white structure in the “A” area has a fault. You can remove the front frame by unfastening the seven (7) screws on both sides and the single (1) screw at the bottom. When assembling, hook the door lock S/W assy to the frame at the bottom and project the end of the lever for the assy through the hole at the bottom of the front frame. Then proceed with the assembly work.

38. Move ASSY-DUCT CONDENSER FIGURE DESCRIPTION PART NAME 6.Disassembly & Reassembly Remove the six(6) screws holding the respective housings in place and remove the five(5) housings(blue). Remove the dry motor assembled with the cover-housing (U/R) and remove M10, as shown in the figure * Error Checkpoints 1. Revolve the dry motor manually and check whether its revolutions are restrained. 2. Measure the internal resistance (between the white and blue wire terminals)

39. Move ASSY-DUCT CONDENSER FIGURE DESCRIPTION PART NAME 6.Disassembly & Reassembly Remove the connector. Remove the jacks connected to the thermostat and remove the four(4) screws, as shown in the figure. * Error Checkpoints Measure the resistance between both ends of the thermostat : 0 Ω -> If the stud is raised due to overheating and it is pressed, it will be returnes to the original position with a ‘snapping’ sound Remove the six(6) screws at the sides of the upper plate and remove the upper plate Remove the tow(2) screws connected to the dry duct and remove the blue thermistor

40. Move ASSY-HOUSING DRAWER FIGURE DESCRIPTION PART NAME 6.Disassembly & Reassembly 1. Remove the top cover. 2. Unfasten the three (3) screws at the top. 3. Remove the silver nano kit wire and hoses, and remove the detergent drawer. CHECK-POINT 1) Check whether there is a gap between the top plate and the bottom housing. -> Gaps may cause leakages. 2) Check the resistance between the terminals of the silver nano kit

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