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Samsung WF906 Series, Service Manual

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Samsung WF906 Series Service Manual Download Page 37

PCB Diagram _ 35

5.  PCB DIAGRAM

5-1.  MAIN PCB

►  This Document can not be used without Samsung’s authorization.

Location

Part No.

Function

Description

1

RY1

POWER SUPPLY RELAY

Receive 230V AC to operate PBA

2

RY3

HEATER RELAY

Heater power output

3

CN4

MOTOR CONTROL TERMINAL

Motor signal output

4

CN3

REACTOR TERMINAL

Connect with the Reactor

5

CN5

DRIVING SECTION TERMINAL

Signal Output for door lock, water valve, drain pump and bubble pump.

6

CN2

POWER SUPPLY AND DOOR CHECK TERMINAL

Receive 230V AC to operate PBA and Door lock check

7

CN1

SUB PBA CONNECTION TERMINAL

Connect with SUB PBA

8

-

CONTROLLER BOARD

Control whole PBA and have Program Update terminal

6

4

7

8

5

2

3

1

Summary of Contents for WF906 Series

Page 1: ...er for the more information 1 Safety Instructions 2 3 Disassembly and Reassembly 4 Troubleshooting 5 PCB Diagram 6 Wiring Diagram 7 Reference SERVICE Manual WASHING MACHINE DRUM TYPE Basic Model WF906 SEINE PROJECT Model Name WF8 F E F500E PROJECT Model Code WF80F5E5W4W EF F500E PROJECT ...

Page 2: ...10 3 Disassembly and Reassembly 11 3 1 Tools for disassembly and reassembly 11 3 2 Standard disassembly drawings 12 4 Troubleshooting 25 4 1 Error modes 25 4 2 Corrective actions for each error code 30 5 PCB diagram 35 5 1 Main PCB 35 5 2 Circuit diagrams of main parts 36 5 3 F500 BEST 37 5 4 Detailed descriptions of contact terminals Sub PCB 38 6 Wiring diagram 39 6 1 Wiring diagram 39 7 Referenc...

Page 3: ...nnect the power plug before servicing 4 Failing to do so may result in a risk of electric shock Do not allow consumers to connect several appliances to a single power outlet at the same time 4 There is a risk of fire due to overheating When removing the power cord make sure to hold the power plug when pulling the plug from the outlet 4 Failing to do so may damage the plug and result in fire or ele...

Page 4: ...ge the PBA power terminals before starting the service 4 Failing to do so may result in a high voltage electric shock When replacing the heater make sure to fasten the nut after ensuring that it is inserted into the bracket heater 4 If not inserted into the bracket heater it touches the drum and causes noise and electric leakage AFTER SERVICING Check the wiring 4 Ensure that the wiring can not be ...

Page 5: ...ng a sharp tool or object 4 This may result in electric shock or damage to the product WHILE SERVICING When wiring a harness make sure to seal it completely so no liquid can enter 4 Take care when disconnecting connectors do not use excessive force as this may damage the connector Check to see if there is any residue that would imply liquid has entered the harnesses or electrical parts 4 If any li...

Page 6: ...ct the power cord from the power outlet and measure the insulation resistance between the power plug and the grounding wire of the washing machine The value must be greater than 10MΩ when measured with a 500V DC Megger Check whether the washing machine is level in relationship with the floor Check whether it is installed firmly on the floor 4 Vibrations can shorten the lifetime of the product CAUT...

Page 7: ...nt is completely dissolved in the water there is no need to worry about any remaining detergent residue Using a Samsung washing machine you can wash waterproof clothing without worrying about damage to material not previously washable The outdoor care course of a Samsung washing machine provides an excellent wash performance and fabric care level by minimizing damage to the waterproof material Mos...

Page 8: ...se the power of the difference in elevation only The size of holes has been reduced drastically maintaining the optimal wash performance while saving on water and electricity required for washing The structure of the holes on the diamond drum has been changed minimizing potential damage to the washing since it is difficult for strands to enter the holes Conventional Fabric Diamond Drum Fabric Eco ...

Page 9: ...ff the power automatically if a leakage occurs to prevent the danger of a fire Ceramic Heater Selected Model The ceramic heater in Samsung washing machines prevents metals in hard water from being attach to the heater which may cause a reduction in heater efficiency This helps save energy time and money Energy Savings Over time conventional heaters increase their power consumption an average of 5 ...

Page 10: ...E WF7 F E Wash Type FRONT LOADING TYPE Dimension 850 X 600 X 550 Water Pressure 50 800 Weight 61kg 61kg Wash Spin Capacity 8kg 7kg Power Consumption WASHING 220V 150W 240V 150W WASHING and HEATING 220V 2 000W 240V 2 400W Spin Revolution rpm 1 400 1 200 600 550 850 ...

Page 11: ...1000 1400 1200 Motor BLDC BLDC Control Sys General General Weight Detection 3 Stages 3 Stages Heater Capacity 2 000W 230V 2 000W 230V Water Supply Cold only Cold and Hot Cold only Cold and Hot Drainage Pump Pump Power Outage Compensation Yes Yes Zero Standby Power Yes 0 48W or Less Yes 1W or Less USP Bubble Yes Yes Eco Drum Clean Yes Yes Outdoor Care Yes Yes Quick Wash Yes Yes Liquid Detergent Box...

Page 12: ...c models only MANUAL BOOK DC68 03234A 1 WF80F5E5U4W EF CAP FIXER DC67 00307A 3 Default HOSE HANGER DC62 10278A 1 Default GUIDE LIQUID DC61 03510A 1 Default Note H is supplied for specific models only among those without water supply hoses You can purchase additional water supply and drain hoses from a service center For built in models the spanner water supply and drain hoses are not supplied Both...

Page 13: ... Shock Absorber 2 holes each in left right Damper 2 Damper friction 2 19mm Pulley 1 Double ended spanner 10mm 13mm 19mm Replaced by box driver Leg Vice pliers A Tool for protecting empty turning of bolt or abrasion from using box driver For disassembly of Spin drum Others screwdriver nipper long nose pliers Common tools for servicing Torque wrench The Tool for assembly of heater and Tub ...

Page 14: ... reference when disassembling and reassembling the product Part Figure Description Assy Cover Top 1 Remove the two screws holding the Top Cover at the back of the unit 2 Remove the top cover by lifting it up after pulling it back about 15mm Water valve Noise filter Sensor pressure 3 Now the Water pressure Sensor Noise Filter Water Valve and main PCB can be replaced ...

Page 15: ...he front operating panel 2 Remove the screws at the top of the ASSY PANEL CONTROL 3 Hold the ASSY PANEL CONTROL while pulling it upwards and release the hook to remove it 4 Disconnect the 3 terminals connected to the PCB by hand 5 Release the hooks on both sides to remove the PCB for repair replacement ...

Page 16: ...assembly and Reassembly Part Figure Description Assy Housing drawer 1 Remove this screw 2 Remove the Band ring 3 Separate the water supply valve wire 4 Remove the screws holding the water supply valve in place ...

Page 17: ...he rings on the Wire Diaphragm which connects the sprints and the wire ends Then separate the Wire Diaphragm from the Front Frame and Disconnect the Diaphragm 2 Remove the two screws holding the FRAME FRONT 3 Remove the screws holding the bottom of the FRAME FRONT 4 Disconnect the terminal for the DOOR LOCK switch ...

Page 18: ...lt and then assembly it 3 Check if the belt position is at the center of the Pulley Assembling the belt Place the belt around the Motor Pulley and then over the Pulley UNIVERSAL MOTOR 1 Separate the Wire Housing from the motor 2 Remove the bolts holding the motor at the back of the washing machine 3 Separate the motor Caution When installing the Belt around the Motor Pulley the bottom of the belt ...

Page 19: ...isassembly and Reassembly _ 17 Part Figure Description Water supply valve 1 Separate the Assy Cover Top 2 Separate the water supply valve wire 3 Remove the screws holding the water supply valve in place ...

Page 20: ...ater valve Noise filter Sensor pressure 1 Separate the Assy Top Cover 2 Disconnect the wire between the PRESSURE HOSE and the water level sensor for repair replacement 3 Push the clip of the water level sensor behind sensor to one side of the frame and pull it out to remove it ...

Page 21: ...e Description Door Hinge 1 Remove the 2 screws holding the Door Hinge and separate the door 2 Remove the 11 screws holding the Holder Glass and separate the Holder Glass 3 Remove the 4 screws holding the bracket hinge and replace the door hinge ...

Page 22: ...er through the drainage hose Place a bowl under the drainage hose or the remaining water may flow out 3 Separate the Drain Filter by turning it counterclockwise Since the remaining water may flow out place a bowl underneath it when separating the filter 4 Remove the 2 screws holding the drain pump 5 Release the BAND RING 3EA to remove the HOSE 3EA ...

Page 23: ...s 4 Check Points for Troubleshooting 1 Separate the Drain Filter and check if any alien substances are inside the pump e g coins buttons etc Remove these if found 2 Check if the wire driving the pump has come loose Take the relevant countermeasure if necessary 3 When water leaks check the assembly status of the Clamp Hose and Cap Drain Take the relevant countermeasure if necessary Turn the filter ...

Page 24: ... Diaphragm can be damaged when removing it Use a Longnose plier and remove it slowly in one direction 2 Remove the 2 screws 3 Remove the screw holding the Door Lock S W Remove the Door Lock S W Remove the connection wire Only remove the connector once the connector is released this can be done by pressing the catch Leakage Sensor OPTION 1 Disconnect two wire connectors 2 Remove the six screws hold...

Page 25: ...e heater Use box Drivers Socket size 10mm 6 Remove the Heater from the Tub Caution Make sure to insert the Heater into the correct position of the bracket inside the Tub when reassembling it Otherwise there is a danger of a fire Make sure to push the Tub inwards until the packing part comes into the Tub completely when reassembling Fasten the holding nut with a force of 5Kgf cm2 If the nut is not ...

Page 26: ...used for water proofing 4 Check Points for Troubleshooting 1 Check whether there is any error in applying the power 2 Check the voltage between the DC 5V and GND terminals 3 If an error occurs when there is no characteristic error in the electric harnesses check these points 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 ...

Page 27: ...he motor hall sensor terminal is not connected PBA fault For USA products this error occurs when an interference is generated due to too much laundry etc 3E2 3E2 The motor driving error from the PBA is weak Unstable relay operation etc 3E3 3E3 bE This occurs due to erroneous operating signals for the motor hall sensor The IPM terminal of the main PBA is not connected The DD motor cover is out of p...

Page 28: ...Plo PF This error is not a fault but occurs during a momentary power failure If started again when this error code is displayed the operation restarts from the cycle that was stopped due to the power failure If the washing machine is not operating and this error code is displayed it is displayed to notify that a power failure has occurred Communication Error AE 13E The signals between the sub and ...

Page 29: ...e door lock switch terminal is broken This occurs intermittently because of an electric wire leakage Main PCB fault FL Lock Fail dE2 dE2 This occurs if the Power switch is turned on off continually and too much heat is generated This error is difficult to be reproduced Heater Error HE HE E5 Hr Heater Relay The washing heater is short circuited or has a wire disconnected The washing heater in the t...

Page 30: ...ter level sensor is degraded For USA products this error occurs because the water level sensor terminal is out of place Temperature Sensor Error tE1 tE1 6E tE The washing heater in the tub has an error Contact error temperature sensor fault The connector is connected incorrectly or is disconnected If the water level sensor operates without water because the water is frozen or for any other reason ...

Page 31: ...hen too much foaming is detected It is also displayed while foaming is removed When the removal is finished the normal cycle proceeds Sud or SUdS is displayed when too much foaming is detected and End is displayed when the removal of the foaming is finished This is one of the normal operations It is an error for preventing non sensing faults ...

Page 32: ...nsor and the connector are connected Frequency Approx 26 1 KHz with no load Washing Motor Error and Hall Sensor Error 3E 3E1 3E2 3E3 3E4 Washing motor fault Washing motor hall sensor fault Incorrect connections of the washing motor hall sensor connector Washing motor rotor and stator fault Main PCB fault Check the motor connector terminal connections and contacts 3E1 is displayed because overloadi...

Page 33: ...ragm Drain Error 5E Drain pump fault Freezing in the winter season Foreign materials in the drain pump Main PCB fault Check whether the revolutions of the drain pump motor are restrained by foreign material Check the same thing for the natural drain process Check whether the connections are correct and if there is any wires disconnected If the drain pump operates abnormally intermittently when the...

Page 34: ...replace the main PBA GAP Check the contact between the control panel buttons and their corresponding tact switch There must be a gap between a control panel button and its corresponding micro switch Otherwise an error occurs after approx 30 seconds has passed Cooling Error CE Washing Temperature sensor fault Description of PL hazard prevention This error occurs if the water temperature is more tha...

Page 35: ...heck the door switch voltage Check the voltage after the power is on That is check the door switch when the power button is turned on and no operating key is pressed 3 5 TYPE 2 The resistance of Nos 3 and 5 of the DOOR LOCK SWITCH must be approximately 1000Ω 50 Heater Error HE HE1 HE2 HE3 Heater fault A fault of the temp sensor located between the heater terminals Steam function fault Freezing in ...

Page 36: ...k whether the hose is folded cut or damaged Temperature Sensor Error tE1 tE2 tE3 Washing temperature sensor fault Dry temperature sensor fault Faulty and incorrect connections of the dry condensing sensor Main PCB fault Freezing in the winter season Check the connections for the washing heater temperature sensor connector If the washing heater temperature sensor has a functional error replace it A...

Page 37: ...utput 3 CN4 MOTOR CONTROL TERMINAL Motor signal output 4 CN3 REACTOR TERMINAL Connect with the Reactor 5 CN5 DRIVING SECTION TERMINAL Signal Output for door lock water valve drain pump and bubble pump 6 CN2 POWER SUPPLY AND DOOR CHECK TERMINAL Receive 230V AC to operate PBA and Door lock check 7 CN1 SUB PBA CONNECTION TERMINAL Connect with SUB PBA 8 CONTROLLER BOARD Control whole PBA and have Prog...

Page 38: ...r Program Update 9 Tx for Program Update 10 Rx for Program Update 11 BOOT signal for Program Update CN5 1 N C 2 Bubble Pump 3 Drain Pump 4 N C 5 Door Lock 6 N C 7 PRE VALVE 8 COLD VALVE 9 HOT VALVE 10 N C Relay RY3 Heater Relay Relay RY1 Power Relay CN3 1 Reactor Connection 2 Reactor Connection CN2 1 Power Signal 2 Door lock unlock Check Signal 3 N C CN1 1 Main Tx Sub Rx Signal 2 Main Rx Sub Tx Si...

Page 39: ...onnect with MAIN PCB 2 BZ1 BUZZER Make sound for key input or program finish etc 3 DSP1 GRAPHIC DISPLAY Display information about selected Operation Mode 4 CN1 PROGRAM UPDATE TERMINAL Terminal for program update 5 3 F500 BEST This Document can not be used without Samsung s authorization 2 1 4 3 ...

Page 40: ...5V signal 7 Water Level Signal From SUB PBA 8 Main Relay Watchdog 9 N C 10 N C 11 Water Thermistor 12 GND 13 Water Level Input 14 Water Level Input 15 Leakage Sensor signal CN3 1 Touch Sensor signal 2 Touch Sensor Signal 3 Touch Sensor Signal 4 15V for Touch Sensor 5 Touch Sensor Signal 6 Touch Sensor Signal 7 N C 8 GND CN1 1 5V for Program Update 2 Reset signal for Program Update 3 signal for Pro...

Page 41: ...GRAM 6 1 WIRING DIAGRAM This Document can not be used without Samsungs authorization n REFERENCE INFORMATION BLK BLACK BLU BLUE GRN GREEN GRY GRAY NTR NATURAL ORG ORANGE PNK PINK RED RED SKYBLU SKYBLUE VIO VIOLET WHT WHITE YEL YELLOW ...

Page 42: ... 80 8kg 70 7kg Color White W InoX X Buyer Code Series 9 7 High 6 4 Mid 1 3 Entry Region A N America L L America E Euro R CIS M M E Asia F Africa S S E Asia H India C China J Japan K Korea Feature 1 G LED TOC 5 G LED Luminus Resign 4 G LED White 3 D LED TOC 2 D LED Luminus Resign 1 D LED White 0 Feature 2 Bubble Inverter U Inverter B Bubble Aqua Hose L S Universal Q Bubble Aqua Hose L S Inverter P ...

Page 43: ...msung Electronics Co Ltd Any unauthorized use of Manual can be punished under applicable International and or domestic law GSPN GLOBAL SERVICE PARTNER NETWORK Area Web Site Europe CIS Mideast Africa gspn1 samsungcsportal com Asia gspn2 samsungcsportal com North Latin America gspn3 samsungcsportal com China china samsungportal com ...

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