Samsung wa48h7400aw User manual

WASHING MACHINE (TOP-LOADING) CONTENTS
SERVICE Manual
WASHING MACHINE
TOP-LOADING TYPE
Basic Name : WA48H7400AW
(WA7000H PJT)
Basic Code : WA48H7400AW/A2
Model Name : WA48J7700AW
WA48J7770AP
WA48J7770AW
(WA7700J PJT)
Model Code : WA48J7700AW/A2
WA48J7770AP/A2
WA48J7770AW/A2
1. Safety Instructions
2.FeaturesandSpecications
3. Disassembly and Reassembly
4. Troubleshooting
5. PCB Diagram
6. Wiring Diagram
7. Reference

CONTENTS
1. Safety instructions ...................................................................1
1-1. Safety instructions for service engineers ...............................................1
2. FeaturesandSpecications ...........................................................5
2-1. Features ........................................................................5
2-2. Specications ....................................................................6
2-3. Detail features ...................................................................7
2-4. Optionsspecications .............................................................8
3. Disassembly and Reassembly .........................................................9
3-1. Tools for disassembly and reassembly ................................................9
3-2. Standard disassembly drawings ....................................................10
4. Troubleshooting ....................................................................19
4-1. Error modes ....................................................................19
4-2. Corrective actions for each error code ................................................23
4-3. The installation for leveling.........................................................27
5. PCB diagram.......................................................................29
5-1. Main PCB .....................................................................29
5-2. Detailed Manual for Connector and Relay Terminal Part - Main PCB ........................30
5-3. Sub PCB ......................................................................31
5-4. Detailed Manual for Connector Terminal Part - Sub PCB .................................32
6. Wiring diagram .....................................................................33
6-1. Wiring diagram .................................................................33
7. Reference .........................................................................34
7-1. Model Number Naming Rules ......................................................34

Safety Instructions _ 1
1. SAFETY INSTRUCTIONS
1-1. SAFETY INSTRUCTIONS FOR SERVICE ENGINEERS
► Besuretoobservethefollowinginstructionstooperatetheproductcorrectlyandsafelytopreventpossibleaccidents
and hazards while servicing.
► Twotypesofsafetysymbols,WarningandCaution,areusedinthesafetyinstructions.
WARNING
Hazards or unsafe practices that may result in severe personal injury or death.
CAUTION
Hazards or unsafe practices that may result in minor personal injury or property damage.
BEFORE SERVICING
• (Whenservicingelectricalpartsorharnesses)Makesuretodisconnect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re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reorelectricshock.
• Whenthewashingmachineisnotbeingused,makesuretodisconnectthepowerplug
from the power outlet.
4 Failingtodosomayresultinelectricshockorreduetolightning.
• Donotplaceorusegasoline,thinners,alcohol,orotherammableorexplosivesubstancesnearthewashing
machine.
4 Thereisariskofexplosionandrecausedfromelectricsparks.
WARNING

2 _ Safety Instructions
WHILE SERVICING
• Checkifthepowerplugandoutletaredamaged,attened,cutorotherwisedegraded.
4 Iffaulty,replaceitimmediately.
Failingtodosomayresultinelectricshockorre.
• Completelyremoveanydustorforeignmaterialfromthehousing,wiringandconnectionparts.
4 Thiswillpreventariskofreduetotrackingandelectricalhazard..
• Whenconnectingwires,makesuretoconnectthemusingtherelevantconnectorsandcheckthattheyare
completely properly.
4 Iftapeisusedinsteadoftheconnectors,itmaycausereduetotracking.
• Makesuretodischarge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.
4Ensure that no wire touches a rotating part or a sharpened part of the electrical harness.
• Checkforanywaterleakage.
4 Performatestrunforthewashingmachineusingthestandardcourseandcheckwhetherthereisanywater
leakagethroughtheoorsectionorthepipes.
• Donotallowconsumerstorepairorserviceanypartofthewashingmachine
themselves.
4This may result in personal injury and shorten the product lifetime.
• Ifitseemsthatgroundingisneededduetowaterormoisture,makesuretorun
grounding wires.
(Checkthegroundingofthepoweroutlet,andadditionallygroundittoametallicwater
pipe.)
4 Failingtodosomayresultinelectricshockduetoelectricleakage.
[Running a grounding wire]
- Twistagroundingwire(copperwire)twoorthreetimesaroundthetap.
- Ifyouconnectthegroundingwiretoacopperplate,buryit75cmundertheearthina
place with a lot of moisture.
 Donotconnectthegroundingwiretoagaspipe,plasticwaterpipeortelephone
wire.Thereisariskofelectricshockorexplosion.
Grounding
terminal
75 cm
Copperplate
WARNING
WARNING

Safety Instructions _ 3
BEFORE SERVICING
• Donotsprinklewaterontothewashingmachinedirectlywhencleaningit.
4 Thismayresultinelectricshockorre,andmayshortentheproductlifetime.
• Donotplaceanycontainerswithwateronthewashingmachine.
4 Ifthewaterisspilled,itmayresultinelectricshockorre.Thiswillalsoshortenthe
product lifetime.
• Donotinstallthewashingmachineinalocationexposedtosnoworrain.
4 Thismayresultinelectricshockorre,andshortentheproductlifetime.
• Donotpressacontrolbuttonusing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 Makesurethattheydonotbreakwhenforceisexerted.
• Checkifthereisanyresiduethatshowsthatliquidenteredtheelectricpartsorharnesses.
4 Ifanyliquidhasenteredintoapart,replaceitorcompletelyremoveanyremainingmoisturefromit.
• Ifyouneedtoplacethewashingmachineonitsbackforservicingpurposes,placeasupport(s)ontheoorandlayit
downcarefullysoitssideisontheoor.
4Do not lay it down on its front. This may result in the inside tub damaging parts.
CAUTION
CAUTION

4 _ Safety Instructions
AFTER SERVICING
• Checktheassembledstatusoftheparts.
4 Nowisagoodtimetoinspectyourwork.Reviewallconnectionsandwiring,includingmountinghardware.
• Checktheinsulationresistance.
4Disconnect 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theoorwithrespecttotheoriginalposition
of the washing machine prior to service.
By doing this now will reduce for the need of customer dissatisfaction and redo call.
4Vibrations can shorten the lifetime of the product.
CAUTION

FeaturesandSpecications_5
2. FEATURES AND SPECIFICATIONS
2-1. FEATURES
Features Description
The Great Capacity • Evenbulkygarmentsandblanketsgetsuperclean.TheGreatcapacity
leavesenoughroomforamorethorough,cleanerwash.
AquaJetTM
• AquaJet™washesloadsgentlyandmorethoroughlythanconventionaltop
loaders. Sprayed water allows detergent to distribute evenly and penetrate
fabricsfasteranddeeper.AquaJet™deliversimprovedcleanlinessand
advanced fabric care.
DD Motor
• Thepowertohandleanything!Ourdirect-driveinvertermotordeliverspower
righttothewashertubfromavariablespeed,reversiblemotor.Beltless
direct-drivemotorgeneratesahigherspinspeedformoreeffective,quiet
operation.Thewasheralsohasfewermovingparts,meaningfewerrepairs.
Mist Shower • Aseparatenozzlehasbeenadoptedthatsprayswaterequallysothatthe
rinse cycle is effective even with a small amount of water.
VRT®
(VibrationReductionTechnology)
• ThisSamsungwasherperformssmoothlyattopspinspeeds,minimizing
noise and vibration.
Eco Plus • Ifyouselectthisoption,thewatertemperatureissettoslightlylowerthan
during the normal wash course to save energy.
Self Clean
(TubCleaningcycle)
• Cleanyourdrumwithonebutton!ThisPureCycleisspeciallydesignedto
removedetergentresidue&dirtbulidupinthetub,withouttheneedfor
special chemical detergents.
EZ-Closed Lid • Thedoorisdesignedtoclosesoftlyandpreventusersfrombeinginjured
My Cycle
• Thisisaconvenientfunctionthatenablesyoutosaveafrequently-used
washcourse.Oncethisisset,youcandoawashsimplybypressingthe
Power,MyCycleandStartbuttonsinthissequence.
Smart Care • Samsung’sSmartCare,anautomaticCheck-monitoringsystem,detectsand
diagnosesproblemsatanearlystageandprovidesquickandeasysolutions.
Prewash
(WaterJet&Built-insink)
• WaterJetandBuilt-insinkhelpyouhandwashbeforethewashingmachine
startsoperation.WaterJetisavailableonlywhenthedoorisopenwiththe
waterlevelsettolessthanHigh.Forprewashing,usetheBuilt-insinkthatis
designed to facilitate the hand-wash.

6_FeaturesandSpecications
2-2. SPECIFICATIONS
TYPE TOP LOADING WASHER
DIMENSION
(Inches/cm)
A.Height 43.9″/111.5cm
B. Width 27.0″/68.6cm
C. Height with Door open 58.1″/147.6cm
D. Depth 29.3″/74.4cm
WATERPRESSURE 20~116psi(137~800kPa)
WEIGHT 64.0kg(141.1lb)
CAPACITY 4.8cu.ft
POWER
CONSUMPTION
WASHING 120V 700W
SPIN 120V 400W
DRAIN 120V 80W
SPINREVOLUTION 1,100rpm
C
B
A
D

FeaturesandSpecications_7
2-3. DETAIL FEATURES
Grade WA48J7700A*
WA48J7770A* WA48H7400AW
Image
Main Spec.
Capacity(DOE) 4.8 4.8
AquaJetTM Yes Yes
Smart Care Yes Yes
Diamond interior
drum Yes Yes
Self Clean Yes Yes
Washing Cycles 11 11
Internal Heater - -
VRT®Yes Yes
Pulsator material STS STS
Maxrpm
(Maxspinspeed) 1,100 1,100
Mist Shower Yes Yes
Motor DD DD
Design
Color White
Inox Neat White
Main display 18:88 18:88
JogDial Chrome Chrome
LED color Ice-blue Ice-blue
Door Lid TC Transparent Glass Tempered Tinted glass
Easy door Yes Yes
Top Cover Steel(EGI)+Painting Steel(EGI)+Painting
Energy
EstimatedYearly
Operating Cost
(whenusedwith
an electric water
heater)
$15
EstimatedYearly
Energy Cost
(whenusedwith
an electric water
heater)
$17
EstimatedYearly
ElectricityUse 129kWh EstimatedYearly ElectricityUse 145kWh
EstimatedYearly
Operating Cost
(whenusedwitha
natural gas water
heater)
$9
EstimatedYearly
Energy Cost
(whenusedwitha
natural gas water
heater)
$11

8_FeaturesandSpecications
2-4. OPTIONS SPECIFICATIONS
Item Item Name Code No. Remark
HOSE-HANGER DC61-00224A Default
MANUAL-BOOK DC68-03132L Default
CABLETIE 6501-000121 Default
ASSYCAPV.W DC97-18313A Default
ASSY-LEGSUPPORT DC97-14095A Service
Note
• CustomercanpurchaseWatersupply,drainhosesandassylegsupportfromaservicecenter.

Disassembly and Reassembly _ 9
3. DISASSEMBLY AND REASSEMBLY
3-1. TOOLS FOR DISASSEMBLY AND REASSEMBLY
Tool Type Remarks
Boxdriver 10mm
17mm
Tub(16),Fixerscrew(5),Motor(1),Balance(5)
Damper(2),Damper(friction1)
Double-ended
spanner
10mm
17mm
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
JIGfortheASSYSPIN
BASKET

10 _ Disassembly and Reassembly
3-2. STANDARD DISASSEMBLY DRAWINGS
► Thisisastandarddisassemblydiagramandmaydifferfromtheactualproduct.
Usethismaterialasareferencewhendisassemblingandreassemblingtheproduct.
Part Figure Description
Sub and Main PCB
Assembly
1. Remove the 6 screws holding the control
panel assembly.
2. Separatethebothhooks.(LeftandRight)
3. Separate the cover panel upward.
 Ifitisdifculttodisassemble,usethe(-)
drivertodisassemblehooks.
(Becarefuldamageofhooks.)
4. Remove the 2 screws holding the control
panel assembly and turn the panel over.
5. PulltheEncoder-Knobtoseparateitand
thenremovethe4xingscrews.
 WhenreassemblingthePCB,takecare
that you do not damage the control-panel
xinghook.AfterreplacingthesubPCB,
checkthekeyoperation.
6. Separatethecoverpcb(m)andthewires
connectedtothemainPBA.
 Afterreassemblingthehousing,check
if the wires are properly connected.
When disassembling and reassembling
thehousing,takecarethatyoudonot
damage the part.

Disassembly and Reassembly _ 11
Part Figure Description
Water Valve
1. Afterseparatingthecontrolpanel,separate
the water-valve housing.
2. Removethe3xingscrews.
3. Remove the wire-harness and release the 2
clamps connecting the hoses.
 Whenreleasingtheclamps,takecare
that you do not tear the hoses.

12 _ Disassembly and Reassembly
Part Figure Description
Door Assembly
1. Remove the 2 inlay tapes.
2. Remove the 4 screws holding the door
lid TC and separate the door.

Disassembly and Reassembly _ 13
Part Figure Description
Top Cover Assembly
/ Door Switch
1. Remove the 2 screws from the cover
plate.
2. Separate the control panel assembly.
3. SeparatetheAssyValveWater,themain
PBA,theAssySensorPressureandthe
lterEMIhousing.
Separate the housing to prevent
stress and damage to the wire-
harness.
4. Separatethemainwireharness,the
pressureswitchhoseclip,Grounding
screw .
5. Release the bleach hose clamp.
6. Separate the top cover assembly by
lifting and pushing ahead the top part of
the assembly.
7. youcancheckthedoorswitchIfturnthe
Top cover upside down.
Sensor Pressure
Switch
1. Disassemble the control panel assembly.
2. Separate the pressure switch housing.
3. Beforeseparatingthehose,releasethe
clip.
 Whenreleasingtheclip,takecare
that you do not tear the hose.

14 _ Disassembly and Reassembly
Part Figure Description
Drain-Pump
1. Separatethebackcover
2. Separate 2 clamps.
3. Remove the 13 screws in base.
4. Remove the 3 screws
5screwsareseparatedby‘+’shapehand
driver.
Thermistor 1. Remove the 2 screws.

Disassembly and Reassembly _ 15
Part Figure Description
Clutch Assembly
(continued)
1. Separate the top cover assembly by
lifting and pushing ahead the top part of
the assembly
2. Remove the 2 screws holding the panel
control Separate all the wires connected
to the housing.
3. Removethe4screwsxingthetub-
cover and separate the tub-cover.
4. Separate the pulsator-cap by inserting
thetipofa(-)screwdriverbetweenthe
pulsator-cap and the pulsator and then
liftingthescrewdriverup(↑).
5. Remove the bolt holding the pulsator
with a 10mm wrench.

16 _ Disassembly and Reassembly
Part Figure Description
Clutch Assembly
(continued)
6. Remove the shaft with the jig wrench.
-Releasethenutinaclockwisedirection.
-Fastenthenutinacounterclockwise
direction.
7. Place the main body so that the front
frame faces upward and remove the 4
bolts holding the saddle with a 10mm
wrench.
When you place the washer on
theoor,takecarethatyoudonot
damage or scratch the product.
8. Remove the bolt holding the DD-motor
housing with a 17mm wrench and then
remove the motor housing.
9. Remove the 6 bolts holding the DD-
motor with a 10mm wrench.

Disassembly and Reassembly _ 17
Part Figure Description
Clutch Assembly
(continued)
10.Separatethe2markedhousingsand
then remove the DD-motor.
11.Pressthehooktoseparatethehousing.
12. Separate the slide guide and the
coupling by pulling them forward.
Disassemble the coupling and the
spring.

18 _ Disassembly and Reassembly
Part Figure Description
13.Removetheallscrewsxingtheclutch
assembly and then separate the clutch
assembly.
Reassembly procedures are in the reverse order of dissasembly procedures.