Samsung DW80M9960US/AC, DW80M9960US/AA, DW80M9960UG/AC, DW80M9550US/AC, DW80M9990US/AA Service Manual

DISHWASHER

Model Name : DW80M9*** Series
Model Code :

SERVICE

DW80M9960US/AA
DW80M9550US/AA
DW80M9960UG/AA
DW80M9550UG/AA
DW80M9960US/AC
DW80M9960UG/AC
DW80M9550US/AC
DW80M9990US/AA
DW80M9990UM/AA

Manual

DISHWASHER CONTENTS

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

2-3. ComparingSpecicationswithExistingModels ......................................... 7

2-4. OptionsSpecications ............................................................8

................................................................... 6

3. Disassembly and Reassembly

3-1. ToolsforRemovalandReassembly ..................................................9

3-2. Preparationforpartsreplacement ..................................................10

3-3. RemovingTheUpperRack .......................................................10

3-4. CheckpointsafterFinishingService ................................................. 33

4. Troubleshooting ....................................................................34

4-1. Preparation ....................................................................34

4-2. ServiceInspectionMode .........................................................39

4-3. Checkcodetroubleshooting ......................................................45

5. PCB Diagram ......................................................................54

5-1. MainPCB ..................................................................... 54

5-2. PCBDiagram .................................................................55

6. Wiring Diagram ..................................................................... 56

6-1. WIRINGDIAGRAM ............................................................56

7. Reference .........................................................................58

7-1. ModelNumberNamingRules .....................................................58

7-2. Terminology ..................................................................59

.......................................................... 9

1. SAFETY INSTRUCTIONS

1-1. SAFETY INSTRUCTIONS FOR SERVICE ENGINEERS

ሪ Make sure to observe the following instructions to operate the product correctly and safely and prevent possible

accidents and hazards while servicing.

ሪ Two types of safety symbols, Warning and Caution, are used in the safety instructions.

Warning

Caution

Hazards or unsafe practices that may result in severe personal injury or death.

Hazards or unsafe practices that may result in minor personal injury or property damage.

Warning

Before Servicing

ࣃ (When servicing electrical parts or harnesses) Make sure to disconnect the circuit breaker or power cable before

servicing.

- Failure to do so may result in a risk of electric shock.

ࣃ Do not allow consumers to connect several appliances to a single power outlet at the

same time.

- There is a risk of re due to overheating.

ࣃ When removing the power cord, make sure to hold the power plug when pulling the plug

from the outlet.

- Failure to do so may damage the plug and result in re or electric shock.

ࣃ When the dishwasher is not being used, make sure to disconnect the circuit breaker or

power cable from the power outlet.

- Failure to do so may result in electric shock or re due to lightning.

ࣃ Do not place or use gasoline, thinners, alcohol, or other ammable or explosive substances near the dishwasher.

- There is a risk of explosion and re caused from electric sparks.

Safety Instructions _ 1

While Servicing

ࣃ Check if the power cable is damaged, attened, cut or otherwise degraded.

- If faulty, replace it immediately. Failure to do so may result in electric shock or re.

ࣃ Completely remove any dust or foreign material from the housing, wiring and connection parts.

- This will prevent a risk of re due to arcing and short circuits in advance.

ࣃ When connecting wires, make sure to connect them using the correct connectors and check that they are

completely connected.

- If tape is used instead of the connectors, it may cause re due to arcing.

ࣃ Make sure to disconnect the PBA power terminals before starting the service.

- Failing to do so may result in a high voltage electric shock.

After Servicing

ࣃ Check for any water leakage.

- Perform a test using the standard(normal) cycle and check whether there is any water leakage through the oor

section or the pipes.

ࣃ Do not allow consumers to repair or service any part of the dishwasher themselves.

- This may result in personal injury and shorten the product life.

ࣃ If it seems that grounding is needed due to water or moisture, make sure to run grounding wires.

- Failure to do so may result in electric shock due to electric leakage.

2 _ Safety Instructions

Caution

Before Servicing

ࣃ Do not sprinkle water onto the dishwasher directly when cleaning it.

- This may result in electric shock or re, and may shorten the product life.

ࣃ Do not place any containers with water on the dishwasher.

- If the water is spilled, it may result in electric shock or re.
This will also shorten the product life.

ࣃ Do not install the dishwasher in a location exposed to snow or rain.

- This may result in electric shock or re, and shorten the product life.

ࣃ Do not press a control button using a sharp tool or object.

- This may result in electric shock or damage to the product.

During Servicing

ࣃ When connecting a wiring harness, make sure to seal it completely so no liquid can enter.

- Make sure that the connections are secured by slightly pulling on them.

ࣃ Check if there is any evidence that liquid has entered electric components or connections.

- If any liquid has entered into a part, replace it or completely remove any remaining moisture from it.

ࣃ If you need to place the dishwasher on its back for servicing purposes, place a support(s) on the oor and lay it

down carefully so the back is on the oor.

- Do not lay it down on its front or side. This may result in scratches to the surface or damage to the parts.

Safety Instructions _ 3

After Servicing

ࣃ Check the assembled status of the parts.

- They must be the same as before servicing.

ࣃ Check whether the product is level with the oor and secured to the cabinet and under

the counter.

- Vibrations can shorten the life of the product.

4 _ Safety Instructions

2. FEA TURES AND SPECIFICA TIONS

2-1. FEATURES

Features Description Remarks

New Waterwall cleaning system gets dishes sparkling everytime

Waterwall linear wash system

Target zone washing

Half load cycle: upper and lower

Third rack with ex tray

• High pressure, consistent wall of water cleans hard to reach places

• No need to pre-rinse

• Available on full or half cycle

Targeted wash for hard to clean pots and pans

• Control water pressure, temperature and time

• Select left target zone

Wash smaller loads without wasting water

• No need to wait until you have a full load

• Choose either upper or lower rack

• Saves on energy

Removable roll-up silverware tray for easy unloading

• Silverware lays at for better cleaning

• Perfect for oversized or hard to t items

• Easily roll up and remove for easy unloading

Adjustable racking system

Speed boost

Digital leakage sensor

Flexible design for more space

• Frees up more space on the top rack for tall and oversized items

Wash your dishes in less time

• Increased water pressure reduces wash time

• Perfect for everyday family dishes

Worry-free dishwashing

• Can sense a leak of only 1 1/2 ounces

• Shuts itself off before water can escape and cause oor damage

• Protects against water-related damage and provides peace of mind

Features and Specications _ 5

2-2. SPECIFICATIONS

Wash capacity 15 place settings
Type Dishwasher
Power Single-phased alternating current of 60Hz, 15A at 120V
Used water pressure 20 ~ 120 psi (140 ~ 830 kPa)
Wash type Waterwall Linear Wash & Rotating nozzle spray
Dry type Air diffusion condensing dry system
Power usage Main Pump : 96w (Waterwall operating), Heater : 1100w
Standard amount of used water 6.34 ~ 2.85 gallon (24 ~ 10.8 ℓ), Normal Cycle
Size (W×D×H) 23 ⅞" x 25" x 33 ⅞" inch (605 x 636 x 860 mm )

Accessory parts : User/Installation manual, Installation Kit, Kick Plate

6 _ Features and Specications

2-3. COMPARING SPECIFICATIONS WITH EXISTING MODELS

New model Model

Model

Photo

Panel Control

Control Type

Wine Rack

Handle Type

Basket Handle

Soil Detection

Sensors

Drying method

Basket Height

Adjustment

Leakage Sensor

Rail Type

Programs

Options

DW80M9550US/UGDW80M9960US/

UG

Silver/Black Silver/Black Silver/Black Silver

Touch Touch Touch Touch Touch Touch Touch

X X X O X X X

Pocket Pocket Pocket Pocket Pocket Bar

Blue + STS Blue + STS Blue + STS Blue + STS Gray Gray + STS Gray

O O O O O O O

O O O O O O O

“C” Rail “C” Rail “C” Rail Soft Rail “C” Rail “C” Rail “C” Rail

7

(Auto, Normal,

Heavy,

Delicate,

Express60”

Rinse only

Self Clean)

7

(Half load,

Zone Booster,
Speed Booster,
Hi-Temp Wash,

Sanitize, Delay

Start, Control

Lock)

7

(Auto, Normal,

Heavy,

Delicate,

Express60”

Rinse only

Self Clean)

8

(Half load,

Zone Booster,
Speed Booster,
Hi-Temp Wash,

Sanitize, Delay

Start, Control

Lock,Smart

Control)

DW80M9990UM

/US

Design Specications

Function Specications

AutoRelease system Air diffusion condensing

One-touch One-touch 2-stage

6

(Auto, Normal,

Heavy,

Delicate,

Express60, Self

Clean, Chef)

8

(Half load,

Zone Booster,
Speed Booster,
Hi-Temp Wash,
Sanitize, Delay

Start, Control

Lock,Smart

Control)

DW80J9945US

5

(Auto, Normal,

Heavy,

Delicate,

Express60”)

5

(Half Load

wash, Targeted

zone, Sanitize,

Dry+, Delay

start)

DW80J7550US/

UW/UG

Silver/Black/

White

5

(Auto, Normal,

Heavy, Delicate,

Express60”)

5

(Half Load wash,

Targeted zone,
Sanitize, Dry+,

Delay start)

DW80F800UWS

Silver

6

(Normal, Heavy,

Delicate, Pot &

Pans, Quick+,

Smart Auto)

6

(Delay Start,

Sanitize, Half

Load, Storm

Wash, Child

Lock, Start &

Drain)

DW80F600UTS

/UTB/UTW

Silver/Black/

Bar/Pocket/

Pocket

(Normal, Heavy,

Delicate, Smart

(Sanitize, Child

Lock, Delay

Start, Start &

White

4

Auto)

4

Drain)

Features and Specications _ 7

2-4. OPTIONS SPECIFICATIONS

Photo Item Code QTY Remarks

ASSY PACKING PARTS DD98-01019A 1

▫

FITTING (3/4”) - 1

90

WATER SUPPLY LINE

(Flexible STS supply line is

recommend)

Provided

with the

dishwasher

- 1

AIR GAP - 1

RUBBER CONNECTOR - 1

HOSE CLAMP - 1

STRAIN RELIEF - 1

Sold

separately

8 _ Features and Specications

3. DISASSEMBLY AND REASSEMBLY

3-1. TOOLS FOR REMOVAL AND REASSEMBLY

Tool image

No. Tool Type Remarks

➊

➊

➊

➊

➊

Adjustable Wrench
Open-end Wrench 1-7/16” Leg
Vice pliers
Others

(screwdriver, nipper, long nose pliers)

Nut Driver 10mm Heater bracket Nut

Common tools for servicing

Screwdriver - Philips, at, Torx T20, Small at

* Preparation for parts replacement

1. Take out the residual water inside the product.
(Drain the water by operating the drain pump)

2. Close the water supply valve.

3. Turn off the power & disconnect power cable.
You must turn off the circuit breaker connected to the product.

4. Pull out the unit from the sink and lay it on the oor.
Be careful of the drain hose when pulling out the unit.



Caution
When pulling out or laying the dishwasher down for service, it may be necessary to lower the height of the adjustable
legs to provide the clearance for the removal of the unit, prevent breaking the legs, or damaging the base of the unit.

Disassembly and Reassembly _ 9

3-2. PREPARATION FOR PARTS REPLACEMENT

1. Take out the residual water inside the product. (Drain the water by operating the drain pump)

2. Close the water supply valve.

3. Turn off the power. You must turn off the circuit breaker connected to the product.

4. Pull out the unit from the sink and lay it on the oor. Be careful of the drain hose when pulling out the unit.

Warning
Always turn off the electric power supply & water supply before servicing any electrical component, making ohmmeter
checks, or replacing any parts.

Caution
Before moving the unit, laying it down for service, or removing any parts for service be sure to drain as much of the water

from the unit as possible. Use a protective mat or towel to prevent damage to the oor or having any of the remaining
water spill on the oor.

All voltage checks should be made with a voltmeter having a full scale range of 250 volts or higher. After service is

completed, be sure all safety grounding circuits are complete, all electrical connections are secure, and all access
panels are in place.

Before servicing, make sure to remove all items from inside of the dishwasher, including the wash racks.

3-3. REMOVING THE UPPER RACK

Pull the upper rack towards the front and then remove it by lifting it up slightly and pulling it towards the front.
See the illustrations below.

Caution
While the upper rack is removable, it must be installed for the dishwasher to operate properly.
If you attempt to operate the dishwasher without the rack, noise will occur and the dishwasher will perform poorly.

Step 1. Step 2. Step 3.

10 _ Disassembly and Reassembly

Part Figure Description

Preparation:

• Make sure to disconnect the power.

1. Find Main PBA case below the door.

2. Remove two screws on the left and right.

3. Remove the cover from the Main PBA.

Main PBA

4. Remove the all wire connectors from Main
PBA.

- DW80M9960US/UG : 8 wire connectors

- DW80M9550US/UG : 7 wire connectors

5. Remove the two screws from the top left

and right of the main PBA.

6. Carefully put a screw driver in the gap.
Carefully angle the screwdriver to depress
the locking tabs that secure the Main PBA
to the housing and gently pull the Main PBA
from the housing.

When removing the Main PBA, lift the Main

PBA board up carefully.

Disassembly and Reassembly _ 11

Part Figure Description

Preparation:

• Make sure to disconnect the power.

• Remove the lower basket in the dishwasher.

• Cover the Assy sump with a towel to prevent
losing screws.

1. Open the door completely to prevent losing
screws.

Before removing the parts, place a cushioned

mat on the oor to prevent the parts from being

scratched.

2. Remove the 12 screws (short one 8 pieces, long

one 4 pieces) which holding the door outer and
control panel in place.

After removing screws, make sure to hold the door

outer using your hand. This will prevent the door
from closing suddenly and harming you.

Door outer

Caution

Do not place the removed screws on the door
inner. They may fall into the sump assy.

3. Pull out the door outer carefully.

4. Separate wire connectors indicated by the red
arrows in the picture to the left and separate the
Wire from the Hook shown with red arrow.

- DW80M9960US/UG : 10 wire connectors

- DW80M9550US/UG : 8 wire connectors

5. Lay a mat on the oor to protect the Door and put

down the Assy door outer.

12 _ Disassembly and Reassembly

Part Figure Description

Preparation:

• Disassemble the Assy door outer.

1. Remove the two (2) screws from Assy Door outer.

2. Remove Sub PCB from panel control.

There is two hooks.

Panel control

3. Remove the Buzzer.

4. WIFI Module is xed to the panel control with

hook. Bend this hook than remove WIFI module.

Disassembly and Reassembly _ 13

Part Figure Description

Preparation:

• Disassemble the door outer.

- Refer to the “door outer” disassembly section to
separate the door outer.

1. Remove the two(2) connectors from the dispenser.

Caution

Be careful not to break them during disassembly.

Dispenser - slide

2. The dispenser-slide is xed to the door inner with
several tabs. Use a at tip screwdriver to gently pry

the tabs.

Assy Module

(Pocket Light

Module)

3. Push it to the inside carefully.

Be careful as the tub front is sharp.

Preparation:

• Disassemble the Panel control.

- Refer to the “Panel control” disassembly section to

separate Panel control until step 1.

1. Remove Two (2) Screws which pointed by red

arrows from Assy window panel.

2. Disassemble Holder display PCB from Assy panel

control.

14 _ Disassembly and Reassembly

Part Figure Description

1. Remove the two(2) screws holding the trim-

up to the assy-tub.

2. Check and separate 2 hook of trim.

Lever door

Assy cover door

switch

Assy condenser

3 2 1 2 3

Assy condenser

Assy auto

door switch

Lever door

3. Separate two wire connector.

4. If you want to separate the Lever door from
Assy tub, remove the screw labelled ① in the
picture to the left.

If you want to separate Assy auto door switch

from Assy tub, remove the screws labelled ②
on the picture to the left.

If you want to separate Assy condenser from

Assy tub, remove the screws labelled ③ in the
picture on the left.

5. Refer to the picture on the left to remove the

parts.

Disassembly and Reassembly _ 15

Part Figure Description

1. Remove Holder-tub light by rotating.
(counterclockwise)

Assy Lamp LED

(for DW80M9990

Series)

2. Pull the Assy lamp LED to inside of tub.

16 _ Disassembly and Reassembly

Part Figure Description

1. Drain hose

2. Drain pump out

3. Assy guide water-sub

Preparation:

Assy Case Brake

• Make sure to disconnect the power, water supply,
and drain hose connections.

• Remove the upper, lower baskets and 3rd rack in
the dishwasher.

• Pull out the dishwasher carefully.

1. Remove the two(2) screws of the Housing Left.

2. Remove the housing left and make sure not to

damage the hooks on the bottom, outlined in the

blue box in the picture on the left.

Caution

Make sure to wear gloves when removing it.

Be careful as the steel plate is sharp and may cut you.

3. Remove cover brake by rotating.(counterclockwise)
Use a jig. If you do not have a jig, you can use
needle nose pliers.
(Be careful when removing the cover as it is easily
damaged.)

Disassembly and Reassembly _ 17