Samsung DW80M9* Series User manual

DISHWASHER CONTENTS
SERVICEManual
DISHWASHER
Model Name : DW80M9*** Series
Model Code : DW80M9960US/AA
DW80M9550US/AA
DW80M9960UG/AA
DW80M9550UG/AA
DW80M9960US/AC
DW80M9960UG/AC
DW80M9550US/AC
DW80M9990US/AA
DW80M9990UM/AA
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. ComparingSpecicationswithExistingModels.........................................7
2-4. OptionsSpecications............................................................8
3. Disassembly and Reassembly..........................................................9
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

Safety Instructions _ 1
1. SAFETY INSTRUCTIONS
1-1. SAFETY INSTRUCTIONS FOR SERVICE ENGINEERS
ሪMake sure to observe the following instructions to operate the product correctly and safely and prevent possible
accidents and hazards while servicing.
ሪTwo 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.
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.
ࣃDo 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.
ࣃWhen 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.
ࣃWhen 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.
ࣃDo 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.

2 _ Safety Instructions
While Servicing
ࣃCheck 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.
ࣃCompletely 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.
ࣃWhen 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.
ࣃMake 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
ࣃCheck 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.
ࣃDo not allow consumers to repair or service any part of the dishwasher themselves.
- This may result in personal injury and shorten the product life.
ࣃIf 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.

Safety Instructions _ 3
Caution
Before Servicing
ࣃDo not sprinkle water onto the dishwasher directly when cleaning it.
- This may result in electric shock or re, and may shorten the product life.
ࣃDo 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.
ࣃDo 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.
ࣃDo not press a control button using a sharp tool or object.
- This may result in electric shock or damage to the product.
During Servicing
ࣃWhen 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.
ࣃCheck 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.
ࣃIf 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.

4 _ Safety Instructions
After Servicing
ࣃCheck the assembled status of the parts.
- They must be the same as before servicing.
ࣃCheck 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.

Features and Specications _ 5
2. FEATURES AND SPECIFICATIONS
2-1. FEATURES
Features Description Remarks
Waterwall linear wash system
New Waterwall cleaning system gets dishes sparkling everytime
• High pressure, consistent wall of water cleans hard to reach places
• No need to pre-rinse
• Available on full or half cycle
Target zone washing
Targeted wash for hard to clean pots and pans
• Control water pressure, temperature and time
• Select left target zone
Half load cycle: upper and lower
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
Third rack with ex tray
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 Flexible design for more space
• Frees up more space on the top rack for tall and oversized items
Speed boost
Wash your dishes in less time
• Increased water pressure reduces wash time
• Perfect for everyday family dishes
Digital leakage sensor
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

6 _ Features and Specications
2-2. SPECIFICATIONS
Wash capacity 15 place settings
Type Dishwasher
Power Single-phased alternating current of 60Hz, 15Aat 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

Features and Specications _ 7
2-3. COMPARING SPECIFICATIONS WITH EXISTING MODELS
Model
New model Model
DW80M9550US/
UG DW80M9960US/ UG DW80M9990UM
/US DW80J9945US DW80J7550US/
UW/UG DW80F800UWS DW80F600UTS
/UTB/UTW
Photo
Design Specications
Panel Control Silver/Black Silver/Black Silver/Black Silver Silver/Black/
White Silver Silver/Black/ White
Control Type Touch Touch Touch Touch Touch Touch Touch
Wine Rack X X X O X X X
Handle Type Pocket Pocket Pocket Pocket Pocket Bar Bar/Pocket/
Pocket
Basket Handle Blue + STS Blue + STS Blue + STS Blue + STS Gray Gray + STS Gray
Function Specications
Soil Detection
Sensors
O O O O O O O
Drying method AutoRelease system Air diffusion condensing
Basket Height
Adjustment
One-touch One-touch 2-stage
Leakage Sensor O O O O O O O
Rail Type “C” Rail “C” Rail “C” Rail Soft Rail “C” Rail “C” Rail “C” Rail
Programs
7
(Auto, Normal,
Heavy,
Delicate,
Express60”
Rinse only
Self Clean)
7
(Auto, Normal,
Heavy,
Delicate,
Express60”
Rinse only
Self Clean)
6
(Auto, Normal,
Heavy,
Delicate,
Express60, Self
Clean, Chef)
5
(Auto, Normal,
Heavy,
Delicate,
Express60”)
5
(Auto, Normal,
Heavy, Delicate,
Express60”)
6
(Normal, Heavy,
Delicate, Pot &
Pans, Quick+,
Smart Auto)
4
(Normal, Heavy,
Delicate, Smart
Auto)
Options
7
(Half load,
Zone Booster,
Speed Booster,
Hi-Temp Wash,
Sanitize, Delay
Start, Control
Lock)
8
(Half load,
Zone Booster,
Speed Booster,
Hi-Temp Wash,
Sanitize, Delay
Start, Control
Lock,Smart
Control)
8
(Half load,
Zone Booster,
Speed Booster,
Hi-Temp Wash,
Sanitize, Delay
Start, Control
Lock,Smart
Control)
5
(Half Load
wash, Targeted
zone, Sanitize,
Dry+, Delay
start)
5
(Half Load wash,
Targeted zone,
Sanitize, Dry+,
Delay start)
6
(Delay Start,
Sanitize, Half
Load, Storm
Wash, Child
Lock, Start &
Drain)
4
(Sanitize, Child
Lock, Delay
Start, Start &
Drain)

8 _ Features and Specications
2-4. OPTIONS SPECIFICATIONS
Photo Item Code QTY Remarks
ASSY PACKING PARTS DD98-01019A 1 Provided with the
dishwasher
90▫FITTING (3/4”) - 1
Sold
separately
WATER SUPPLY LINE
(Flexible STS supply line is
recommend) - 1
AIR GAP - 1
RUBBER CONNECTOR -1
HOSE CLAMP -1
STRAIN RELIEF -1

Disassembly and Reassembly _ 9
3. DISASSEMBLY AND REASSEMBLY
3-1. TOOLS FOR REMOVAL AND REASSEMBLY
Tool image 
No. Tool Type Remarks
➊Adjustable Wrench
➊Open-end Wrench 1-7/16” Leg
➊Vice pliers
➊Others
(screwdriver, nipper, long nose pliers) Common tools for servicing Screwdriver - Philips, at, Torx T20, Small at
➊Nut Driver 10mm Heater bracket Nut
* 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.

10 _ Disassembly and Reassembly
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.

Disassembly and Reassembly _ 11
Part Figure Description
Main PBA
Preparation:
• Make sure to disconnect the power.
1. Find Main PBAcase below the door.
2. Remove two screws on the left and right.
3. Remove the cover from the 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.

12 _ Disassembly and Reassembly
Part Figure Description
Door outer
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.
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.

Disassembly and Reassembly _ 13
Part Figure Description
Panel control
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.
3. Remove the Buzzer.
4. WIFI Module is xed to the panel control with
hook. Bend this hook than remove WIFI module.

14 _ Disassembly and Reassembly
Part Figure Description
Dispenser - slide
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.
2. The dispenser-slide is xed to the door inner with
several tabs. Use a at tip screwdriver to gently pry
the tabs.
3. Push it to the inside carefully.
Be careful as the tub front is sharp.
Assy Module
(Pocket Light
Module)
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.

Disassembly and Reassembly _ 15
Part Figure Description
Lever door
Assy cover door
switch
Assy condenser
1. Remove the two(2) screws holding the trim-
up to the assy-tub.
2. Check and separate 2 hook of trim.
3. Separate two wire connector.
32123
4. If you want to separate the Lever door from
Assy tub, remove the screw labelled ①in 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 ③in the
picture on the left.
Assy condenser
Assy auto
door switch
Lever door
5. Refer to the picture on the left to remove the
parts.

16 _ Disassembly and Reassembly
Part Figure Description
Assy Lamp LED
(for DW80M9990
Series)
1. Remove Holder-tub light by rotating.
(counterclockwise)
2. Pull the Assy lamp LED to inside of tub.

Disassembly and Reassembly _ 17
Part Figure Description
Assy Case Brake
1. Drain hose
2. Drain pump out
3. Assy guide water-sub
Preparation:
• 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.)

18 _ Disassembly and Reassembly
Part Figure Description
Assy Case Brake
4. Separate connection parts in red circle from tub and
pull out the Case brake by lifting up the hook in red
square.
1. Drain hose
2. Drain pump out
3. Assy guide
water-sub
4. Loosen the three (3) clamps and release the three
(3) hoses from the Assy case brake.
Caution
Water remaining in the Assy case sensor and Assy
case break will come out. Lay a towel on the oor to
absorb any water that may come out.
When reassembling, the holder of the clamp must be
pointing toward the inside of the dishwasher.
Assy guide water-
sub
Clamp
Preparation:
• Disassemble the Assy Case Brake.
- Refer to the “Assy Case Brake” disassembly
section to separate Assy case brake until step 4.
1. Separate the Assy guide water-sub from base by
bending two xed hook.
2. Separate the Assy guide water-sub from connected
hose by disassembling the clamp.