Daewoo DWM-7510 User manual

Service Manual
Washing Machine
Model: DWM-7510
DAEWOO ELECTRONICS CO., LTD.
✔ Caution
: In this Manual, some parts can be changed for improving, their
performance without notice in the parts list. So, if you need the
latest parts information,please refer to PPL(Parts Price List) in
Service Information Center (http://svc.dwe.co.kr).

TABLE OF CONTENTS
1. SPECIFICATIONS ................................................................................................................................. 1
2. EXTERNAL VIEW ................................................................................................................................. 2
3. PRINCIPLES OF OPERATION AND EXPLANATION OF FUNCTIONS ............................................. 3
4. DIRECTION FOR DISASSEMBLY AND ASSEMBLY ......................................................................... 7
5. TROUBLESHOOTING GUIDE ............................................................................................................. 10
6. EXPLODED VIEW AND PARTS LIST .................................................................................................. 15
7. WIRING DIAGRAM................................................................................................................................ 23

2
1. SPECIFICATIONS
NOTE : Explanation table for suffix of names.
NO ITEM SPECIFICATIONS
1POWER
SOURCE VOLTAGE
AC 110V AC 1 20V AC 220V AC 127/220V AC 110/220V AC 220V AC 240V
FREQUENCY 60Hz 50Hz
2POWER
CONSUMPTION
PUMP
640W 610W
NON PUMP
580W 550W
3 DIMENSION NET : 874 X 532 X 989, PACKED UP :898X 558 X 1015 (WXDXH)
4 MACHINE
WEIGHT PUMP NET : 40kg, PACKED UP : 44kg
NON PUMP NET : 38kg, PACKED UP : 42kg
5 WASHING COURSE STRONG, NORMAL
6WATERLEVEL HIGH : 72

,MEDIUM :61

, LOW : 52

7 REVOLUTION
PER MINUTE WASH 100 rpm 100 rpm
SPIN 1700 rpm 1400 rpm
8 TIMER WASH MAX. 15 min., Manual operation
SPIN MAX. 5 min., Manual operation
9 WASHER TYPE PULSATOR TYPE
10 SPIN TYPE CENTRIFUGALLY SEPARATED TYPE
11 MAXIMUM MASS
OF TEXTILE WASH 7.5kg
SPIN 7.0kg
12 WATER SUPPLY MANUAL
13 SPIN RINSE O
14 OUTLET OF DRAIN HOSE REAR
15
LINT FILTER
O
POWER SOURCE SUFFIX EXPLANATION
NON PUMP PUMP
AC 100V 50/60Hz J -
ModelName Pump
DWM - XXXX N P
Power Source
AC 110V 60Hz T TP
AC 120V 60Hz A AP
AC 220V 50Hz N NP
AC 220V 60Hz L LP
AC 240V 50Hz M MP
AC 110/220V 50Hz D DP
AC 127/220V 60Hz S -

3
2. EXTERNAL VIEW
2-1. STRUCTURE OF THE WASH MACHINE
2-2. CONTROL PANEL(PANEL B ASS'Y)
WASH TIMER
Use to select the desired time for washing or rinsing.
WASH ACTION
Use to select wash action. (“STRONG”, “NORMAL”)
VALVE SELECTOR
Select“WASH.RINSE” for washing and rinsing, and “DRAIN” to drain the water.
(In case PUMP MODEL turn on the drain pump.)
“OFF” to turn off the drain pump. (Only PUMP MODEL)
LEVER WATER SUPPLY SELECTOR
Left : water supply in the WASH TUB
Right: : water supply in the BASKET SPIN.
INLET WATER
Connect inlet hose to supply waterin the WASH TUB or BASKET SPIN.
SPIN TIMER
Use to select the desired time for spinning.
DOOR WASH PULSATOR

CABINET
PLATE T
BASKET SPIN
DRAIN HOSE
DOOR SPIN
COVER SAFETY
GUIDE FILTER
FILTER AS
DRAIN STRAINER
PANEL B
WASH TIMER VALVE SELECTOR INLET WATER
WASH ACTION SPIN TIMER
LEVER WATER
SUPPLY SELECTOR

4
3. PRINCIPLES OF OPERATION AND EXPLANATION OF FUNCTIONS
WASH TIMER
FUNCTION
The main switch remains ON during the washing time set by turning the timer knob.
Atthe same time, the internal switch T1 and T2 which provide powerto WASH MOTOR alternately atassigned Intervals.
Select switch knob sets the wash type by means of controlling the interval of internal switch contact.
STRUCTURE AND PRINCIPLE OF ACTIVATION
CIRCUIT DIAGRAM

5
SPIN TIMER
FUNCTION
The spin timeris the switch providing power to the SPIN MOTOR(DRAIN PUMP MOTOR)during the setspin
dry time,and is a spring-type time switch comes on upon turning and those contactpoints comes off afterthe
set time.
STRUCTURE AND PRINCIPLE OF ACTIVATION
1)The main shaft turns due to the unwinding force when the spin timer is turned,the spring wound with that
force being delivered through each gear and the spring slowly unwinding at a speed finally
controlled by the angle assembly.
2) The contact point turns ON and the assembly angle is set in motion, which is in the CAM groove in the
OFF state, comes off the groove when the main shaft is turned to wind the spring. The contact point
turns OFF, return to CAM groove when the spring unwind completely.
SAFETY DEVICE FOR BASKET SPIN
The BASKET SPIN is an apparatus which eliminates the waterfrom the laundry through centrifugalseparation
generated by rapid revolution(approximately 1,600rpm for 60Hz). Accordingly, there are a DOOR SWITCH
to cutoff the power going into the DOOR SPIN is opened and a brake system to stop the rotating BASKET SPIN.
DOOR SWITCH
When the DOOR SPIN is opened during spinning,
the DOOR SWITCH LEVER which sites atop the DOOR
SPIN falls off the contact, and cuts off the power going
into the SPIN MOTOR.

6
BRAKE SYSTEM
When the DOOR SPIN is opened, LINK WIRE
which connect to DOOR SPIN loosens. And then
the BRAKE BAND touches the DRUM COUPLING
assembly and stops the SPIN DRYER as it is pulled
by the SPRING in the BRAKE FIX PLATE assembly.
BRAKE BAND GAP CONTROL METHOD
The BAND BRAKE works best when the gap between
it and the DRUM COUPLING is about 2mm when the
DOOR SPIN is closed.The SPIN DRYER stops slowly if
the gap between the two is too narrow, the SPIN DRYER
revolution is affected and the PLATE CONTROL WIRE may
be adjusted to maintain the BRAKE BAND gap adequately.
WASH DECELERATOR ASSEMBLY
The initialdeceleration following the activation of the WASH MOTOR takes place through the PULLEY
MOTOR and PULLEY PULSATOR, and the secondary deceleration is done by the gear in the GEAR
HOUSING which also increases their revolution strength. This revolution speed and strength is delivered to
the PULSATOR,which is then able to cause water current thatis strong yet soft so that wash loads are not
damaged.
MOTOR WASH
About 1,700rpm(60Hz)
1,400rpm (50Hz)
PLATE
CONTROL WIRE
BASKET SPIN
WASH MOTOR
PULLEY PULSATOR
About 330rpm (60Hz)
330rpm (50Hz)
PULSATOR
About 100rpm (60Hz)
100rpm (50Hz)

7
GEAR HOUSING ASS'Y
The GEAR HOUSING ASSEMBLY is a transmission device which turns the PULSATOR at 3.3 : 1 lowered
speed through the gear unit assembly which receives power at the GEAR SHAFT UNIT.
1) The two sides ofthe GEAR SHAFT UNIT
are supported by the OILLESS BEARING
in the GEAR HOUSING ASSEMBLY.
2) The GEAR UNIT ASSEMBLY is connected
to the GEAR SHAFT 1 and GEAR SHAFT
UNIT by the GEAR and GEAR UNIT respectively.
3) The two sides of GEAR SHAFT 1 are
supported by the OIL SEAL and OILLESS
BEARING in the GEAR HOUSING ASSEMBLY.
SPIN BELLOWS ASS'Y
The wrinkled rubber device on the bottom of the
BASKET SPIN is called SPIN BELLOWS ASSEMBLY.
It has a waterseal and a oilless metal inside
to prevent leakage and so thatthe BASKET SPIN
may work smoothly.
FILTER
Much lint may be obtained depending upon the kind of
clothes to be washed and same of the lint may also be
suck to the clothes.
To minimize this possibility, a lint filter is provided
on the upper part of the FILTER OVERFLOW to filter the
wash water.
Use of the lint filter during every wash is
recommend.
CLEANING THE LINT FILTER
1) Remove the FILTER AS from the FILTER OVERFLOW by pressing it downwards.
2) Turn the FILTER AS inside out, and wash the lint off with water.
3) Return the FILTER AS it was, and fix the FILTER AS to the FILTER OVERFLOW.
STRUCTURE

8
4. DIRECTION FOR DISASSEMBLYAND ASSEMBLY
ASSY PANEL BACK
1. Remove 5 screws on the PANEL B. 2.Remove KNOB and 2 screws on the PANEL B.
(Spin Timer)
3. Remove CONTROL LEVER and WASH
TIMER.
BASKET SPIN
4. Remove 5 screws on the COVER BACK. 5. Remove LINK BRAKE and ASSEMBLY
BRAKE WIRE.

9
6. Remove 1 bolt and nuton the upper side ofthe 7. Remove 2 screws on the PLATE T.
DRUM COUPLING AS.
8. Liftup the BASKET SPIN.
ASSY BASE UNDER
9. Remove 1 screw on the CABINET.
10. Separate HARNESS AS connectors. 11. Remove a V-BELT from PULLEY MOTOR.

10
12.Turn overthe washing machine. 13.Remove 7 screws on the BASE UNDER
ASSY.
14.Remove 3 screws on the BRACKET SPIN, 15.Remove 3 bolts on the BASE UNDER,
and remove the SPIN MOTOR. and remove the WASH MOTOR.
16. Remove 3 screws on the COVER PUMP.
(In case of PUMP MODEL)

11
5. TROUBLESHOOTING GUIDE
Note :Pullout the power plug to repairand make sure thatthe Washing Machine has been properly grounded.
Problem Check Point Cause Solution
Pulsator does
not rotate.
Is the Power properly connected?
Is the Motor hot?
(In the case there is Thermal Protector)
Is the Wiring good?
(Refer to the Wiring Diagram)
Is the contact of Wash Timer good?
Is the Condenser properly
connected?
Motor does not start due
to opening the Condenser
circuit.
Reconnect the Power Cord.
Reconnect the Condenser.
Wash restart when
Motor cools.
Power has been cut off
by the Thermal Protector.
Improper wiring.
Defective Wash Timer.
Defective Wash Motor.
Defect of mechanical
assembly.
Reconnect the wiring.
Replace Wash Timer.
Replace Wash Motor.
Tighten the screws fixed
on the Pulley.
Replace V-Belt.
Remove impurities after
disassembling pulsator.
Replace Gear Housing As.
Replace pulsator.
Reload with proper wash
load.
Is there a whirring sound from the
Wash Motor when turned on?
NO
NO
NO
NO NO
NO
YES
YES
YES
YES
YES
Pulsator does not
rotate smoothly.
Is the wash load appropriate?
Are the Pulsator and Motor Pulley
securely assembled?
Does the V-Belt slip?
Are there imputities between the
Pulsator.
Does the Gear Housing As Shaftrotate
propely when the pulsatorhas been
disassembled?
Worn out the serration
within the pulsator.
Defective Gear Housing As.
Worn out V-Belt.
Revolution obstructed by
impurities.
The wash load is more
than 7.5kg.
NO
YES
Is the fuse blown? Change the fuse.
YES
YES YES
YES
YES
NO
NO
NO
NO
NO
Concerning Wash

12
Problem Check Point Cause Solution
Problem Check Point Cause Solution
Pulsatoronly
rotates in one
direction.
There is excessive
noise during
washing.
The Basket Spin
does not rotate.
Is the wiring of Wash Condenser
properly connected?
Are there strange noise from Tub when
the Pulsator rotate? Impurtities between
Pulsator and Tub.
Pulsator improperly
assembled.
The contact of Door
Switch is open.
Motor does not start due
to opening the Condenser
circuit.
Tighten the Pulsator
fixing screw.
Keep the Door Spin
closed during spin.
Reconnect the Condenser.
Is the wiring of Wash Timer properly
connected?
NO
NO
NO
NO
NO
NO
YES
YES
YES
YES
YES
YES
Is the Door Spin open?
Is there a whirring sound from the
Spin Motor when turned ON?
Is the Condenser properly connected?
Improper wiring.
Improper wiring.
Reconnect.
Defective Wash timer.
Reconnect the Wash
Timer.
Replace Wash Timer.
Remove impurities after
disassemble Pulsator.
Something is in contact
with the Pulsator Pulley or
Motor Pulley or other
rotating parts.
Adjust the parts so that
there are no impurities in
contact with rotating parts.
Is the Fuse blown?
Change the Fuse.
NO
YES
NO
YES
Concerning Spin

13
Problem Check Point Cause Solution
The Basket Spin
does not rotate.
Is the Motor hot?
(In the case there is Thermal Protector)
Is the Wiring good?
(Refer to the Wiring Diagram)
Is the Door Switch Lever properly
placed on the Door Spin?
Assemble after loosening
Link Brake.
Replace Brake Spring.
Spin restart when
Motor cools.
Power has been cut off
by the Thermal Protector.
Improper wiring.
Defective connection.
Improper wiring.
Reconnect the Wiring.
Replace Door Switch or
Reconnect the Door Switch.
Reconnect the terminal.
Replace the Spin Motor.
Replace the Spin Timer.
Reload the clothes so they
are well balanced.
Tighten the Bolt in Drum
Coupling Assembly.
Reload the colthes and
press down the Safety
Cover into Basket Spin .
NO NO
NO
NO
NO
NO
NO
YES
YES
YES
YES
YES YES
YES
YES
YES
YES
There are strange
noise and severe
vibration during
spinning.
Is the Door Switch terminal properly
connected?
Is the contact of Spin Timer good?
Is the wash load well balanced?
Are clothes or the Safety Cover
stick out from Basket Spin ?
Is the assembly between the Drum
Coupling Assembly and Spin Motor
or Basket Spin loose?
Is The Basket Spin itself well Balanced?
Basket Spin does not
balanced due to wash load.
Improper assembly.
Basket Spin unbalance. Replace Basket Spin.
Defective Spin Motor.
Defective Spin Timer.
Basket Spin does not
balanced due to wash load.
Brake Wire is too long.
Brake Spring is broken.
The Brake Band is touching
the Drum Coupling Assembly.
NO
NO
YES
YES
NO

14
Problem Check Point Cause Solution
Problem Check Point Cause Solution
There are strange
noise and severe
vibration during
spinning.
There is leakage
during spinning.
Basket Spin does
not stop with the
Door Spin open.
Drainage is not
satisfactory.
The Brake Band touches the Drum
Couping when the Door Spin open.
Is the electric connection ofthe Door
Switch good?
Brake wire is too short.
Brake Bnad is worn out.
Defecive Door Switch. Replace Door Switch.
The Drain Hose is too high.
Impurities are obstructing
drainage.
Impurities are obstructing
drainage.
Impurities are blocking the
Drain Hose.
Replace Brake Band or
Brake Fix Assembly.
Hang the Drain Hose lower.
Disassemble Pulsator and
take out impurities in Drain
strainer.
Remove impurities or
replace Valve Housing or
Inlet Joint.
Remove impurities.
Isthe Bellows Assembly properly
assembled? NO
NO
NO
NO
NO
YES
YES
YES
YES
Is the height ofthe drainage area where
the Drain Hose hangs over1m?
Are there impurities in the Drain Strainer?
Are there impurities in the
Valve Housing or Inlet Joint?
The Watersealor the Oilless metalin the
Bellows Assembly worn out.
Waterproofing not working
due to defective assembly.
The Watersealor the Oilless
Metal in the Bellows Assembly
is worn out.
Replace Bellows Assembly.
Re-assemble Bellows
Assembly.
Replace Bellows Assembly.
Assemble after losening
Link Brake.
The contact of the Door
Switch does not open due
to deformity of the Lever
of Door Switch.
Replace DoorSwitch or
Reconnect the Door Switch.
YES
NO
YES
YES
Concerning Drainage (Pump)

15
Problem Check Point Cause Solution
Draining does not
function during
drain selecting.
Draining does not
function during
Spinning.
Is the Drain Selector in the DRAIN
position?
Is the pump Motor wiring properly
connected?
The position is fault.
Defective wiring.
Defective wiring.
Defective Spin Timer.
Defective Pump Motor.
Reconnect wiring.
Reconnect wiring.
Replace Spin Timer.
Replace Pump Motor.
NO
NO
NO
NO
YES
YES
YES
Are the wiring of the Spin Timer and
the Pump Motor good?
Is the Spin Timer contact good?
Turn the Drain Selector
to DRAIN.
Defective Pump Motor. ReplacePump Motor.
YES
Problem Check Point Cause Solution
Drainage is not
satisfactory.
Are there impurties in the Drain Strainer? Impurities are obstrusting
drainage. Disassemble Pulsator and
take out impurities in Drain
Strainer.
Impurities are obstrusting
drainage. Remove impurities or replace
Valve Housing or Inlet Joint.
Are there impurities in the Valve Housing
or Inlet Joint?
Impurities are blocking the
Drain Hose. Remove impurities.
WaterKeeps
Draining during
wash.
Is the Drain Selector DRAIN position
on the panel. The position is fault. Turn the Drain Selector to
WASH/RINSE position.
There are impurities
between Valve Housing
and Valve Bellows.
Remove impurities or
replace Valve Housing.
YES
NO
NO
NO
YES
YES
Concerning Drainage (NON PUMP)

16
6. EXPLODED VIEW AND PARTS LIST
ASSY PANEL BACK

17
ASSY PANEL BACK
ASSY ACCESSORY
NO. PART NAME PART CODE SPECIFICATION REMARK
P01 KNOB 3613402400 HIPS COLOR OPTION
P02 PANEL B 3614220900 HIPS COLOR/LETTER OPTION
P03 LEVER W.S SELECT 3613701000 PP COLOR OPTION
P04 TIMER SPIN 3619910100 S-7510A
P05 TIMER WASH 3619910200 S-K75A
P06 SWITCH DRAIN 3619043700 VP531A-2H, 250VAC/15A
P07 LEVER CONTROL 3613702200 POM
P08 BRACKET CONTROL 3610604200 HIPS
P09 LINK VALVE 3617801500 PP BAND W6
P10 HARNESS DRAIN 3612757500 7510P SW DRAIN PUMP MODEL
NO. PART NAME PART CODE SPECIFICATION REMARK
A01 COVER SAFETY 3611416300 PELD
A02 HOSE CLAMP 4508A06120 SW 2.6D ZN8-C (R15.5) NON PUMP MODEL
A03 DRAIN HOSE 3613223000 L=1100mm NON PUMP MODEL
A04 CLAMP HOSE O 3611202400 HSW-3, 4.0 kg PUMP MODEL
A05 HOSE DRAIN O 3613222600 4010P, OSUNGSA PUMP MODEL
A06 GUIDE DRAIN HOSE 3612502300 PP PUMP MODEL
✔ Caution: In this Service Manual, some parts can be changed for improving, their performance without notice in the parts list. So, if you need the
latest parts information, please refer to PPL(Parts Price List) in Service information Center(http://svc.dwe.co.kr)

18
ASSY TUB
PUMP MODEL

19
ASSY TUB
NO PART NAME PART CODE SPECIFICATION REMARK
T01 TUB 3618815600 PP
T02 DOOR WASH 3611795000 HIPS COLOR OPTION
T03 PULSATOR AS 3619704700 7.5kg COLOR OPTION
T04 SPECIAL SCREW 3616002900 SUS304
T05 GUIDE DOOR 3612507100 PP
T06 DRAIN STRAINER 3619606600 PP
T07 BASE WATER SUPPLY 3610387100 PP COLOR OPTION
T08 FILTER AS 3611904000 PP+ POLYESTER
T09 FILTER OVERFLOW 3611903700 PP
T10 COVER BASKET 3611416000 PP
T11 BOLT SPIN BASKET 4506B19031
T12 PLATE UPPER 3614516900 SPG T1.2
T13 BASKET SPIN 3619102400 SPCE
T14 PLATE UNDER 3614517900 SPG T2..0
T15 FIXTURE SHAFT AS 3612005300 7.0kg
D
14
T16 BELLOWS AS 3616401600 7.5kg
T17 FIXTURE BELLOWS 3612005100 PP
T18 LINK BRAKE 3617801600 PP BAND W6
T19 SPRING COVER 3615109100 SWC
T20 WINDOW SPIN 3615501900 ABS COLOR OPTION
T21 DOOR SPIN 3611794900 HIPS COLOR OPTION
T22 SWITCH COVER 3619001200 15A 220VAC RW-622,250
T23 PLATE T 3614517000 PP COLOR OPTION
T24 COVER INNER 3611416100 PP
T25 PACKING 3614001900 NBR
T26 GEAR HOUSING AS 3617306200 DWM-7510S R=3.3:1
T27 PULLEY PULSATOR 3618405500 FRPP
T28 SPECIAL BOLT 3616008400 M6 SIDE FIXING
T29 PACKING 4509A05032 NR PUMP MODEL
T30 VALVE CAP 4505F06013 PP
T31 SPRING VALVE 4505C06020 SUS304 WR D1.0
T32 ROD VALVE 3618504000 PP
T33 BELLOWS VALVE 4505C06040 NR
T34 INLET JOINT 3617503800 PP
T35 CASE VALVE 3611118200 PP
T36 CAP 3610909800 PP
T37 HOSE OVERFLOW 4506H60610 PE-HD
T38
ELBOW DRAIN 3617101900 PP NON PUMP MODEL
HOSE A 3613217420 PE-LD/EVA, O-SUNG PUMP MODEL
✔ Caution: In this Service Manual, some parts can be changed for improving, their performance without notice in the parts list. So, if you need the
latest parts information, please refer to PPL(Parts Price List) in Service information Center(http://svc.dwe.co.kr)