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.