Daewoo KOG-574R0S User manual

Service Manual
Microwave Oven
SN:G574R0S001 SEP. 2000
DAEWOO ELECTRONICS CO.,LTD
http ://svc.dwe.co.kr
MODEL : KOG-574R0S
KOG-575R0S

2
SAFETY AND PRECAUTIONS
1. FOR SAFE OPERATION
Damage that allows the microwave energy (that cooks or heats the food) to escape will result in poor cooking and
may cause serious bodily injury to the operator.
IF ANY OF THE FOLLOWING CONDITIONS EXIST, OPERATOR MUST NOT USE THE APPLIANCE.
(Only a trained service personnel should make repairs.)
(1) A broken door hinge.
(2) A broken door viewing screen.
(3) A broken front panel, oven cavity.
(4) A loosened door lock.
(5)A broken door lock.
The door gasked plate and oven surface should be kept clean.
No greas,soil or spatter should be allowed to build up on these surfaces or inside the oven.
DO NOT ATTEMPT TO OPERATE THIS APPLIANCE WITH THE DOOR OPEN.
The micrwave oven has concealead switch to make sure the power is turned off when the door is opened.
Do not attempt to defeat them.
DO NOT ATTEMPT TO SERVICE THIS APPLIANCE UNTIL YOU HAVE READ THIS SERVICE MANUAL.
2. FOR SAFE SERVICE PROCEDURES
1. If the oven is operative prior to servicing, a microwave emission check should be performed prior to servicing t
he oven.
2. If any certified oven unit is found to servicing, a microwave emission check should be performed prior to servicing
the oven.
(a) inform the manufacturer, importer or assembler,
(b) repair the unit at no cost to the owner,
(c) attempt to ascertain the cause of the excessive leakage,
(d) tell the owner of the unit not to use the unit until the oven has been brought into compliance.
3. If the oven operates with the door open, the service person should tell the user not to operate the oven and contact
the manafacterer and CDRH innediately.
IMPORTANT
The wire in this mains lead colourred in accordance with the following code.
Green-and-yellow : Earth
Blue : Neartral
Brown. : live
As the colords of the wires in the manins lead of this appliance may not correspond with the coloured makings
identifying the terminals in your plug, proced as follows.
The wire which is coloured green-and-yellow must be connected to the terminal in the plug which is marked with
the letter ‘E’, earth symbol or coloured green-and-yellow.
The wire which is coloured blue must be connected to the terminals which is marked with the letter ‘N’or coloured
black.
he wire which is coloured brown must be with the letter ‘L’or coloured red.

3
SPECIFICATIONS
* SPECIFICATIONS ARE SUBJECT TO CHANGE WITHOUT NOTICE.
MODEL KOG-574ROS/575R0S/575R0S01/575R0S02/574R0S03
POWER SUPPLY 230V ~ 50Hz, SINGLE PHASE WITH EARTHING
POWER
CONSUMPTION MICROWAVE 1,200W
GRILL 1,050W
COMBINATION 2,200W
MICROWAVE ENERGY OUTPUT 800W
MICROWAVE FREQUENCY 2,450MHz
OUTSIDE DIMENSIONS(W X H X D) 465 x 279 x 360 mm (18.3 x 11.0 x 14.2in.)
CAVITY DIMENSIONS (W X H X D) 290 x 208 x 306 mm (11.4 x 8.2 x 12.0 in.)
NET WEIGHT Approx. 14kg (30.9 lbs.)
TIMER 59 min. 00 sec.
FUNCTION SELECTIONS MICROWAVE/GRILL/COMBINATION
POWER SELECTIONS 5 LEVELS
CAVITY VOLUME 0.7 Cu.Ft.

4
EXTERNAL VIEW
1. OUTER DIMENSION
2. FEATURE DIAGRAM
15
9
8 74
10
23
6
11
1. Door seal - Door seal maintains the microwave energy
within the oven cavity and prevents microwave leakage.
2. Cover Heater
3. Heating Element
4. Oven cavity
5. Safety interlock system
6. Metal Rack
7. Coupler - This fits over the shaft in the center of the
ovens cavity floor. This is to remain in the oven for all
cooking.
8. Roller guide - This must always be used for cooking
together with the glass cooking tray.
9. Glass cooking tray - Made of special heat resistant
glass. Food in a proper receptacle is placed on this tray
for cooking.
10. Door viewing screen - Allows viewing of food. The
screen is designed so that light can pass through, but
not the microwave.
11. Door hook - When the door is closed, it will
automatically shut off. If the door is opened while the
oven is operating, the magnetron will immediately stop
operating.

5
EXTERNAL VIEW
3. CONTROL PANEL
12. Display - Cooking time, power level, indicators and
present time are displayed.
13. Grill/Combi - Used to cook grill/combi.
14. Power/Def. - Used to set power level.
Used to defrost foods by weight or time.
15. Auto cook - Used to cook using a program or to reheat.
16. Start/Easy cook - Used to start the oven operation and
also increase the reheat time by 30 seconds.
17. Stop/Clear - Used to stop the oven operation or to
erase all entries.
18. Clock - Used to set clock.
19. Dial knob - Used to set the time and weight.
W
e
i
g
h
t / T
i
m
e
Power/Def
Grill/Combi
Clock
1. Dinner Plate
2. Soup
3. Beverage
4. Fresh Vegetable
Auto Cook
Stop/Clear Start/Easy Cook
12
14
13
18
15
19
17
16

6
INSTALLATION
1. Steady, flat location
This microwave oven should be set on a steady, flat surface.
This microwave oven is designed for counter top use only.
2. Leave space behind and side
All air vents should be kept a clearance. If all vents are covered during operation, the oven may overheat and, eventually,
cause oven failure.
3. Away from Radio and TV sets
Poor television reception and radio interference may result if the oven is located closed to a TV, Radio, antenna or feeder
and so on.
4. Away from heating appliances and water taps
Keep the oven away from hot air, steam or splash when choosing a place to position it, or the insulation might be adversely
affected and breakdowns occur.
5. Power supply
Check your local power source.
This microwave oven requires a current of approximately 11 amperes, 230Volts, 50Hz grounded outlet.
Power supply cord is about 1.4 meters long.
The voltage used must be the same as specified on this oven. Using a higher voltage may result in a fire or other accident
causing oven damage. Using low voltage will cause slow cooking, We are not responsible for damage resulting from use
of this oven with a voltage of amprer fuse other than those specified.
This appliance is supplied with cable of special type, which, if samaged, must be repaired with cable of same type.
Such a cable can be purchased from DWEWOO and must be installed by a Qualified Person.
6. Examine the oven after unpacking for any damage such as:
A misaligned door, broken door or a dent in cavity.
If any of the above are visible, DO NOT INSTALL, and notify dealer immediately.
7. Do not operate the oven if it is colder than room temperature
(This may occur during delivery in cold weather.) Allow oven to become room temperature before operating.
EARTHING INSTRUCTIONS
This appliance must be earthed. In the event of an electrical short circuit , earthing reduces the risk of the electric shock by
providing an escape wire for the electric current. This applicance is equipped with a cord having a reathing wire with a
earthing plug. The plug must be plugged into an outlet that is properly installed ant earthed.
WARNING
Improper use of the earthing plug can result in a risk of electric shock. Consult a qualified electrician or serviceman if the
earthing instructions are not completely understood, or if doubt exists as to whether the appliance is properly earthed, and
either: If it is necessary to use an extension cord, use only a 3-wire extension cord that has a 3-blade earthing plug, and a
3-slot receptacle that will accpt the plug on the appliance. The marked rating of the extension cord should be equal to or
greater than the electrical rating of the appliance, or Do not use an extension cord.

7
OPERATIONS AND FUNCTIONS
1. Connect the main lead to an electrical outlet.
2. After placing the food in a suitable container, open the oven door and put it on the glass tray. The glass tray must always be
in place during cooking.
3. Close the door securely.
4. When the oven door is opened, the light turns off.
5. The oven door can be opened at any time during operation by touching the door release button on the control panel.
The oven will automatically shut off. To restart the oven, close the door and then touch START.
6. Each time a pad is touched, a BEEP will sound to acknowledge the touch.
7. The oven automatically cook on full power unless set to a lower power level.
8. The display will show : 0 when the oven is plugged in.
9. Time colck returns to the present time when the cooking time ends.
10. When the STOP/CLEAR pad is touched during the oven operation, the oven stops cooking and all information retained.
To erase all information (except the present time), touch the STOP/CLEAR pad once more. If the oven door is opened
during the oven operation, all information is retained.
11. If the START pad is touched and the oven does not operate, check the area between the door and door is closed securely.
The oven will not start cooking under the door is completely colsed or the program has been reset.
12. When using the GRILL or COMBI mode ;
Do not open the door so often, or the temperature inside the oven decrease and the cooking may not be completed in setting
time.
Never touch the oven window and metal interior of the oven when taking food in and out, because the temperautre inside
the oven and door is very high.
When using these modes, be careful as the tray will be not to touch, use oven gloves or pot holders while handling tray.
Wattage output chart
The power level is set by pressing the POWER pad. The chart shows the display, the power level and the percentage of power.
Touch POWER button Power level (Display) Approximate Percentage of Power
Once P-HI 100%
Twice P-80 80%
3 times P-60 60%
4 times P-40 40%
5 times P-20 20%
Make the oven is properly installed and pluggen into the electrical outlet.

8
DISASSEMBLY AND ASSEMBLY
Cautions to be observed when trouble shooting.
Unlike many other appliances, the microwave oven is high-voltage, high-current equipment.
It is completely safety during normal operation.
However, carelessness in servicing the oven can result in an electric shock or possible danger from a short circuit.
You are asked to observe the following precautions carefully.
1. Always remove the power plug from the outlet before servicing.
2. Use an insulated scredriver and ware rubber gloves when servicing the high voltage side.
3. Discahrge the high voltage capacitor before touching any oven components or wiring.
(1) Check the grounding.
Do not operate on a 2-wire extension cord.
The microwave oven is designed to be used with grounded.
It is imperative, therefore, to make sure it is grounded properly
before beginning repair work.
(2) Warning about the electric charge in the high voltage capacitor.
For about 30 seconds after the operation stopped and electric
charge remains in the high voltage capacitor.
When replacing or checking parts, short between oven chassis and
the negative high terminal of the high voltage
capacitor, by using a properly insulated screwdriver to discharge.
4. When the 15A fuse is blown out due to the operation of the monitor switch;
replace primary interlock switch, secondary interlock switch and interlock
monitor switch.
5. After repair or replacement of parts, make sure that the screws are properly
tightened, and all electrical connections are tightened.
6. Do not operate without cabinet.
SHORT
CAUTION : Service personnel should remove their watches whenever working close to or replacing the magnetron.
CAUTION:Whenservicingth appliance,needa care oftouchingor replacing highpotential parts becauseofelectrical shock
or exposing microwave. These parts are as follows - HV Transformer, Magnetron, HV Capacitor, HV Diode,
HV Fuse.

9
DISASSEMBLY AND ASSEMBLY
1. To remove cabinet
1) Remove three screws on cabinet back.
2) Push the cabinet backward.
2. To remove door assembly
1) Remove two screws which secure the stopper hinge top.
2) Remove the door assembly from top plate of cavity.
3) Reverse the above for reassembly.
NOTE : After replacing the door assembly, perform a check of correct alignment with the hinge and cavity front plate.

10
DISASSEMBLY AND ASSEMBLY
3. To remove door parts.
REF NO. PART CODE PART NAME DESCRIPTION Q’TY REMARK
A01 3512203850 FRAME DOOR ABS XR-401, H-2938 1
A02 3517005620 BARRIER-SCREEN*O TEMP GLASS T3.2 MIRROR 1
A03 3515204100 STOPPER HINGE*T AS KOR-63150S 1
A04 3511706120 DOOR PAINTING AS KOR-634R0S 1
A05 3517002800 BARRIER-SCREEN*I PE 0.1T 1
A06 3512300200 GASKET DOOR PP 1
A07 3513100730 HOOK POM BLACK 1
A08 3515101310 SPRING HOOK HSW-3 1
A09 7001503310 SCREW MACHINE PAN 5X33 MFZN 2
A10 3512603210 HANDLE DOOR STEEL NI + CR 1
A11 3511601500 DECORATOR LOGO AL T1.5 1
A12 3511604610 DECORATOR DOOR*U STS T0.6 1
A13 3511604600 DECORATOR DOOR*T STS T0.6 1
A14 3516003940 SPECIAL DOUBLE TAPE SI-161 T0.15 27MM 1
A04 A05 A06
A01 A02 A03
A08
A07
A13
A14
A12
DOOR ASSEMBLY
KOG-57470S : 3511712140
A10A11 A09