Daewoo KOR-63D7 User manual

Service Manual
Microwave Oven
Model: KOR-63D7
DAEWOO ELEC RONICS CO., L D.
S/M No. : R63D79S002

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 gasket plate and oven cavity surface should be kept clean.
No grease, 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 microwave oven has concealed switches 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 the
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 manufacturer and CDRH immediately.
IMPORTANT
The wire in this mains lead coloured in accordance with the following code.
Green-and-yellow : Each
Blue : Neutral
Brown : Live
As the colours of the wires in the manins lead of this appliance may not correspond with the coloured markings
identifying the terminals in your plug, proceed 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 terminal which is marked with the letter ‘N’ or coloured
black.
The wire which is coloured brown must be connected to the terminal which is marked with the letter ‘L’ or
coloured red.
NOTE
This oven is designed for counter-top use only.

3
MODEL KOR-63D7
POWER SUPPLY 230V~50Hz, SINGLE PHASE WITH GROUNDING
POWER
MICROWAVE 1200W
CONSUMPTION GRILL
COMBINATION
MICROWAVE ENERGY OUTPUT 800W
MICROWAVE FREQUENCY 2450MHz
OUTSIDE DIMENSIONS 465 x 279 x 364 mm (18.3 x 11.0 x 14.4 in)
CAVITY DIMENSIONS 290 x 220 x 306 mm (11.4 x 8.7 x 12.0 in)
NET WEIGHT APPROX. 13kg (28.7 Ibs.)
TIMER 35 MIN. DUAL SPEED
FUNCTION SELECTIONS MICROWAVE
POWER SELECTIONS 7 LEVELS
CAVITY VOLUME 0.7 Cu. Ft.
* SPECIFICATIONS ARE SUBJECT TO CHANGE WITHOUT NOTICE.
MODEL KOR-63F79S KOR-63F70S
POWER SUPPLY 230V~50Hz, SINGLE PHASE WITH GROUNDING
POWER MICROWAVE 1000W 1,200W
CONSUMPTION GRILL
COMBINATION
MICROWAVE ENERGY OUTPUT 700W 800W
MICROWAVE FREQUENCY 2450MHz
OUTSIDE DIMENSIONS 465 x 279 x 364 mm (18.3 x 11.0 x 14.4 in)
CAVITY DIMENSIONS 290 x 220 x 306 mm (11.4 x 8.7 x 12.0 in)
NET WEIGHT APPROX. 13kg (28.7 Ibs.)
TIMER 35 MIN. DUAL SPEED
FUNCTION SELECTIONS MICROWAVE
POWER SELECTIONS 7 LEVELS
CAVITY VOLUME 0.7 Cu. Ft.
* SPECIFICATIONS ARE SUBJECT TO CHANGE WITHOUT NOTICE.
SPECIFICATIONS

4
EXTERNAL VIEW
1. OUTER DIMENSION
2. FEATURE DIAGRAM
1. SAFETY INTERLOCK SYSTEM
2. DOORVIEWING SCREEN
Allos viewing of food. The screen is designed so that
light can pass through, but not the microwave.
3. DOOR HOOK
When the door is closed, it will automatically lock shut.
If door is opened while oven is operating, magnetron
tube will immediately stop operating.
4. OVEN CAVITY
5. DOOR SEAL
Door seal maintains the microwave within the oven cav-
ity and prevents microwave leakage.
6. GLASS COOKING TRAY
Made of special heat resistant glass. Food in a proper
receptacle is placed on this tray for cooking.
7. ROLLER GUIDE
This must always be used for cooking together with the
glass cooking tray.
8. COUPLER
This fits over the shaft in the center of the ovens cavity
floor. This is to remain in the oven for all cooking.
9. KNOB V.P.C.
Used in setting cooking time for all functions.
10. KNOB TIMER
Used in setting cooking time for all functions.
11. DOOR RELEASE BUTTON-
By pushing this button the latch system cut off all cir-
cuits and stops the oven before the door is opened.

5
INSTALLATION
1. Steady, flat location.
This microwave oven should be set on a steady, flat surface.
2.Leave space behind and side.
All air vents should be kept a clearance. If all vents are covered during operation, the oven may be overheated
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 close 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 6 amperes, 230 Volts, 50 Hz.
• Power supply cord is about 0.8 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 ampere fuse other than those specified.
• This appliance is supplied with cable of special type, which, if damaged, must be repaired with cable of same
type.
Such a cable can be purchased from DAEWOO 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 the 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 appliance is equipped with a cord having a earth-
ing plug. The plug must be plugged into an outlet that is properly installed and earthed.
WARNING
Improper use of the earthing plug can result in a risk of electric shock. Consult a qualified electrician or service-
man 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 plut, and a 3-slot receptacle that will accept 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.

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. Choose cooking power level by setting V.P.C knob to the desired
position. Refer to cookbook for recommended power levels.
5. Determine cooking time. Consult cookbook for recipe timing.
Oven light turns on and cooling fan starts to operate. Microwave
cooking starts.
6. You may open the door while the oven is operating. As soon as
the door is opened, the safety mechanisms stop the generation of
microwave power and the operation of cooking timer.
If you wish to change the time during cooking, simply adjust the
timer to the desired time.
7. When the timer reaches zero, a bell will ring and the unit will turn
off. Oven light turns off. If additional cooking time is needed and
the door is closed, the oven will automatically start when the timer
is reset.
Variable power cooking
ON and OFF cycle time of mechanical V.P.C switch is 30 seconds.
When the V.P.C knob is set to the desired position and timer knob to the desired position, the V.P.C switch has a cycle
(ON/OFF time(sec.)) listed below.
* the above % can be changed within ±6%
6
OPERATIONS AND FUNCTIONS
NOTE
1. When setting timer for less than 2 minutes,
tum the timer past 2 minutes and then
return to the correct timer setting.
2. Various clicking noises may be heard
when turning V.P.C knob. This is normal
and does not affect the operation of your
microwave oven.
Make sure the oven is properly installed and plugged into the electrical outlet.
MAX
Variable power setting Approximate Percentage
Power level Symbol of Power
HIGH 100%
MED HIGH 88%
MEDIUM 73%
LOW STAGE 59%
DEFROST 44%
HEAT 26%
GENTLE HEATING 18%

7
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 safe 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 screwdriver and ware rubber gloves when servicing the high voltage side.
3. Discharge the high voltage capacitor before touching any oven components or wiring.
(1) Check the grounding.
Do not operate on a two-wire extension cord.
The microwave oven is designed to be used while earthed.
It is imperative, therefore, to make sure it is earthed
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 12A 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.
CAUTION : Service personnel should remove their watches whenever working close to or replacing the magnetron.
WARNING :When servicing the appliance, need a care of touching or replacing high potential parts because of
electrical shock or exposing microwave. These parts are as follows - HV Transformer, Magnetron,
HV Capacitor, HV Diode, HV fuse.

8
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.
3. To remove door parts.
REF NO. PART CODE PART NAME DESCRIPTION Q’TY REMARK
A01 3512203880 FRAME DOOR PP SI83C 1KOR-63D7
A02 3517007300 BARRIER-SCREEN *O PET T0.125 1
A03 3515204100 STOPPER HINGE *T AS KOR-63150S 1
A04 3511705500 DOOR WELD ASSY KOR-61150S 1
A05 3517002800 BARRIER SCREEN *I PE T0.1 1
A06 3512300200 GASKET DOOR PP 1
A07 3513100700 HOOK POM 1
A08 351501300 SPRING HOOK PW-1 1

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4. Method to reduce the gap between the door seal and the oven front surface.
(1) To reduce gap located on part ‘A’
Loosen a screws on stopper hinge top, and then push
the door to contact the door seal to oven front surface.
Tighten two screws.
(2) To reduce gap located on part ‘B’
Loosen two screws on stopper hinge under, and then
push the door to contact the door seal to oven front
surface.
Tighten two screws.
(1) Remove the gasket door from door weld as.
(2) Remove the door frame from door weld as.
(3) Remove the stopper hinge top from door weld as.
(4) Remove the spring and the hook.
(5) Remove the barrier screen outer from door frame.
(6) Reverse the above steps for reassembly.
NOTE : A small gap may be acceptable if the microwave leakage does not exceed 4mW/cm
2
.

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5. To remove control panel parts.
1) Remove the screw which secure the control panel, push up two snap fits and draw forward the control panel assembly.
2) Remove the door open lever from the control panel.
3) Remove four screws which secure the timer assembly.
4) Remove the timer assembly.
5) Pull out the timer knob from the timer.
6) Pull out the timer coupler from the timer.
7) Remove the screw which secure the V.P.C coupler.
8) Pull out the V.P.C. coupler, V.P.C knob and flat spring from the control panel.
9) Remove door open button and button spring from the control panel.
10) Reverse the above steps for reassembly.
REF NO. PART CODE PART NAME DESCRIPTION Q’TY REMARK
B01 3513405500 KNOB VPC ABS XR-401 H-2938 1
B02 3516725300 CONTROL-PANEL ABS SG-0760D SG-175 1 (KOR-63D7)
B03 3515101600 SPRING FLAT SUS 301 T0.5 1
B04 3517400510 COUPLER VPC KNOB POM 1
B05 7122401211 SCREW TAPPING T2S TRS 4*12 MFZN 1
B06 3517400400 COUPLER TIMER POM 1
B07 3518204300 TIMER KN35MKD 15U-P 1
B08 7122401211 SCREW TAPPING T2S TRS 4*12 MFZN 2
B09 3513405410 KNOB ABS XR-401 H-2938 1
B10 3513702710 LEVER DOOR OPEN PP 1
B11 441G430171 SPRING BUTTON SWP DIA. 0.7 1
B12 3516906940 BUTTON DOOR OPEN ABS SG-0760D SG-175 1 (KOR-63D7)