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S/M No. : R63350S001
Service Manual
Microwave Oven
MODEL : KOR-63350S
KOR-86350S
DAEWOO ELECTRONICS CO., LTD
http : //svc.dwe.co.kr MAR. 2000
PRECAUTIONS TO BE OBSERVED BEFORE AND DURING SERVICING TO
AVOID POSSIBLE EXPOSURE TO EXCESSIVE MICROWAVE ENERGY
(a) Do not operate or allow the oven to be operated with the door open.
(b) Make the following safety checks on all ovens to be serviced before activating the magnetron or other microwave
source, and make repairs as necessary: (1) Interlock operation, (2) Proper door closing, (3) Seal and sealing
surfaces (arcing, wear, and other damage), (4) Damage to or loosening of hinges and latches, (5) Evidence of
dropping or abuse.
(c) Before turning on power to the microwave oven for any service test or inspection within the microwave
generating compartments, check the magnetron, wave guide or transmission line, and cavity for proper
alignment, integrity, and connections.
(d) Any defective or misadjusted components in the interlock, monitor, door seal, and microwave generation and
transmission systems shall be repaired, replaced, or adjusted by procedures described in this manual before the
oven is released to the owner.
(e) A microwave leakage check to verify compliance with the Federal performance standard should be performed on
each oven prior to release to the owner.
TABLE OF CONTENTS
SAFETY AND PRECAUTIONS ........................................................................................................ 2
1. FOR SAFE OPERATION ............................................................................................................. 2
2. FOR SAFE SERVICE PROCEDURES ........................................................................................ 2
SPECIFICATIONS ............................................................................................................................ 3
EXTERNAL VIEW ............................................................................................................................ 4
1. OUTER DIMENSION(KOR-6335/KOR-8635) .............................................................................. 4
2. FEATURE DIAGRAM ................................................................................................................... 4
INSTALLATION ................................................................................................................................ 5
OPERATIONS AND FUNCTIONS ................................................................................................... 6
DISASSEMBLY AND ASSEMBLY .................................................................................................. 7
INTERLOCK MECHANISM AND ADJUSTMENT ........................................................................... 17
TROUBLE SHOOTING GUIDE ........................................................................................................ 18
MEASUREMENT AND TEST ........................................................................................................... 20
1. MEASUREMENT OF THE MICROWAVE POWER OUTPUT ..................................................... 20
2. MICROWAVE RADIATION TEST ................................................................................................ 21
3. COMPONENT TEST PROCEDURE ............................................................................................ 22
WIRING DIAGRAM .......................................................................................................................... 23
EXPLODED VIEW AND PARTS LIST ............................................................................................. 24
1. DOOR ASSEMBLY ...................................................................................................................... 24
2. CONTROL PANEL ASSEMBLY ................................................................................................... 24
3. TOTAL ASSEMBLY ...................................................................................................................... 24
1
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 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 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 manafacterer immediately.
IMPORTANT
The wire in this mains lead coloured in accordance with the following code.
Green-and-yellow : Earth
Blue : Neartral
Brown. : live
As the colours of the wires in the manins lead of this appliance may not correspond with the coloured makings 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
` , earth symbol or coloured green-and-yellow.
E'
The wire which is coloured blue must be connected to the terminals which is marked with the letter ` or coloured black.
N'
The wire which is coloured brown must be connected to the terminal which is marked with the letter ` or coloured red.
L'
NOTE
The oven is desigend for counter-top use only.
2
SPECIFICATIONS
MODEL KOR-6335 KOR-8635
POWER SUPPLY 230V ~ 50Hz, SINGLE PHASE WITH EARTHING
POWER MICROWAVE 1200W 1350W
CONSUMPTION
GRILL
COMBINATION
MICROWAVE ENERGY OUTPUT 800W 900W
MICROWAVE FREQUENCY 2450MHz
OUTSIDE DIMENSIONS(W X H X D) 465 x 279 x 365 mm 495 x 294 x 392 mm
(18.3 x 11.0 x 14.4 in.) (19.5 x 11.6 x 15.4 in.)
CAVITY DIMENSIONS (W X H X D) 290 x 220 x 306 mm 320 x 244 x 338 mm
(11.4 x 8.7 x 12.0 in) (12.6 x 9.6 x 13.3 in)
NET WEIGHT APPROX. 13Kg(28.7 lbs.) APPROX. 15Kg(33.1 lbs.)
TIMER 35min. DUAL SPEED
FUNCTION SELECTIONS MICROWAVE
POWER SELECTIONS 5 LEVELS
CAVITY VOLUME 0.7 Cu.Ft. 0.9 Cu.Ft.
* SPECIFICATIONS ARE SUBJECT TO CHANGE WITHOUT NOTICE.
3
EXTERNAL VIEW
1. OUTER DIMENSION(KOR-6335/KOR-8635)
2. FEATURE DIAGRAM
5 4 1
9
10
3 2 6 7 8
1. Safety interlock system
2. Door viewing screen - Allows 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 shut. If the door is opened while the oven operating, the magnetron
will immediately stop operating.
4. Oven cavity
5. Door seal - Door seal maintains the microwave energy within the oven cavity 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 to select a microwave power level.
10. Knob timer - Used in setting cooking time for all functions.
4
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 close to a TV, Radio, antenna or feeder
and so on. Position the oven as far from them as possible.
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, 230Volts, 50Hz.
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 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 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 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 earthing wire with a
earthing 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 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.
5
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. Choose cooking power level by setting V.P.C knob to
the desired position. Refer to cookbook for recomended
power levels.
5. Determine cooking time.
Consult cookbook for recipe timing. NOTE
Oven light turns on and cooling fan starts to operate.
1. When setting timer for less than 2 minutes, turn the
Microwave cooking starts.
timer pass 2 minutes and then return to the correct
6. You may open the door while the oven is operating.
timer setting.
As soon as the door is opened, the safety mechanisms
2. Various clicking noises may be heard when turning
stop the generation of microwave power and the operation
V.P.C knob. This is normal and does not affect the
of cooking timer.
operation of your microwave oven.
If you wish to change the time during cooking, simply adujst
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.
Make sure the oven is properly installed and plugged into the electrical outlet.
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 turns to the desired position, the V.P.C switch has a cycle
(ON/OFF time(sec.)) listed below.
Variable power setting
Approximate Percentage
Symbol ON/OFF time (sec.)
POWER LEVEL of power
KOR-6335 KOR-8635
HIGH MAX MAX 30/0 100 %
MED-HIGH 610W 690W 23.2/6.8 77 %
MEDIUM 440W 490W 16.5/13.5 55 %
DEFROST
WARM ** 260W
130W ** 290W
150W
9.8/20.2
5/25
33 %
17 %
6
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 earthed.
Do not operate on a two-wire extension cord.
The microwave oven is designed to be used with earthed.
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 12A fuse is blown out due to the operation of the monitor switch;
replace primary interlock switch, secondary interlock switch and interlock
monitor switch. SHORT
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 th 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, HVFuse.
7
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 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.
A06
A05
A04
A03
A02
A01
A07
A08
(1) KOR-63350S
REF NO. PART CODE PART NAME DESCRIPTION Q'
TY REMARK
A01 3512203860 FRAME DOOR ABS SG-175 1
A02 3517005630 BARRIER-SCREEN*O SAN 1
A03 3515204100 STOPPER HINGE*T AS KOR-63150S 1
A04 3511705500 DOOR WELD AS KOR-61150S 1
A05 3517002800 BARRIER-SCREEN*I POLYESTER T0.1 1
A06 3512300200 GASKET DOOR PP 1
A07 3513100700 HOOK POM 1
A08 3515101300 SPRING HOOK PW1 1
8
DISASSEMBLY AND ASSEMBLY
(2) KOR-86350S
REF NO. PART CODE PART NAME DESCRIPTION Q'TY REMARK
A01 3512204170 FRAME DOOR ABS SG-175 1
A02 3517005740 BARRIER-SCREEN *O SAN 1
A03 3515204100 STOPPER HINGE *T AS KOR-63150S 1
A04 3511705620 DOOR WELD AS KOR-81250S 1
A05 3517002900 BARRIER-SCREEN *I POLYESTER T0.1 1
A06 3512300400 GASKET DOOR PP 1
A07 3513100700 HOOK POM 1
A08 3515101300 SPRING HOOK PW1 1
(1) Remove the gasket door from door plate.
(2) Remove the barrier screen inner from door plate.
(3) Remove the door frame from door plate.
(4) Remove the stopper hinge top from door plate.
(5) Remove the spring and the hook.
(6) Remove the supporter barrier screen outer from door frame.
(7) Remove the barrier screen outer from door frame.
(8) Reverse the above steps for reassembly.
4. Method to reduce the gap between the door seal and the oven front surface.
(1) To reduce gap located on part `A'
Loosen two screws on stopper hinge top, and then push A
the door to contact the door seal to oven front surface.
Tighten a screw.
(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 a screw. B
NOTE
A small gap may be acceptable if the microwave leakage does not exceed 4mW/cm 2
9
DISASSEMBLY AND ASSEMBLY
5. To remove control panel parts.
B01 B02 B03 B04 B05 B06 B07 B08
B09
(1) KOR-63350S
REF NO. PART CODE PART NAME DESCRIPTION Q'TY REMARK
B01 3513402650 KNOB VPC ABS XR-401, H-2938 1
B02 3516723720 DECORATOR - PANEL ABS SG-175 1
B03 3515101600 SPRING FLAT SUS 301 T0.5 1
B04 3517400530 COUPLER VPC KNOB POM 1
B05 7122401211 SCREW TAPPING T2S TRS 4 x 12 MFZN 1
B06 3517400400 COUPLER TIMER POM 1
B07 3518203800 TIMER KN35MKD 24E-P 1
B08 7122401211 SCREW TAPPING T2S TRS 4x12 MFZN 1
B09 3513402550 KNOB ABS XR-401 H-2938 1
(2) KOR-86350S
REF NO. PART CODE PART NAME DESCRIPTION Q'TY REMARK
B01 3513402650 KNOB VPC ABS XR-401, H-2938 1
B02 3516720270 CONTROL - PANEL ABS SG-175 1
B03 3515101600 SPRING FLAT SUS 301 T0.5 1
B04 3517400530 COUPLER VPC KNOB POM 1
B05 7122401211 SCREW TAPPING T2S TRS 4 x 12 MFZN 1
B06 3517400400 COUPLER TIMER POM 1
B07 3518203800 TIMER KN35MKD 24E-P 1
B08 7122401211 SCREW TAPPING T2S TRS 4 x 12 MFZN 2
B09 3513402550 KNOB ABS XR-401 H-2938 1
10
DISASSEMBLY AND ASSEMBLY
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 thee control panel.
3) Remove two 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 couple 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 the door open button and button spring from the control panel.
10) Reverse the above steps for reassembly.
6. To remove high voltage capacitor.
1) Remove a screw which secure the grounding ring
terminal of the H.V. diode and the capacitor holder.
2) Remove the H.V.diode from the capacitor holder.
3) Reverse the above steps for reassembly.
High voltage circuit wiring
7. To remove magnetron.
1) Remove a screw which secure the magnetron.
2) Remove the magnetron.
3) Reverse the above steps for reassembly.
11
DISASSEMBLY AND ASSEMBLY
NOTE
Never install the magnetron without the metallic gasket plate which is packed with each magnetron to prevent microwave
leakage. Whenever repair work is carried out on magnetron, check the microwave leakage. It shall not exceed 4mW/cm 2
for a fully assembled oven with door normally closed.
8. To remove wind guide assembly.
1) Remove a screw for earthing.
2) Remove the noise filter from the wind guide.
3) Remove a screw which secure the wind guide assembly.
4) Draw forward the wind guide assembly.
5) Pull the fan from the motor shaft.
6) Remove two screws which secure the motor shaded pole.
7) Remove the motor shaded pole.
8) Reverse the above steps for reasembly.
9. To remove H.V. transformert.
1) Remove four screws holding the H.V.transformer.
2) Remove the H.V.transformer.
3) Reverse the above steps for reassembly.
12
INTERLOCK MECHANISM AND ADJUSTMENT
The door lock mechanism is a device which has been specially designed to completely eliminate microwave radiation when the
door is opened during operation, and thus to perfectly prevent the danger resulting from the leakage of microwave.
(1) Primary interlock switch
When the door is closed, the hook locks
the oven door. If the door is not closed properly,
the oven will not operate. When the door is closed,
the hook pushes the button of the microswitch.
Then the button of the primary interlock switch bring
it under ON condition.
(2) Secondary interlock switch and interlock
monitor switch
When the door is closed, the hook pushes the lock
lever downward. The lock lever presses the button of the
interlock monitor switch to bring it under NO condition
and presses the button of the secondary interlock switch
to bring it under ON condition.
ADJUSTMENT
Interlock monitor switch
When the door is closed, the interlock monitor switch should be changed (NO condition) before other switches are closed.
When the door is opened, the interlock monitor switch should be changed (NC condition) after other switches are opened.
3. Adjustment steps
1) Loosen the one mounting screw.
2) Adjust interlock switch assembly position.
3) Make sure that lock lever moves smothly after adjustment is completed.
4) Tighten completely one mounting screw.
NOTE
Microwave emission test should be performed after adjusting interlock mechanism.
If the microwave emission exceed 4mW/cm 2 , readjust interlock mechanism.
13
TROUBLE SHOOTING GUIDE
Following the procedure below to check if the oven is defective or not.
1. Check grounding before checking trouble.
2. Be careful of the high voltage circuit.
3. Discharge the high voltage capacitor.
4. When checking the continuity of the switches, fuse or high voltage transformer, disconnect one lead wire from these parts
and check continuity with the AC plug removed. To do otherwise may result in a false reading or damage to your meter.
(TROUBLE 1) Door shut, timer set, but no cooking takes place.
Does the fan motor work when you YES (Refer to next page)
shut the door and turn the timer?
NO
Does the YES Check continuity of interlock Continuity Replace primary, secondary
fuse blow? monitor switch with door shut. interlock switch and interlock
monitor switch.
NO NO Continuity
Replace fuse and check Replace primary, secondary
NO
continuity of both interlock interlock switch and interlock
switch's contact and monitor monitor switch.
switch's contact with door
partially open until monitor
switch contact.
Both continuity
Disconnect one side of the Normal Replace high
lead wire connected from voltage
transformer to the high voltage capacitor.
capacitor, and operate oven.
Fuse again Replace high
voltage transformer
If outlet has proper voltage, NO Continuity Replace power
check continuity of power supply cord.
supply cord.
14
TROUBLE SHOOTING GUIDE
Does the fan motor work when you shut
the door and turn the timer?
YES
Does the oven lamp light? NO Replace or repair oven lamp,
Does the turntable turn? turntable motor.
YES
Normal
reading should
be approx. 0
NO
If microwave do not oscillate, Continuity Check continuity filament NO Continuity Replace high
check continuity of filament tap (3.3V) of high voltage. voltage
of magnetron. transformer.
Continuity
Poor continuity Continuity in
the reverse
Check the diode for direction. Replace high
continuity in the reverse and voltage diode.
normal directions.
Continuity Replace
magnetron.
Meter with 6V or higher
voltage batteries should
be used to check the normal
direction resistance of
the diode.
Check the isolation of NO Good Replace high
filament winding of high voltage
voltage transformer. transformer.
Good
Replace
magnetron.
15
MEASUREMENT AND TEST
1. MEASUREMENT OF THE MICROWAVE POWER OUTPUT
Microwave output power can be checked by indirectly measuring the temperature rise of a certain amount of water exposed
to the microwave as directed below.
PROCEDURE
1. Microwave power output measurement is made with the microwave oven
supplied at rated voltage and operated at its maximum microwave power
_
setting with a load of 1000 + 5cc of potable water.
2. The water is contained in a cylindrical borosilicate glass vessel having a
maximum material thickness of 3 mm and an outside diameter of approximately
190mm.
3. The oven and the empty vessel are at ambient temperature prior to the
start of the test.
_ _
The initial temperature of the water is 10 + 2 (50 + 3.6 )
It is measured immediately before the water is added to the vessel.
After addition of the water to the vessel, the load is immediately placed on
the center of the shelf, which is in the lowest normal position.
4. Microwave power is switched on.
5. Heating time should be exactly A seconds. (Refer to table as following)
Heating time is measured while the microwave generator is operating at full power.
The filament heat-up time for magnetron is not included.
6. The initial and final temperature of water is selected so that the maximum difference between the ambient and final water
temperature is 5K.
7. The microwave power output P in watts is calculated from the following formula :
P = 4187 X T/t
T is difference between initial and ending temperature.
t is the heating time.
_
The power measured should be B (Refer to SPECIFICATIONS) W + 10.0%.
CAUTION
1. Water load should be measured exactly to 1 liters.
2. Input power voltage should be exactly specified voltage (Refer to SPECIFICATIONS)
_ _
3. Ambient temperature should be 20 + 2 (68 + 3.6 )
* Heating time for power output :
A(second) 70 64 60 56 52 49 47 44 42 40 38
B(W) 600 650 700 750 800 850 900 950 1000 1050 1100
16
MEASUREMENT AND TEST
2. MICROWAVE RADIATION TEST
WARNING
Make sure to check the microwave leakage before and after repair of adjustment.
Always start measuring of an unknown field to assure safety for operating personnel from microwave energy.
Do not place your hands into any suspected microwave radiation field unless the safe density level is known.
Care should be taken not to place the eyes in direct line with the source of microwave energy.
Slowly approch the unit under test until the radiometer readds an appreciable microwave leakage from the unit under the test.
PROCEDURES
1. Prepare Microwave Energy Survey, 600cc glass
beaker, and glass thermometer 100 (212 ).
_
2. Pour 275cc + 15cc of tap water initially at 20 + 5
_ _
(68 + 9 )
in the 600cc glass breaker with an inside diameter of approx.
95mm(3.5in.).
3. Place it at the center of the tray and set in a cavity.
4. Close the door and operate the oven.
5. Measure the leakage by using Microwave Energy Survey
Meter with dual ranes, set to 2450MHz.
1) Measured radiation leakage must not exceed the value
prescribed below. Leakage for a fully assembled oven with
door normally closed must be less than 4mW/cm 2.
2) When measuring the leakage, always use the 5cm(2 in.)
space cone with probe. Hold the probe perpendicular to
the cabinet and door. Place the space cone of the prove
on the door, cabinet, door seem, door viewing screen, the
exhaust air vents and the suction air vents.
3) Measuring should be in a counter-clockwise direction at a
rate of 1 in./sec. If the leakage of the cabinet door seem is
unknown, move the probe more slowly.
4) When measuring near a corner of the door, keep the probe perpendicular to the areas making sure the probe end at
the base of the cone does not get closer than 2 in. from any metal. If it does not, erroneous reading may result.
17
MEASUREMENT AND TEST
3. COMPONENT TEST PROCEDURE
High voltage is present at the high voltage terminal of the high voltage transformer during any cooking cycle.
It is neither necessary nor advisable to attempt measurement of the high voltage.
Before touching any oven components or wiring, always unplug the oven from its power source and discharge the capacitor.
1. High voltage transformer
(1) Remove connections from the transformer terminals and check continuity.
(2) Normal readings should be as follows:
Secondary winding ........................ Approx. 110 _
+ 10%
Filament winding ............................................... Approx. 0
Primary winding ................................................ Approx. 0
2. High voltage capacitor
(1) Check continuity of capacitor with meter on the hightest OHM scale.
(2) A normal capacitor will show continuity for a short time, and then indicate 10M once the capacitor is charged.
(3) A shorted capacitor will show continuous continuity.
(4) An open capacitor will show constant 10M .
(5) Resistance between each terminal and chassis should be infinite.
3. High voltage diode
(1) Isolate the diode from the circuit by disconnecting the leads.
(2) With the ohmmeter set on the highest resistance scale measure the resistance across the diode terminals.
Reverse the meter leads and again observe the resistance reading.
Meter with 6V, 9V or higher voltage batteries should be used to check the front-back resistance of the diode,
otherwise an infinite resistance amy be read in both directions.
A normal diode' resistance will be infinite in one direction and several hundred K
s in the other direction.
4. Magnetron
For complete magnetron diagnosis, refer to "Measurement of the Microwave Power Output ".
Continuity checks can only indicate and open filament or a shorted magnetron.
To diagnose for an open filament or a shorted magnetron.
(1) Isolate magnetron from the circuit by disconnecting the leads.
(2) A continuity check across magnetron filament terminals should indicate 0.1 or less.
(3) A continuity check between each filament terminal and magnetron case should read open.
5. Fuse
If the fuse in the primary and monitor switch circuit is blown when the door is opened, check the primary and monitor
switch before replacing the blown fuse.
In case the fuse is blown by an improper switch operation, replace the defective switch and fuse at the same time.
Replace just the fuse if the switches operate normally.
18
WIRING DIAGRAM
19
EXPLODED VIEW AND PARTS LIST
1. DOOR ASSEMBLY
Refer to Disassembly and assembly.
2. CONTROL PANEL ASSEMBLY
Refer to Disassembly and assembly.
3. TOTAL ASSEMBLY
F01 F02 F03 F04 F05 F06 F07 F08 F09 F10
F48
F47 F11
F46 F12
F45
F13
F44
F14
F43
F15
F16
F17
A00
F18
F19
F20
F21
F22
B00
F23
F24
F25
F42 F41 F40 F39 F38 F37 F36 F35 F34 F33 F32 F31 F30 F29 F28 F27 F26
20
EXPLODED VIEW AND PARTS LIST
(1) KOR-63350S
REF NO. PART CODE PART NAME DESCRIPTION SUPPLY REMARK
A00 3511712170 DOOR AS KOR-63350S 1
B00 3516719670 CONTROL-PANEL AS KOR-63350S 1
F01 3510801310 CABINET PCM T0.6 GE 1
F02 7112401011 SCREW TAPPING T1 TRS 4X10 MFZN 3
3516109000 CAVITY WELD AS CAVITY WELD AS 1
F03
3516111900 CAVITY JOINT AS CAVITY WELD AS
F04 7122401211 SCREW TAPPING T2S TRS 4X12 MFZN 1
F05 7122401211 SCREW TAPPING T2S TRS 4X12 MFZN 1
F06 7112401011 SCREW TAPPING T1 TRS 4X10 MFZN 2
F07 35113AEQ0D CORD POWER AS 3X0.75 70X70 100-RTML 1
F08 4413A90012 CLAMP POWER CORD NYLON 66 1
F09 7112401011 SCREW TAPPING T1 TRA 4X10 MFZN 1
F10 7122401211 SCREW TAPPING T2S TRS 4X12 MFZN 1
4415D67620 FUSE 250V 12A 65TS 1
F11
4415D67120 FUSE 250V 12A MDA
F12 3518606200 NOISE-FILTER DWLF-M12 1
F13 7121403011 SCREW TAPPING T2S PAN 4X30 MFZN 2
3963513100 MOTOR SHADED POLE 230V 17W OEM-10DWC2-A07 1
F14
3963512310 MOTOR SHADED POLE 230V 20W MW 10CA-M02
F15 3512517000 GUIDE WIND PP 1
F16 3511800300 FAN PP+30% GLASS 1
F17 3518002200 MAGNETRON 2M218HF 1
F18 3516004000 SPECIAL SCREW T2 BOLT FLANGE 5X12 DACRO 1
F19 7S422X4081 SPECIAL SCREW TT2 TRSLL 4X8 SE MFZN 1
F20 3513003200 HOLDER HV CAPACITOR SECC T0.6 1
F21 3518302200 CAPACITOR HV 2100VAC 0.98uF #187 1
F22 3518400400 DIODE HV HVR-1X-3AB 12KV #187 1
F23 3518701100 FUSE HV 5KV 0.55A HV-41A55-02 1
F24 3518113700 TRANS HV DY-N80S0-63T 1
F25 3516003700 SPECIAL SCREW TT3 HEX 4X8 FLG MFZN 4
F26 3510311700 BASE SBHG T0.8 1
F27 7112410011 SCREW TAPPING T1 TRS 4X10 MFZN 5
F28 3512100900 FOOT PP DASF-130 2
F29 7S422X4081 SPECIAL SCREW TT2 TRS 4X8 MFZN 1
F30 3515201101 STOPPER HINGE *U SCP-1 T2.5 1
F31 7122401211 SCREW TAPPING T2S TRS 4X12 MFZN 1
F32 3518570400 SWITCH S/A*RELAY DWSR-1 1
F33 4415A17352 SW MICRO VP-533A-OF SPNO #187 200G 1
F34 4415A66910 SW MICRO VP-531A-OF/SZM-V16-FA-61 1
F35 4415A17352 SW MICRO VP-533A-OF SPNO #187 200G 1
F36 3513702600 LEVER LOCK POM 1
F37 3513811710 LOCK POM 1
F38 3513601600 LAMP BL 240V 25W T25 C7A H187 1
21
EXPLODED VIEW AND PARTS LIST
REF NO. PART CODE PART NAME DESCRIPTION SUPPLY REMARK
F39 7121400611 SCREW TAPPING T2S PAN 4X6 MFZN 1
3966310100 MOTOR SYNCRO 220V 2.5W GM-16-24FD12 1
F40
3966310100 MOTOR SYNCRO 220V 2.5W M2LJ49ZT52
F41 3518905300 THERMOSTAT OFF:75 ON:65 H #187 NB 1
F42 3513003400 HOLDER THERMOSTAT PBT 1
F43 3516003700 SPECIAL SCREW TT3 HEX 4X8 FLG MFZN 1
F44 3511406200 COVER WAVE GUIDE HEATPROOF PP 1
F45 3717400620 COUPLER XAREC 1
F46 3514700710 ROLLER TEFLON 3
F47 3512517300 GUIDE ROLLER PP 5113MF6 A353B 1
F48 3517203600 TRAY GLASS 1
22
EXPLODED VIEW AND PARTS LIST
(2) KOR-86350S
REF NO. PART CODE PART NAME DESCRIPTION SUPPLY REMARK
A00 35117127720 DOOR AS KOR-86350S 1
B00 3516720550 CONTROL-PANEL AS KOR-86350S 1
F01 3510801430 CABINET PCM T0.6 GE 1
F02 7112401011 SCREW TAPPING T1 TRS 4X10 MFZN 3
3516109200 CAVITY WELD AS CAVITY WELD AS 1
F03
3516109700 CAVITY JOINT AS CAVITY WELD AS
F04 7122401211 SCREW TAPPING T2S TRS 4X12 MFZN 1
F05 7122401211 SCREW TAPPING T2S TRS 4X12 MFZN 1
F06 7112401011 SCREW TAPPING T1 TRS 4X10 MFZN 2
F07 35113AEQ0D CORD POWER AS 3X0.75 70X70 100-RTML 1
F08 4413A90012 CLAMP POWER CORD NYLON 66 1
F09 7112401011 SCREW TAPPING T1 TRA 4X10 MFZN 1
F10 7122401211 SCREW TAPPING T2S TRS 4X12 MFZN 1
4415D67620 FUSE 250V 12A 65TS 1
F11
4415D67120 FUSE 250V 12A MDA
F12 3518606200 NOISE-FILTER DWLF-M12 1
F13 7121403011 SCREW TAPPING T2S PAN 4X30 MFZN 2
3963513100 MOTOR SHADED POLE 230V 17W OEM-10DWC2-A07 1
F14
3963512310 MOTOR SHADED POLE 230V 20W MW 10CA-M02
F15 3512517000 GUIDE WIND PP 1
F16 3511800300 FAN PP+30% GLASS 1
F17 3518002200 MAGNETRON 2M218HF 1
F18 3516004000 SPECIAL SCREW T2 BOLT FLANGE 5X12 DACRO 1
F19 7S422X4081 SPECIAL SCREW TT2 TRSLL 4X8 SE MFZN 1
F20 3513003200 HOLDER HV CAPACITOR SECC T0.6 1
F21 3518302200 CAPACITOR HV 2100VAC 0.98uF #187 1
F22 3518400400 DIODE HV HVR-1X-3AB 12KV #187 1
F23 3518701100 FUSE HV 5KV 0.55A HV-41A55-02 1
F24 3518114000 TRANS HV DW-N90S0-86T 1
F25 3516003700 SPECIAL SCREW TT3 HEX 4X8 FLG MFZN 4
F26 3510311900 BASE SBHG T0.8 1
F27 7112410011 SCREW TAPPING T1 TRS 4X10 MFZN 5
F28 3512100900 FOOT PP DASF-130 2
F29 7S422X4081 SPECIAL SCREW TT2 TRS 4X8 SE MFZN 1
F30 3515201101 STOPPER HINGE *U SCP-1 T2.5 1
F31 7122401211 SCREW TAPPING T2S TRS 4X12 MFZN 1
F32 3518570400 SWITCH S/A*RELAY DWSR-1 1
F33 4415A17352 SW MICRO VP-533A-OF SPNO #187 200G 1
F34 4415A66910 SW MICRO VP-531A-OF/SZM-V16-FA-61 1
F35 4415A17352 SW MICRO VP-533A-OF SPNO #187 200G 1
F36 3513702600 LEVER LOCK POM 1
F37 3513811710 LOCK POM 1
F38 3513601600 LAMP BL 240V 25W T25 C7A H187 1
23
EXPLODED VIEW AND PARTS LIST
REF NO. PART CODE PART NAME DESCRIPTION SUPPLY REMARK
F39 7121400611 SCREW TAPPING T2S PAN 4X6 MFZN 1
3966310100 MOTOR SYNCRO 220V 2.5W GM-16-24FD12 1
F40
3966310110 MOTOR SYNCRO 220V 2.5W M2LJ49ZT52
F41 3518905300 THERMOSTAT OFF:75 ON:65 H #187 NB 1
F42 3513003400 HOLDER THERMOSTAT PBT 1
F43 3516003700 SPECIAL SCREW TT3 HEX 4X8 FLG MFZN 1
F44 3511406200 COVER WAVE GUIDE HEATPROOF PP 1
F45 3717400620 COUPLER XAREC 1
F46 3514700710 ROLLER TEFLON 3
F47 3512517300 GUIDE ROLLER PP 5113MF6 A353B 1
F48 3517203500 TRAY GLASS 1
24
DAEWOO ELECTRONICS CO., LTD
686, AHYEON-DONG MAPO-GU
SEOUL, KOREA
C.P.O. BOX 8003 SEOUL, KOREA
TELEX : DWELEC K28177-8
CABLE : " DAEWOOELEC"
FAX : 02)360-7877
TEL : 02)360-7804
E-mail : [email protected]
//
PRINTED DATE : MAR. 2000