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Service Manual
Microwave Oven
KOG-846T
Defrost
Combi Weighf Time
M/W
Grill
Lock
Auto
cook
Defrost
Waff
g
Autocook
Grill
A
Combi
Power
A
Auto Cook Menu
Stop Clear
More
Less
Tim
Clock
e ig h
e/W
t
Qua
nf
it y
DAEWOO ELECTRONICS CO., LTD.
PROPER USE AND SERVICE PRECAUTIONS
CAUTION : This Device is to be Serviced Only by Properly Qualified Service Personnel. Consult the Service
Manual for Proper Service Procedures to Assure Continued Safety Operation and for Precautions
to be Taken to Avoid Possible Exposure to Excessive Microwave Energy.
PRECAUTIONS TO BE OBSERVED BEFORE AND
DURING SERVICING TO AVOID POSSIBLE
EXPOSURE TO EXCESSIVE MICROWAVE ENERGY
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.
(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 microwave power 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.
2. Correct Installation
1) This microwave oven weighs 18 kg(40lbs.) and must be placed on a horizontal base strong enough to support
this weight.
2) The oven should be placed as far from high temperature source and vapour as possible.
3) The power supply cord is about 1.6m (5.25ft) long. Earthing is required when connecting the power source.
4) Power consumption of this oven is approximately 2.8 kw. It is suggested that the unit is operated on such power
line(about 12 amperes) that can provide more power than this rating.
5) Object must not be placed on the top enclosure so as not to obstruct air flow for ventilation.
TABLE OF CONTENTS
PROPER USE AND SERVICE PRECAUTIONS
SPECIFICATIONS
NAMES AND FUNCTION OF PARTS
CONTROL PANEL
HOW TO SET THE OVEN CONTROLS
PROGRAMMING COMBINATIONS
INTERLOCK MECHANISM FUNCTIONS AND ADJUSTMENTS
PRECAUTIONS FOR DISASSEMBLY AND REPAIR
DISASSEMBLY AND ASSEMBLY
TROUBLE SHOOTING GUIDE
MEASUREMENT
COMPONENT TEST PROCEDURE
WIRING DIAGRAM
SCHEMATIC DIAGRAM
WIRING DIAGRAM(GERMANY)
SCHEMATIC DIAGRAM(GERMANY)
EXPLODED VIEWS AND PARTS LIST
PRINTED WIRING BOARD
P.C.B. CIRCUIT DIAGRAM
P.C.B. LOCATION NO
2
3
5
6
7
9
17
18
20
21
28
34
36
37
38
40
41
43
46
53
54
CAUTION
MICROWAVE RADIATION
PERSONNEL SHOULD NOT BE EXPOSED TO THE MICROWAVE ENERGY WHICH MAY RADIATE
FROM THE MAGNETRON OR OTHER MICROWAVE GENERATING DEVICE IF IT IS IMPROPERLY
USED OR CONNECTED. ALL INPUT AND OUTPUT MICROWAVE CONNECTIONS, WAVEGUIDE,
FLANGES AND GASKETS MUST BE SECURE. NEVER OPERATE THE DEVICE WITHOUT A
MICROWAVE ENERGY ABSORBING LOAD ATTACHED. NEVER LOOK INTO AN OPEN WAVEGUIDE
OR ANTENNA WHILE THE DEVICE IS ENERGIZED
3
SPECIFICATIONS
IMPORTANT
Power Supply
The wires in this mains lead coloured in accordance with the following code.
Green-and-yellow
: Earth
Blue
: Neutral
Brown
: Live
As the colours of the wires in the mains 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’ or by earth symbol or 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 with terminal which is marked with the letter ‘L’ or
coloured red.
Power Consumption
Microwave
230V~, 50Hz
240V~, 50Hz(U.K)
1450 W
1500W
Output Power
900W (IEC 705)
900 Watts
Frequency
2450 MHz
2450 MHz
Grill power consumption
1400 W
1500W
Simultaneous Heating Power Consumption
2800 W
2950 W
Outside Dimensions (W X H X D)
501 X 319 X 389 mm (19.7 X 12.6 X 15.3 in.)
Cavity Dimensions (W X H X D)
310 X 229 X 330 mm (12.2 X 9.0X 13.0 in.)
Net Weight
Approx. 18 kg (40 Ibs.)
Timer
Digital times 99 min
Select Function
Microwave/Grill/Combination/Defrost/Program cook
Microwave Power Level
5 stages
* Specifications are subject to change without notice.
NOTE : This oven is designed for counter-top use only.
EXTERNAL VIEWS
Defrost
Combi Weighf Time
M/W
Grill
Lock
Auto
cook
Defrost
Waff
g
Autocook
Grill
A
A
Auto Cook Menu
319
Combi
294
Power
Stop Clear
More
Less
Tim
Clock
e/W
e ig h
t
Qua
n
fi t y
348
236
501
389
FIG.1 FRONT VIEW
4
FIG. 2 SIDE VIEW
5
NAMES AND FUNCTION OF PARTS
3
4
5
CONTROL PANEL
6
Grill
Auto
cook
Defrost
2
Defrost
Combi Weighf Time
M/W
Lock
Waff
g
Autocook
Grill
A
Combi
Power
A
7
Auto Cook Menu
Stop Clear
More
Less
Tim
Clock
1
9
e/W
e ig h
t
Qua
n
fi t y
8
8
11
10
¤ DOOR SEAL
Door seal maintains the microwave within the
oven cavity and prevents microwave leakage.
¤ CONTROL PANEL
¤ GLASS TURN -TABLE TRAY
Rotates during cooking and ensure even
distribution of Microwaves. It can also be used as
a cooking utensil.
¤Ł DOOR HOOK
When door is closed, it will autoamtically lock shut.
If door is opened while oven is operating,
magnetron tube will immediately stop operating.
¤ OVEN FRONT PLATE
¤ ROLLER GUIDE
This must be always used for cooking together
with the glass turn-table tray. Use a mild
detergent, water and a soft cloth to clean the
roller guide.
¤Ø DOOR SCREEN
Allows viewing of food. Microwave cannot pass
through perforations in screen.
¤Œ GRILL HEATER
Turns on when grill and simultaneous cooking is
selected.
¤æ COUPLER
This fits over the shaft in the center of the oven’s
cavity floor.
This is to remain in the oven for all cooking.
¤º OVEN LAMP
Automatically turns on during oven operating.
¤ SAFETY INTERLOCK SYSTEM
6
7
OPERATION
HOW TO SET THE OVEN CONTROLS
TO STOP THE OVEN WHILE THE OVEN IS OPERATING
Tips : ¡ Be sure to read the cookbook’s introduction before operating the oven.
¡ Also remember to read this operating instruction for proper safety information and instruction before using t
he oven.
¡ See the cookbook for specific recipes.
¡ Prior to setting the controls, place one cup of water in the oven, in a heat-proof glass measuring cup, for
testing purposes.
¡ When setting the controls, everytime a button is pressed, a beep can be heard.
1. Press
(STOP/CLEAR) button.
- You can restart the oven by pressing
(START) button.
- Press
once more to erase all instruction except clock.
2. Open the door
- You can restart the oven by closing the door and pressing
button.
NOTE :
NOTE : Ovne stops operating when door is opened.
ERASING INSTRUCTIONS
ƒUPress
(STOP/CLEAR) button to erase all instructions you set previously.
ƒUOpening the oven door during cooking dose not erase cooking instruction.
ƒUIf you press twice
CLOCK
When the oven is plugged in, “0:00” appears in the display window.
The two dots between the hour and minutes are the clock indicator light. They will start to flash on and off.
The time of day will be displayed at all times, except when the oven is operating.
In the oven of a power failure or if the oven is unplugged, the clock will have to be reset for the proper
time. Once power is restored or oven is plugged in, the display will show “0:00”.
¡ To reset the time of day, repeat the steps given below.
¡ To check the time of day while the oven is operating, push the CLOCK button, then the time will
be displayed for 3 seconds.
¡ When you turn DIAL KNOB, minutes are increased by to turn right and hours are increased as
to turn left.
¡
¡
¡
¡
button during operation, the cooking instruction is all erased.
SETTING THE CONTROL
1. Press CLOCK button.
If you push the CLOCK button once
again, you can select 12 hour clock
system.
Then guide lamp will starts blinking.
This example is 24 hour clock system.
NOTE : This oven is multiple
clock system.
NOTE : If you are not setting current time for 3 seconds, display return to old time.
NOTE :
• If you selected 12 hour clock
system, this digital clock
allows you to set from 1:00 to
12:59.
• If you selected 24 hour clock
system, this digital clock allows
you to set from 0:00 to 23:59.
•The colon will stop blinking.
2. Turn left the DIAL KNOB for hour
you want.
3. Turn right the DIAL KNOB for
minute you want
8
9
The display will show present time,
and the colon starts blinking. This
digital clock allows you to set to
“10:10”
1. Press CLOCK button.
WEIGHT DEFROST
NOTE : • This digital weight allows you set from 200g to 3000g.
• Whenever you press this button, the display is circulated WEIGHT DEFROST, TIME DEFROST , and
MICROWAVE mode.
SETTING THE CONTROL
1. Press DEFROST button once.
TIME DEFROST
The WEIGHT DEFROST indicator
light will come on.
The g indicator light will start blinking.
WEIGHT
SETTING THE CONTROL
The TIME DEFROST indicator light
will light.
1. Press DEFROST button twice.
g
TIME
2. Turn the DIAL KNOB for the desired
defrosting weight
For example : 1000g
20:00 will show in the display
2. Turn the DIAL KNOB for the desired
defrosting time.
TIME
For example : 20 minutes.
g
NOTE : Time can be set up to
99 minutes.
3. Press
button
WEIGHT
3. Press
The 1000 will show in the display
This display represent 1000g.
WEIGHT
button.
TIME
The WEIGHT DEFROST indicator
light will starts blinking to show the
oven in WEIGHT DEFROST mode.
The TIME DEFROST indicator light
will start blinking to show the oven is in
TIME DEFROST mode.
4. Buzzer will sound at the end of the cooking time, The indicator light go off. The display panel will return to the time
of day. The oven light will turn off and the turntable will stop turning.
4. Buzzer will sound at the end of the cooking time, The indicator light go off. The display panel will return to the time
of day. The oven light will turn off and the turntable will stop turning.
NOTE : During the defrosting operation, turn over the food after buzzer sound for completed defrosting.
NOTE : During the defrosting operation, turn over after buzzer sound for completed defrosting.
10
11
MICROWAVE
GRILL
NOTE : • To insure the best microwave and defrost results, be sure to start with a cool oven.
Let the oven cool 15~20 minutes with the door slightly open.
• Power levels are 900W, 700W, 500W, 350W, and 150W
• It is displayed after an interval of 10 seconds from 10 seconds to 5 minutes, 30 seconds from 5 minutes
to 10 minutes, 1 minute from 10 minutes to 99 minutes
NOTE : •
•
•
•
•
The heating element is located in the top of the oven.
There is no pre-heating the oven for grilling. Place food inside the oven when setting the controls.
The GRILL button is used with COMBI function.
Whenever this button is pressed, display is changed to GRILL/COMBI mode.
The setting time is increased if you are to turn right the DIAL KNOB.
The setting time is decreased if you are to turn left the DIAL KNOB.
• It is displayed after an interval of 10 seconds from 10 seconds to 5 minutes, 30 seconds from 5 minutes
to 10 minutes, 1 minutes from 10 minutes to 60 minutes.
SETTING THE CONTROL
1. Press POWER button more than
three times
By repeatedly pressing this button,
you can also select other power
levels.
For example : 900 WATT
The W/W indicator light will light
The WATT indicator light start blinking.
M/W
SETTING THE CONTROL
1. Press GRILL button once.
The GRILL indicator light will light.
GRILL
Watt
2. Turn the DIAL KNOB for the desired
cooking time.
For example : 10 minutes
10:00 will show in the display.
M/W
2. Turn the DIAL KNOB for the desired
cooking time.
For example : 25 minutes.
3. Press
25:00 will show in the display.
GRILL
NOTE : Time can be set up to
60 minutes.
The M/W indicator light will start
blinking to show the oven is in the
micorwave MODE
button
M/W
3. Press
button
The GRILL indicator light will start
blinking
GRILL
4. Buzzer will sound at the end of the cooking time, The indicator light go off. The display panel will return to the time
of day. The oven light will turn off and the turntable will stop turning.
4. Buzzer will sound at the end of the cooking time, The indicator light go off. The display panel will return to the time
of day. The oven light will turn off and the turntable will stop turning.
12
13
AUTO COOK
TO SET COMBI COOKING
NOTE : • Microwave and Gril operate simultaneously (or sequentially) in this mode.
• Whenever you press COMBI button, display is changed “ : 0”, “ : H”, “ : L”,
Therefore you can select power level of MICROWAVE
NOTE : • There is programmed for cooking of nine kinds (1~9).
• You don’t have to worry about setting time, power and function.
1. Press AUTO COOK button.
SETTING THE CONTROL
1. Press COMBI button once again.
The AUTO COOK indicator light will
light “AC-1” will show in the display.
The corresponding COMBI indicators
will light on the display.
COMBI
AUTO
COOK
2. Turn the DIAL KNOB for the desired
cooking time.
For example : 10 minutes.
10 : 00 will show in the display
COMBI
2. Select the desired cooking.
For example : SOUP
Press AUTO COOK button twice.
“AC-2” will show in the display.
NOTE : Time can be set up to
99 minutes.
AUTO
COOK
3. If you want to select other menu, press AUTO COOK button until display your desired cooking menu.
3. Press
button
COMBI
The COMBI indicator light will start
blinking
4. Turn the DIAL KNOB for desired
cooking quantity.
AUTO
COOK
4. Buzzer will sound at the end of the cooking time, The indicator light go off. The display panel will return to the time
of day. The oven light will turn off and the turntable will stop turning.
“3” will show in the display.
5. Select the desired cooking quantity.
For example : 3(600g)
NOTE :
DISPLAY
:0
:H
:L
POWER LEVEL
500W
600W
400W
AUTO
COOK
14
15
6. If you want to select other quantity, press quantity button once again until display you desired.
SPEEDY COOK
1. Push
button
Then start lamp will start blinking.
Whenever the button is pressed,
cooking time is increased 30 seconds.
If the time was setting, this oven is
operated automatically after 2 seconds
to microwave high power.
7. You can operate MORE/LESS than programmed time as pressing MORE/LESS button whenever press
MORE/LESS button, display is changed “10” , “0” or “-10”
-10 : Adds 10% for programmed time.
0 : Add Zero
-10 : Remove 10% for prorammed time.
8. Push
button
For example : MORE/LESS 0
The oven will now start auto cook for
menu 2.
The indicator light starts blinking.
NOTE : This key is increased from 30 seconds to 5 minutes.
If you are pressing more than about 0.5 seconds, the time is increased 30 seconds continuously.
CHILD SAFETY LOCK
AUTO
COOK
9. Buzzer will sound at the end of the cooking time. The indicator light will go off. The display panel will return to the
time of day, the oven light will turn off and the turntable will stop turning.
¡ The safty lock prevents unwanted oven operation such as by small children.
¡ To set, press STOP/CLEAR for 3 seconds, lock indicator light starts blinking.
¡ To cancel, press STOP/CLEAR for 3 seconds, lock indicator goes off.
PROGRAMMING COMBINATIONS
NOTE : ¥ AUTO COOK menu and quantity
MENU NO.
QUANTITY NO.
1
1
BEVERAGE
STAGE COMBINATIONS
MENU NO.
QUANTITY NO.
1 CUP
1
700g
2
2 CUPS
2
800g
3
3 CUPS
3
900g
4
4 CUPS
7
ROAST BEEF
4
1000g
1
200g
8
ROAST PORK
5
1100g
2
SOUP
2
400g
6
1200g
3
CASSEROLE
3
600g
7
1300g
4
800g
1
700g
2
800g
4
VEGETABLE I
-
680g
9
5
VEGETABLE II
-
450g
6
FISH FILLETS
-
450g
ROAST
CHICKEN
16
3
900g
4
1000g
5
1100g
6
1200g
7
1300g
8
1400g
9
1500g
This oven has the ability to be programmed to do up to three consecutive functions. These combinations are
given below and either the complete program or part of it can be used.
STAGE COOKING
TIME / WEIGHT - DEFROST
MICROWAVE
GRILL
GRILL
MICROWAVE
* When you set stage mode, indicator is lighted only setting.
* When you press START button, all indicators of setted functions are lighted, and
17
INTERLOCK MECHANISM FUNCTIONS AND ADJUSTMENTS
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.
(2) Secondary interlock switchm, monitor interlock switch and D.O.M switch
When the door is closed, the hook pushes the lever lock forward, and the lever presses the button of the interlock
monitor switch to bring it under ‘OFF’ condition. Simultaneously, the lever lock presses the button on the
secondary interlock switch and D.O.M switch to bring it under ‘ON’ condition.
(1) Primary interlock switch
When the door is closed, the hook will lock the oven door.
If the door is not closed properly, the oven will not operate.
When the door is closed, the hook pushes the lever downward.
The lever presses the button of the primary interlock switch to bring it under ‘ON’ condition.
Monitor interlock s/w
Lever hook
Hook
Door open monitor s/w
Lever pivot
Hook
Mounting screw
Secondary interlock s/w
Lever hook
Button
Lever lock
Spring hook lever
Primary interlock
switch
Adjustment 1
Adjustment 2
When the door is closed, the switch button is pushed
by the hook.
The movement of the switch button should exceed 1.2
mm measured at the top of the button.
Interlock monitor switch
When the door is closed, the monitor switch should be opened before other switches closed.
When the door is opened, the monitor switch should be closed after other switches opened.
Secondary interlock switch and D.O.M switch
The movement of the switch button should exceed 1.2mm measured at the top of the button.
Adjustment step:
a) Loosen the two mounting screws.
b) Adjust the interlock switch assembly position.
c) Confirm the gap(1.2mm) described above.
d) Make sure that the latch lever moves smoothly after adjustment is completed
e) Completely tighten the two mounting screws.
18
19
PRECAUTIONS FOR DISASSEMBLY AND REPAIR
DISASSEMBLY AND ASSEMBLY
- Cautions to be observed when trouble shooting.
1. To remove cabinet (Refer to Fig. 2)
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) Remove four screws on cabinet back.
2) Push the cabinet backward.
(1) Always remove the power plug from the outlet before servicing.
(2) use an insulated screwdriver and wear rubber gloves when servicing the high voltage side.
(3) Warning about the electric charge in the high voltage capacitor. When inspecting and repairing the high voltage
side, always short the capacitor terminals and make sure of discharge.
FIG. 2
2. To remove parts of guide wind assembly
(Refer to Fig.3)
1) Release the earth screw F57
2) Remove the noise-filter F52 to the guide wind F42 .
3) Pull the fan F45 to the motor shaft.
4) Release two screws F44 Which secure the motor shaded pole F43 .
5) Remove the motor shaded pole.
6) Release a screw F48 Which secure the holder capacitor F47 .
7) Remove the holder capacitor and capacitor F46 to the guide wind.
8) Remove the diode H.V F49 .
9) Reverse the above steps for reassembly.
1. Check the earthing.
Do not operate on a 2-wire extension cord. The
microwave oven is designed to be used when earthed.
It is imperative, therefore, to makes sure it is earthed
properly before begining repair work.
2. Warning about the electric charge in the
high voltage capacitor. (Refer to Fig. 1)
F53
For about 30 seconds after the operation stops, 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 screw
driver to discharge.
F57
F52
F44
F42
FIG.1
(4) When the fuse(normal blow type) is blown out due to the operation of the monitor switch; replace primary,
secondary interlock switch and monitor switch.
Refer 18~19 page for the necessary adjustment.
F45
F43
(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.
F49
F46
CAUTION : Service personnel should remove their watches whenever working close to or repairing the
magnetron.
F48
WARNING: When servicing the appliance, care is required when touching or replacing high potential parts due
to electrical shock or exposure of microwave energy. These parts are as follows-H.V. transformer,
Magnetron, H.V. Capacitor, H.V. Diode.
20
F47
FIG. 3
21
3. To remove lamp (Refer to Fig. 4)
5. To remove magnetron and magnetron thermostat (Refer to Fig. 6)
F37
1) Remove a screw F37 holding lamp F36 to the
guide air F34
2) Remove the lamp.
3) Reverse the above steps for reassembly.
1) Remove two secrews F26 which secure the thermostat
2) Remove the thermostat.
3) Remove three screws F24 which secure the magnetron
4) Remove the magnetron.
5) Reverse the above steps for reassembly.
F36
F25.
F23 .
F34
FIG. 4
F26
F25
4. To remove H.V. Transformer
(Refer to Fig. 5)
F23
F21
1) Remove four screws F22 which secure the H.V.
Transformer bracket to the base plate.
2) Remove the H.V. Transformer F21
F24
FIG. 6
CAUTION : Never install the magnetron without the metallic gasket plate which is packed with each
F22
magnetron to prevent microwave leakage. Whenever repair work is carried out on magnetron,
check the microwave leakage. It shall not exceed 4mW/cm2 for a fully assembled oven with door
normally closed.
FIG. 5
High voltage circuit wiring
H.V. Capacitor
Magnetron
Metallic
gasket
plate
Magnetron
antenna
Wave guide
H.V. Diode
Cooling fin
H.V. Fuse
H.V. Trans
22
Magnetron
Metallic gasket plate
Filament
terminal
23
Magnetron antenna
6. To remove parts of control panel assembly (Refer to Fig. 7,8)
1) Remove a screw holding control panel assembly to the oven front plate.
At the same time, draw forward the control panel assembly from oven
front plate.
2) Pull forward the knob volume B11 to take out B11 B12 B13 simultaneouly
3) Remove three screws B9 which secure the PCB main assembly B7 to
control panel B1 .
4) Remove six screws B9 which secure the PCB sub assembly B6 to control
panel B1 .
5) Remove button function B5 , button function B4 , window display B3 ,
decorator ring B2 , cover LED B14 from the control panel B1 .
6) Remove decorator knob B10 from control panel B1 .
FIG. 8
7. To remove door assembly (Refer to Fig. 9)
F20
1) Remove two bolts F19 and two nuts F20 which secure to hinge.
2) Remove door assembly A00 .
3) Remove door above for reassembly taking case to replace fixing glue.
A00
8. To remove door parts (Refer to Fig. 10)
FIG. 7
1) Remove the frame door A9 and barrier-screen
2) Remove the absorber microwave A7 .
3) Pull the two fixture hook A5 .
4) Remove the spring hook A6 .
5) Remove two hooks A3 , and lever hook A4 .
A8
F19
.
FIG.9
CONTROL PANEL AS : PKCPSWPV00
CONTROL PANEL AS :
(for Germany)
7) Reverse PART
the above
steps forPART
reassembly.
REF.NO.
CODE
NAME
B1
3516714000
CONTROL-PANEL
B2
3511602000
DECORATOR RING
3511602010
DECORATOR RING
B3
3515500700
WINDOW DISPLAY
B4
3516904500
BUTTON FUNCTION
B5
3516904510
BUTTON FUNCTION
B6
PKBPMSPV00
PCB SUB AS
PCB SUB AS
B7
PKMPMSPV00
PCB MAIN AS
PCB MAIN AS
B8
3513002000
HOLDER VFD
B9
7621301011
SCREW TAPPING
B10
3511601300
DECORATOR KNOB
3511601310
DECORATOR KNOB
B11
3513402000
KNOB VOLUME
B12
3516902800
BUTTON START *I
B13
3516902900
BUTTON START *0
B14
3511403900
COVER LED
DESCRIPTION
Q’TY
ABS
1
ABS
1
ABS
1
PMMA
1
ABS
1
ABS
1
KOG-846T ØS
1
KOG-846T
1
KOG-846T ØS
1
KOG-846T
1
PP
1
T2 PAN 3X10 PW MFZN
9
ABS
1
ABS
1
ABS
1
ABS
1
ABS
1
SAN
1
24
REMARK
FIG.10
GOLD COLOR
DOOR AS : 3511704420
SMOG
For Germany
MAIN
For Germany
GOLD COLOR
REF.NO.
A1
A2
A3
A4
A5
A6
A7
A8
A9
PART CODE
3511704600
3517001800
3513100600
4413A44001
4413A40052
441G448071
3510100300
3517003600
3512203000
PART NAME
DOOR PAINTING AS
BARRIER-SCREEN *I
HOOK
LEVER HOOK AS
FIXTURE HOOK
SPRING HOOK
ABSORBER MICROWAVE
BARRIER-SCREEN *O
FRAME DOOR
MILKY
25
DESCRIPTION
Q’TY
KOG-840KS
1
TEMPERED GLASS 3.2T 1
POM
2
KOR-640
1
SWRM3 Ø5.5XL12.5
2
SWPA80
1
PAI+FERRITE
1
GLASS 3.0T
1
ABS
1
REMARK
9. Method to reduce the gap between the door seal and the oven front surface.
(1) To reduce gap located on part ‘A’.
1) Loosen a Hex Bolt on top door hinge, then push
the door to contact the door seal to oven front
surface.
2) Tighten a Hex Bolt.
A
10. To remove tray motor (Refer to Fig. 11)
D
Defrost
Combi Weighf Time
M/W
Grill
Lock
Auto
cook
Defrost
Waff
g
Autocook
Grill
A
Power
Combi
A
1) Cut the tray motor cover parts from the base
plate (Refer to Fig 11, 12).
2) Remove the tray motor cover.
3) Remove two screws F12 which secure the tray
motor F11 to tray motor bracket.
4) Remove the tray motor.
F11
Auto Cook Menu
Stop Clear
More
Less
Door hook
(under)
Interlock monitor
switch
Tim
Clock
(2) To reduce gap located on part ‘B’.
1) Loosen a Hex Bolt on bottom hingle, then push
the door to contact the door seal to oven front
surface.
B
C
2) Tighten a Hex Bolt.
(3) To reduce gap located on part ‘C’
1) Remove the cabinet.
2) Loosen a screw on interlock switch assembly located bottom of oven body.
3) Draw the interlock switch assembly inward as possible to engage with hook on the door bottom.
4) Tighten a screw.
(4) To reduce gap located on part ‘D’.
1) Remove the cabinet.
2) Loosen a screw on interlock switch assembly located top of oven body.
3) and (4) are same as step (3).
e ig h
e /W
t
Qua
nf
it y
Mounting screw (Top)
F12
FIG. 11
(Front)
(Bottom)
Slit
Door hook
(upper)
Nipper
Primary
interlock switch
Mounting screw
(bottom)
File
NOTE : Small gap may be acceptable if the microwave leakage does not exceed 1mW/cm2.
NOTE : The door on a microwave oven is designed to act as an electronic seal preventing the leakage of
microwave energy from the oven cavity during the cook cycle, This function does not require that the
door be air-tight, moisture (condensation) - tight or light-tight. Therefore, the occasional appearance of
moisture, light or the sensing of gentle warm air movement around the oven door is not abnormal and
do not of themselves, indicate a leakage of microwave energy from the oven cavity. If such were the
case, your oven could not be equipped with a vent, the very purpose of which is to exhaust the vaporladen air from the oven cavity.
26
FIG. 12
27
11. To remove grill heater assembly (Refer to Fig. 13)
1) Release three hex nuts F10 holding the Grill Heater Assembly
2) Remove Grill heater Assembly.
(TROUBLE 1) Oven does not operate at all; any inputs can not be accepted
F9
to top and side plate.
Condition
Fuse blows
F10
F9
Check
Result
Cause
Check continuity
of interlock monitor
switch with door closed
(COM ¡ŒNC)
(COM¡ŒNC)
Malfunction of
interlock monitor
switch
Replace
Check continuity
of both primary and
secondary interlock
switch with door closed
No
Continuity
Malfunction of
interlock switch
Replace
Shorted contacts
of primary
interlock switch
Replace
Defective low
voltage
transformer
Replace
Defective high
voltage
transformer
Replace
Check continuity of
primary interlock switch
contact with door partially
open until interlock
monitor switch contact
close (COM¡ŒNC close)
Continuity
(COM¡ŒNC)
Remedy
Note 1.
No
Continuity
Note 1.
Continuity
Continuity
Note 1.
FIG. 13
Check continuity of
primary winding of low
voltage transformer.
TROUBLE SHOOTING GUIDE
Approx.
150~210
(normal)
Following the procedure below to check if the oven is defective or not.
1.
2.
3.
4.
Check earthing before fault finding.
Be careful of the high voltage circuit.
Discharge the high voltage capacitor.
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.
0 Ω or infinite
Disconnect high
voltage fuse and operate
the unit.
Fuse again
blows
NOTE : When electric parts are checked or replaced, be sure the power cord is not inserted the wall outlet.
Check wire harness, wiring, and connection of the terminals, and power cord before check the parts
listed below.
28
29
Condition
Outlet has
proper voltage.
Fuse does
not blow
Check
Result
Check continuity
both magnetron and
heater thermostat
No
Continuity
check continuity of noise
filter board
No
Continuity
Check continuity
of power supply cord
Cause
Remedy
Defective
magnetron and
heater thermostat
Replace
Defective line
filter board
Replace
No
Continuity
Open power
supply cord
Normal
Defective touch
control circuit
(TROUBEL 3) No microwave oscillation even though fan motor rotates.
Condition
No microwave
oscillation
Replace
Replace
Check
Check continuity
of high voltage fuse
Result
Cause
Remedy
No
Continuity
Check continuity
of high voltage capacitor
terminals with wires
removed
Continuity
Defective high
voltage
transformer
Replace
Check continuity of high
voltage recitifier in
forword and backward
direction with DC megger
Continuity
in backward
direction
Defective high
voltage rectifier
Replace
Connect megger
leads to magnetron
terminal and magnetron
body
Continuity
Defective
magnetron
Replace
Check resistance of
primary and secondary
coil of high voltage
transformer
0 Ω or ∞
Defective high
voltage
transfromer
Replace
Check continuity
of magnetron heater
with wires removed
No
Continuity
Check continuity
of filament terminal
of high voltage
transformer
No
Continuity
NOTE 1 : All these switches must be replaced at the same time, please refer to page 18 and 19 for adjustment
instructions.
(TROUBEL 2) Heater does not heat (Food will not become hot).
Condition
Check
Result
Cause
Grill heater
does not heat
Check continuity
both primary
interlock switch
No
Continuity
Malfunction of
primary interlock
switch
Adjust or
replace
Check continuity
of heater
thermostat
No
Continuity
Defective heater
thermostat
Replace the
heater
thermostat
Check continuity
of secondary
interlock switch
No
Continuity
Malfunction of
secondary
interlock switch
Remedy
Adjust or
replace
Check continuity
of heater
No
continuity
Defective heater
Replace
Check D.C. voltage
being supplied to
RELAY (RY3) coil
0V
Defective touch
control circuit
Replace
Faulty contacts of
RELAY (RY3) or
open relay coil
Replace
Approx.
-16V DC
30
Check D.C. voltage being
supplied to RELAY(RY1)
coil
0V
Approx.
-16V DC
31
Defective
magnetron
Replace
Defective high
voltage
transfromer
Replace
Defective touch
control circuit
Replace
Faulty contacts of
RELAY(RY1) or
open relay coil
Replace
(TROUBLE 4) Display shows all figures selected, but oven does not start cooking, even
Condition
Check
Turn table motor,
fan motor and
oven lamp do not
turn on
Check continuity of
primary interlock switch
No
Continuity
Malfunction of
primary interlock
switch
Adjust or
replace
Check continuity of
secondary interlock and
D.O.M. switch
No
Continuity
Malfunction of
secondary
interlock and
D.O.M. switch
Adjust or
replace
Check D.C. voltage being
supplied to RELAY (RY2)
coil.
Result
Cause
Remedy
Check
Result
Cause
Display does not
show programming at all, even if
button key is
pressed
Check each button for
continuity of the tact
switch keyboard as the
following keyboard check
procedure.
Normal
Malfunction of
touch control
circuitry of control
box main-assembly
Abnormal
Malfunction of
touch control
circuitry of control
box sub-assembly
Remedy
Replace
control box
main
assembly
Replace control
box subassembly
NOTE : Before following the particular steps listed above in the trouble shooting guide for failure, please check for
the continuity of each wire-harness between the tact switch keyboard and PCB assembly.
Defective touch
control circuit
0V
Condition
Replace
KEYBOARD CHECK PROCEDURE
Faulty contacts of
RELAY (RY2) or
open relay coil
Approx.
-16 VDC
Replace
1. Type of encoding and key names
14
AUTO
COOK
(TROUBLE 5) The following visual conditions indicate a probable defective touch control
circuit.
1. Incomplete segments.
(A) Segments missing.
(B) Partial segments missing.
(C) Digit flickering other than normal fluorescent
slight flickering.
(D) “0:00” does not display when power is on.
2. A distinct change in the brightness of one or more
numbers is in the display.
3. One or more digits in the display are not on when
they should be.
4. Display indicates a number different from one
setted.(For example, when 5 setted, 3 appears in
the display.)
5. Specific numbers (for example 2 or 3) do not
display when the dial knob is rotated.
6. Display does not count down or up with time
cooking or clock operation.
7. oven is programmable and cooks normally but no
display shows.
8. Display obviously jumps in time while counting
down.
9. Display counts down noticeably too fast while
cooking.
10.Display can not shift from the first stage cooking to
the third stage cooking while 3 phase cooking
(including defrost).
11. Display does not show the time of day when clear
button is pressed.
12.Oven lamp, fan motor and turn table motor do not
stop although cooking is finished. Check if the
RELAY (RY2) contacts close if they are close,
replace touch control circuit.
15
GRILL/
COMBI
8
10
START
MORE
STOP/
CLEAR
CLOCK/
LESS
13
DEFROST/
POWER
12
CN101
FIG. 14 KEY MATRIX
The tact switch keyboard consists of 7 keys whose configurations are described above.
2. Key check procedure
M/W
Grill
Combi
Defrost
Weight
Time
To determine if the tact switch keyboard is defective or not, check the continuity of each button contacts with a
multimeter.
1) AUTO COOK button : Between 14 and 13
5) DEFROST/POWER button : Between 14 and 12
2) GRILL/COMBI button : Between 15 and 13
6) STOP/CLEAR button : Between 8 and 12
3) START button : Between 8 and 13
7) CLOCK/LESS button : Between 10 and 12
4) MORE button : Between 10 and 13
Lock
32
Auto
Cook
Watt
g
33
MEASUREMENT
1. Microwave Output Power
CAUTION :
1-1. Standard Method
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.
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 1,000¡ 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
190 mm.
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¡£
c (50¡ 3.6¡£
F).
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. (Fig. 15).
4) Microwave power is switched on.
5) Heating time should be exactly 47 seconds.
Heating time is measured while the microwave
generator is operating at full power.
The filament heat-up time magnetrons is not
included.
6) The initial and final water temperatures are selected
so that the maximum difference between the
ambient and final water temperatures is 5K.
7) The microwave power output P in watts is calculated
from the following formula:
P=4187 ¡¿∆T/t
1. Water load should be measured exactly to 1
litre.
2. Input power voltage should be exactly volts as
specified.
3. Ambient temperature should be 20¡ 2¡£
C
Door
Open
Closed
Primary Interlock Swtich
Secondary Interlock Switch
Interlock Monitor Circuit
∞
∞
0
0
∞
3-3. Procedures
1) Prepare 600cc glass or plastic container.
2) Pour 275 ¡ 15 millilitres of tap water initially at 68¡
9¡£
F(20¡ 5¡£
C) in the container.
3) Place it at the centre of the tray.
4) Operate oven.
5) measure the microwave leakage using an approved
microwave leakage meter after a few minutes of
operation.
When value obtained is not acceptable, the switch
should be replaced or adjusted again.
2-1. Procedure
NOTE : Remove the power plug from the wall
receptacle before testing.
1. Primary Interlock Switch
1) Disconnect two connectors from Primary Interlock
Switch.
2) Connect the ohmeter leads between the terminals of
the primary interlock switch.
3) Read the value of resistance between the terminals
of the switch, when the door is opened, and when
the door is closed.
2. Secondary Interlock Switch
1) Disconnect two connectors from secondary interlock
switch.
2) Connect the ohmeter leads between the terminals of
the secondary interlock switch.
3) Read the value of resistance between the terminals
of the switch, when the door is opened, and when
then oven door is closed.
3. Interlock Monitor Switch
1) Disconnect the lead wire connecting the primary
interlock switch and interlock monitor switch from
primary interlock switch terminal.
2) Connect the ohmeter leads between the lead wire
connector disconnected as item ‘1’ and the power
supply neutral plug pin.
3) Read the value of resistance between the lead wire
connector and the power supply neutral plug pin,
when the oven door is opened, and when the oven
door is closed.
Water Load
FIG.15
Fig.
14
34
NOTE :
3. Microwave Leakage Test
The scan rate should not exceed 1
inch/sec.
3-1. Warning
1) DO NOT place your hands into any suspected
microwave leakage field unless the safe density
level is known.
2) Always start measuring of an unknown field to
assure safety for operating personnel from
microwave energy.
3) Slowly approach the unit under test until the
radiometer reads an appreciable leakage from the
unit under test.
4) Care should be taken not to place the eyes in direct
line with the source of microwave energy.
Defrost
Combi Weighf Time
M/W
Grill
Lock
Auto
cook
Defrost
Waff
g
Autocook
Grill
A
Power
Combi
A
Auto Cook Menu
Stop Clear
More
Less
Clock
Tim
2. Electrical Continuity Check of Interlock
Switch
• ∆T is actual temeprature rise.
• T is the heating time.
The power measured should be 900W¡ 10 %.
Tray
2-2 Judgement
The value of resistance should be applied to the value
specified below.
3-2 Method
The power density of the microwave leakage emitted
by the microwave oven should not exceed 1mW/cm2 at
any point 50mm (2 in.) or more away from the external
surface of the oven as measured prior to acquisition by
a purchaser and thereafter once the oven is in use,
4mW/cm2 at any point 50mm(2 in.) or more away from
the external surface of the oven, checks to be made
around the whole of the door seal and on each of the
main unit surface.
Measurements should be made with the oven
operating at its maximum output and containing a load
of 275 ¡ 15 mililitres of tap water initially at 68¡ 9¡£
F
(20¡ 5¡£
C) placed within the cavity at the center of the
load carrying surface provided by the manufacture. The
water container should be a low from 600 milliliters
beaker having an inside diameter of approximately
85mm (3-11/32 in.) and made of an electrically
nonconductive material such as glass or plastic.
FIG. 16
35
e ig h
e /W
t
Qua
nf
it y
COMPONENT TEST PROCEDURE
WIRING DIAGRAM
1. High voltage is present at the high voltage terminal of the high voltage transformer during any cook cycle.
2. It is neither necessary not advisable to attempt measurement of the high voltage.
3. Before touching any oven components or wiring, always unplug the oven from its power source and discharge the
capacitor (see page 20).
1. High voltage transformer
3. High voltage diode
(A) Remove connections from the transformer
terminals and check continuity.
(B) Normal readings should be as follows:
Secondary winding…… Approx. 100Ω ¡ 10%
Filament winding…… Approx. 0Ω
Primary winding…… Approx. 0Ω
The high voltage diode is located on the base near the
transformer.
(A) Isolate the diode from the circuit by disconnecting
the leads.
(B) 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-to-back
resistance of the diode, otherwise an infinite resistance
may be read in both directions. A normal diodes
resistance will be infinite in one direction and several
hundred KΩ in the other direction.
Filament terminal
Primary
terminal
4. Magnetron
For complete magnetron diagnosis, refer to
“Measurement of the Microwave Output Power”.
Continuity checks can only indicate and open
filament or a shorted magnetron. To diagnose for
an open filament or shorted magnetron.
(A) Isolate magnetron from the circuit by disconnecting
the leads.
(B) A continuity check across magnetron filament
terminals should indicate one ohm or less.
(C) A continuity check between each filament terminal
and magnetron case should read open.
Secondary
terminal
2. High voltage capacitor
(A) Check continuity of capacitor with meter on the
highest OHM scale.
(B) A normal capacitor will show continuity for a short
time, and then indicate 9MΩ once the capacitor is
charged.
(C) A shorted capacitor will show continuous
continuity.
(D) An open capacitor will show constant 9MΩ.
(E) Resistance between each terminal and chassis
should be infinite.
Metallic
gasket
plate
Magnetron
antenna
Cooling fin
Magnetron
36
Filament
terminal
37
SCHEMATIC DIAGRAMS
IDLE
GRILL
M/W
COMBI
38
39
WIRING DIAGRAM(GERMANY ONLY)
SCHEMATIC DIAGRAMS (GERMANY ONLY)
IDLE
M/W
40
41
GRILL
ƒN SUB : Substitutive
REF NO.
PART CODE
PART NAME
DESCRIPTION
Q’TY
F2
3510103700
CAVITY WELD AS
KOG-8415 ØS
1
F5
3512504800
GUIDE WAVE
SA1D-80 0.5T
1
F6
3510602500
BRACKET MAGNETRON
SECC 1.2T
1
F7
3511401500
COVER WAVE GUIDE
MICA 0.35T
1
F8
7113400814
SCREW TAPPING
T1 BIN 4X8 MFNI
2
F9
3512800800
HEATER
1R07817 230V 1350W
1
F10
7S627W50X1
NUT HEX
FLANGE M5X0.8P MFZN
3
F11
3966030500
MOTOR SYNCRO
220/240V 4W GM-16-24FD16
1
F12
7121400811
SCREW TAPPING
T2S PAN 4X8 MFZN
2
F13
3517400200
COUPLER
TEFLON
1
F14
3510306100
BASE
SBHG-1 0.8T
1
F15
4415B04042
FOOT
P.P
4
F16
4415B04050
FIXTURE FOOT
P.P
4
F17
7112400811
SCREW TAPPING
T1 TRS 4X8 MFZN
7
F18
3515200700
STOPPER HINGE *U
SCP-1 3.2T
1
F19
7S517W50D1
SCREW SPECIAL
HEX 6B-1 5X16 SE MFZN
2
F20
7S627W50X1
NUT HEX
FLANGE M5X0.8P MFZN
2
F21
COMBI
3518103500
TRANS HV
DW-N90S0-84T
1
3518103510
TRANS HV
JY-N90S0-84T
1
F22
7S327W50B1
SCREW TAPPING
T2 FLANGE 5X12 MFZN
4
F23
3518002400
MAGNETRON
2M218J (MF) I
1
F24
7S312X4081
SCREW TAPPING
T1 TRS 4X8 SE MFZN
3
F25
3518903000
THERMOSTAT
NT-101 H038 140/125 #187
1
F26
7279300611
SCREW TAPPTITE
TT3 BRS 3X6 MFZN
2
F27
3513804700
LOCK
POM
1
F28
3513702100
LEVER SW MICRO
POM
1
F29
4415A17352
SW MICRO
VP-533A-0F SPNO #187
1
5S762S10G0
SW MICRO
V16-FA-63 SPNO #187
1
4415A66910
SW MICRO
VP-531A-0F
1
5S762310G0
SW MICRO
V16-FA-61 2C 3P
1
4415A17352
SW MICRO
VP-533A-0F SPNO #187
2
F30
F31
42
5S762S10G0
SW MICRO
V16-FA-63 SPNO #187
2
F32
3513700800
LEVER LOCK
POM
1
F33
7S342X40B1
SCREW SPECIAL
T2S TRS 4X12 SE MFZN
2
F34
3512505100
GUIDE AIR
P.P BLACK
1
F35
7112400811
SCREW TAPPING
T1 TRS 4X8 MFZN
1
F36
3513601600
LAMP
BL T-25 240V 25W C7A #187
1
F37
7121401211
SCREW TAPPING
T2S PAN 4X12 MFZN
1
F38
3512504900
GUIDE AIR OUTLET
SA1D-80 0.5T
1
44
REMARK
SUB
SUB
SUB
SUB
EXPLODED VIEW
43
PRINTED WIRING BOARD
ƒN SUB : Substitutive
NO.
PART CODE
PART NAME
DESCRIPTION
F39
7121400811
SCREW TAPPING
T2S PAN 4X8 MFZN
1
F40
3518902800
THERMOSTAT
130/120 H PW-2N
1
F41
7121400811
SCREW TAPPING
T2S PAN 4X8 MFZN
1
F42
3512505000
GUIDE WIND
P.P
1
F43
3963512910
MOTOR SHADED POLE
230V 25W MW15CA-K01
1
3963512900
Q’TY
OEM-15DWC2-A02
1) Low voltage transformer (DMR-9940F) check.
The low voltage transformer is located on the P.C.B. Measuring condition : Input voltage : 230V (240V)
Frequency : 50Hz
A
C
D
E

SUB
F44
7124402511
SCREW TAPPING
T2S RND 4X25 MFZN
2
F45
3511800100
FAN
P.P+G/F
1
F46
4416W67820
CAPACITOR H.V
2100V AC 1.1µF
1
F47
3513001000
HOLDER CAPACITOR
SECC 0.6T
1
F48
7S422X4081
SCREW SPECIAL
TT2 TRS 4X8 SE MFZN
1
F49
4416V24000
DIODE HV
HVR-1X-32B(D5.3)
1
F50
7S422X4081
SCREW SPECIAL
TT2 TRS 4X8 SE MFZN
1
F51
3518700210
FUSE HV
5KV 0.7A THV-060T
1
F52
3518602700
NOISE-FILTER
DWLF-L1
1
F53
4414A25100
FUSE
BUSSMANN MDA-15
1
F54
7621401211
SCREW TAPPING
T2S PAN 4X12 PW MFZN
2
F55
35113A5L25
CORD POWER AS
3X1.5 80X80 120-RTML
1
35113E5L25
REMARK
1. Circuit Check Procedure
3X1.5 80X80 120-RTML
H
B
2
F57
7S422X4081
SCREW SPECIAL
TT2 TRS 4X8 SE MFZN
1
NO.
CHECK POINT
F58
7650501611
BOLT HEX
6B-1 5X16 HS MFZN
2
1
PIN 21,24,32,33 OR 34
- 5VDC
F59
7S627W50X1
NUT HEX
FLANGE M5X0.8P MFZN
2
2
PIN 48
- 27VDC
F60
3511401400
COVER *B
SBHG-1 0.6T
1
F61
7S312X4081
SCREW TAPPING
T1 TRS 4X8 SE MFZN
1
3
PIN 44
F62
3510800800
CABINET
PCM 0.6T
1
F63
7S312X4081
SCREW TAPPING
T1 TRS 4X8 SE MFZN
4
F65
3517203500
TRAY
GLASS
1
F66
3512512500
GUIDE ROLLER AS
KOG-846T PPS
1
F67
7S341W40B1
SCREW SPECIAL
T2S PAN 4X12 PW SE MFZN
1
F68
4419J75030
RESISTOR S/A
20W 20ohm
1
-36VDC
G-H
2.6VAC
2.7VAC
Key check point (MICOM PIN)
TT2 TRS 4X8 SE MFZN
1
-34VDC
2) Voltage check
SCREW SPECIAL
KOG-8415 104MM
-24VDC
E-F
NOTE 2. : The acceptable tolerance of the secondary voltage is within ¡ 5% of norminal voltage
7S422X4081
TRAY RACK AS
NO LOAD
OPTION
F56
3517203201
LOAD
NOTE 1: Secondary side voltage of the low voltage transformer changes in proportion to fluctuation of power
source voltage.
U.K
F64
Voltage
-19VDC
Terminal
C-D
F
G
REMARK
5V
T: 20 ms (50 Hz)
0V
T
5V
0V
For Germany
4
PIN 18 OR 19
5
DP 1 PIN 1 & 25
T
T:: 238
ms
T
250 ms
2.6 VAC (DISPLAY FILAMENT VOLTAGE)
CHECK METHOD
F69
7S312X4081
SCREW TAPPING
T1 TRS 4X8 SE MFZN
1
For Germany
NO.
MEASURE POINT Fig. 17
WAVEFORM
REMARK
A00
3511704420
DOOR AS
KOG-843KS
1
SEE DETAIL P25
1
MP 1
-5V DC
REPLACE Q8, EC2
B00
PKCPSWPV00
CONTROL-PANEL AS
KOG-846T ØS
1
SEE DETAIL P24
2
MP 2
-16V DC
REPLACE Q12, EC5
* : FOR GERMANY USE ONLY
3
MP 3
-24V DC
REPLACE D12,D13
NOTE : Each measure point must be measured with GND points.
45
46
3) Display problems
NO.
1
2
3
CHECK METHOD
CAUSE
MEASUREMENT
Poor contact between
P.C.B and display
filament.
1. Check the voltage of PIN
1 & PIN 25.
The Display has some
troubles in its segment
or grid.
Refer to “The display
trouble shooting data”
below.
white spot
Loss of vacuum in the
display.
RESULT
REMEDY
2.6 VAC
Fix the PIN 1 & 25
on the P.C.B.
Replace P.C.B.
assembly.
White
spot is generated on
the display
STAGE
POINT
RELAY “2” ON
RELAY “2” OFF
A
B
+5VDC
GND
GND
-16VDC
(2) When pressing “
” button, oven lamp turns on.
Fan motor and turntable motor rotate and cook indicator in display comes on.
* Cause : RELAY “1” does not operate.
Replace P.C.B.
assembly.
R24
RY1
A
MICOM
Q5
RELAY "1"
B
R14
36
D6
Display trouble shooting data
R30
TROUBLE
DISPLAY NAME & PIN NO.
MICOM OUTPUT IN PIN NO.
TIME DEFROST, g do not come on
GRID 1 (G1), 21
WEIGHT DEFROST, WATT do not come on.
GRID 2 (G2), 17
3
COMBI does not come on.
GRID 3 (G3), 14
10
GRILL, AUTO COOK do not come on.
GRID 4 (G4), 10
11
M/W, LOCK do not come on.
GRID 5 (G5),4,7
12
SEGMENT, “a” does not come on from G1 to G5.
SEGMENT d, 19
1
SEGMENT, “b” does not come on from G1 to G5.
SEGMENT e, 18
2
SEGMENT, “c” does not come on from G1 to G5.
SEGMENT f, 16
4
SEGMENT, “d” does not come on from G1 to G5.
SEGMENT a, 23
9
SEGMENT, “e” does not come on from G1 to G5.
SEGMENT b, 22
8
SEGMENT, “f” does not come on from G1 to G5.
SEGMENT c, 20
6
SEGMENT, “g” does not come on from G1 to G5.
SEGMENT g, 15
5
DEFROST, COMBI, GRILL, M/W do not come on.
UPPER BAR l,5
63
LOCK,AUTO COOK, WATT, g do not come on.
LOWER BAR h,i,j,k,6,8,9,11
62
-16V
7
CHECK METHOD
STAGE
POINT
RELAY “1” ON
RELAY “1” OFF
A
B
+-5VDC
GND
GND
-16VDC
5) When there is not Grill heat.
When pressing “
” button, oven lamp turns on.
Fan motor and turntable and cook indicator in display comes on
* Cause : RELAY “3” does not operate.
R26
RY3
A
B
R16
38
4) When there is not microwave oscillation.
D8
(1) When pressing “
” button, oven lamp does not turn on.
Fan motor and turntable motor do not rotate, but cook indicator in display comes on.
* Cause : RELAY “2” does not operate.
R32
-16V
R25
RY2
RELAY "2"
MICOM
Q7
RELAY "3"
A
MICOM
Q6
B
CHECK METHOD
R15
37
D7
STAGE
POINT
RELAY “3” ON
RELAY “3” OFF
R31
-16V
49
A
B
+-5VDC
GND
GND
-16VDC
50
6) When the door is opened during operation, the count down timer does not stop.
1) Transistor(NPN Type)
A
D.O.M
C8
S/W
R10
BL
1
40
R11
BL
Q1 ~ Q12
2
EARTH
TERMINAL
B
-5V
3
-5V
CN1
MICOM
Emitter
CHECK METHOD
POINT
STAGE
1) DOOR OPENED
2) DOOR CLOSED
A
B
OPEN
CLOSED
-5VDC
GND
CHECK NO.
METHOD
Collector
REMEDY
Check the state (ON,OFF) of the secondary
Interlock switch by resistance measurement.
1
Base
Replace secondary
interlock switch
2) Diode and zener diode
7) When the digital clock does not oeprate properly.
C15
D15
C7
R1
R2
44
R9
A
4
D12
Cathode (K)
ANODE (A)
D1-15
ZENER DIODE
Cathode (K)
ANODE (A)
ZD1-6
B
-5V
D11
C
D13
5
DIODE
C9
Q2
MICOM
D10
POINT
WAVEFORM
A
B
C
+5V
0V
T: 20 ms (50Hz)
T
If clock does not keep exact time, you must check Diode D6, transistor Q2.
51
52
P.C.B. LOCATION NO
REF NO.
PART CODE
PART NAME
DESCRIPTION
REF NO.
PART CODE
PART NAME
DESCRIPTION
REMARK
R4,5,12,13
RD-4Z102J-
R CARBON FILM
1/4W 1KΩ J
REMARK
SW101~106
5S50101Z93
SWITCH
KPT-1115AM
PCB SUB
R28, 34, 41
RD-4Z102J-
R CARBON FILM
1/4W 1KΩ J
EC1,2
CEXE1H100A
C ELECTRO
RS 50V 10µF 5X11 PT
R27
RD-4Z101J-
R CARBON FILM
1/4W 100Ω J
EC3
CEXE1E101A
C ELECTRO
RS 25V 100µF 811.5
R35
RD-4Z103J-
R CARBON FILM
1/4W 10KΩ J
EC 4,5
CEXE1H221V
C ELECTRO
RSS 50V 220µF 10X16
R9,10
RD-4Z472J-
R CARBON FILM
1/4W 4.7KΩ J
EC6
CEXF1H102V
C ELECTRO
RSS 50V 1000µF 16X25
R1,11
RD-4Z104J-
R CARBON FILM
1/4W 100KΩ J
CN1
30166M503R
CONNECTOR
35312-0310
R37
RD-4Z202J-
R CARBON FILM
1/4W 2KΩ J
CN3
4CW215SBD0
CONNECTRO
HLEM15S-1
R42,43
RD-4Z150J-
R CARBON FILM
1/4W 15KΩ J
EN101
4CW215RBD0
CONNECTOR
HLEM15R-1
R30~33
RD-4Z510J-
R CARBON FILM
1/4W 51Ω J
CN4
3519150500
CONNECTOR
YW396-03AV
R3
RD-AZ105J-
R CARBON FILM
1/6W 1MΩ J
W01
WSJ-159007
WIRE FLAT
1.25X15X90XC
R6, 29
RD-AZ101J-
R CARBON FILM
1/6W 100Ω J
IC1
13GS846T00
IC MICOM
TMP47C862AN
R7
RD-AZ102J-
R CARBON FILM
1/6W 1KΩ J
CR1
5PCST400MG
RESONATOR
CST4.00MGW
R8,24~26
RD-AZ103J-
R CARBON FILM
1/6W 10KΩ J
BZ1
3515600100
BUZZER
BM-20K
R14~16,36
RD-AZ472J-
R CARBON FILM
1/6W 4.7KΩ J
R17
RD-AZ472J-
R CARBON FILM
1/6W 4.7Ω J
R38,39
RD-2Z689JS
R CARBON FILM
R40
RD-2Z471JS
R CARBON FILM
C1~4
CCZB1H102K
C5,6,8,9,11~15
CCZF1H104Z
PCB SUB
PCB SUB
RY1,2,3
5SC0101112
SW RELAY
G5J-1-TP-M-DT 12V
RY4
5SC0101112
SW RELAY
G5J-1-TP-M-DT 12V
1/2W 6.8Ω J
LVT
EPV041360
TRANS POWER
DMR-9940F
1/2W 470Ω J
L101
3513601200
LAMP PILOT
24V 40mA ROUND
PCB SUB
C CERA AXIAL
50V B 1000PF K AXIAL
SM101
5S10106002
SW ROTARY
PA-1005 1C 6P
PCB SUB
C CERA AXIAL
50V F0.1µF Z AXIAL
DP1
DSVM05SS13
DIGITRON
SVM-05SS13
for Germany
for Germany
C7
CCZF1H473Z
C CERA AXIAL
50V F 0.04µF Z AXIAL
BOARD
3514311950
PCB MAIN BOARD
M906-1
D1~4,15
DZN4148---
DIODE SWITCHING
1N4148 AUTO 52mm
BOARD
3514311960
PCB SUB BOARD
M907-1
D6~14
DZN4002A--
DIODE RECTIFIER
1N4002A
DPH
3513002000
HOLDER VFD
PP
D5
DZN4002A--
DIODE RECTIFIER
1N4002A
J1~8,10,14
85801052GY
JUMPER WIRE
1/0.52 TIM COATING
ZD1
DZTZ3R9B--
DIODE ZENER
MTZ3.9B
J16,18~20
85801052GY
JUMPER WIRE
1/0.52 TIM COATING
ZD2
DZT27D----
DIODE ZENER
MTZ-27Z D 0.5W
J101~103
85801052GY
JUMPER WIRE
1/0.52 TIM COATING
PCB SUB
ZD3,6
DZTZ4R7B--
DIODE ZENER
MTZ4.7B 26mm
J15
85801052GY
JUMPER WIRE
1/0.52 TIM COATING
for Germany
ZD4
DZTZ5R6B--
DIODE ZENER
UZ-5.6B
ZD5
DZTZ12C---
DIODE ZENER
NTZ12C
LD101
DSLR34VR--
LED
SLR-34VR
Q3,9,11
TDTA114ES-
TR DIGITAL
DTA114ES AUTO
Q1,2,5~8,10
TZTA1270Y-
TRANSISTOR
KTA1270Y 562Y
Q4
TZTA1270Y--
TRANSISTOR
KTA1270Y 562Y
Q12
TZTA1273Y-
TANSISTOR
KTA1273Y 966Y
54
for Germany
PCB SUB
for Germany
55
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) 364-5588/5305
TEX: 02) 360-7114/7315~7
S/M NO.:G846T0S001
PRINTED DATE: FEB.1996

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12

MICROWAVE/GRILL OVEN

KOG-846T

OPERATING

INSTRUCTIONS

Before operating this oven, please read

these instructions completely.

LessMore

Stop/Clear

Clock

Defrost Autocook

Power

Grill

Combi

Auto Cook Menu

1. Beverage

2. Soup

3. Casserole

4. vegetable I

5. vegetable II

6. Fish Fillets

7. Roast Beef

8. Roast Pork

9. Roast Chicken

T

i

m

e

/

W

e

i

g

h

t

Q

u

a

n

t

i

t

y

A

A

WattLock g

Auto

cook

Defrost

M/W Grill Combi Weight Time

Grill & Combi

cooking system

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Summary of Contents:

[Page 1] Daewoo KOG-846T

MICROWAVE/GRILL OVEN KOG-846T OPERATING INSTRUCTIONS Before operating this oven, please read these instructions completely. LessMore Stop/Clear Clock Defrost Autocook Power Grill Combi Auto Cook Menu 1. Beverage 2. Soup 3. Casserole 4. vegetable I 5…

[Page 2] Daewoo KOG-846T

CONTENTS INSTALLATION AND EARTHING INSTRUCTIONS 2 IMPORTANT SAFETY INSTRUCTIONS 3 WHICH UTENSIL CAN USED IN THE OVEN? 4 CONTROL PANEL 5 ACCESSORIES 6 HOW TO SET THE OVEN CONTROLS 7 PROGRAMMING COMBINATIONS (STAGE COOKING) 15 GENERAL GUIDELINES …

[Page 3] Daewoo KOG-846T

3 4 IMPORTANT SAFETY INSTRUCTONS When using electrical apliances, basic safety precautions should be followed, including the following: WARNING-To reduce the risk of burns, electric shock, fire, injury to persons or exposure to excessive microwave en…

[Page 4] Daewoo KOG-846T

5 6 CONTROL PANEL When blinking, the oven is operating in COMBI COOKING. When blinking, the oven is operating in GRILL. When blinking, the oven is operating in MICROWAVE mode. When blinking, the oven is operating in CHILD SAFETY LOCK mode. When blink…

[Page 5] Daewoo KOG-846T

The TIME DEFROST indicator light will light. 20:00 will show in the display. The TIME DEFROST indicator light will start blinking to show the oven is in TIME DEFROST mode. HOW TO SET THE OVEN CONTROLS 7 8 Tips: • Be sure to read the cookbook’s in…

[Page 6] Daewoo KOG-846T

9 10 The WEIGHT DEFROST indicator light will come on. The g indicator light will start blinking. The 1000 will show in the display This display represent 1000g. The WEIGHT DEFROST indicator light will starts blinking to show the oven is in WEIGHT DEF…

[Page 7] Daewoo KOG-846T

11 12 The GRILL indicator light will light. 25:00 will show in the display The GRILL indicator light will start blinking. SETTING THE CONTROL GRILL GRILL GRILL GRILL 1. Press GRILL button once. 2. Turn the DIAL KNOB for the desired cooking time. …

[Page 8] Daewoo KOG-846T

13 14 The AUTO COOK indicator light will light “AC-1” will show in the display. “AC-2” will show in the display. “3” will show in the display. SETTING THE CONTROL AUTO COOK AUTO COOK AUTO COOK AUTO COOK AUTO COOK 1. Press AUTO COOK b…

[Page 9] Daewoo KOG-846T

15 16 TO STOP THE OVEN WHILE IT IS OPERATING 1. Press (STOP/CLEAR) button. -Touch once more to erase all instruction except clock. -You can restart the oven by touching (START) button. 2. Open the door -You can restart the oven by closing the door…

[Page 10] Daewoo KOG-846T

GENERAL GUIDELINES 17 18 Since microwave cooking to some extent is different from traditional cooking, the following general guidelines should be considered whenever you use your microwave oven: If the food is undercooked Check if: • You have selec…

[Page 11] Daewoo KOG-846T

BEFORE CALLING FOR SERVICE 19 20 You can often correct operating problems yourself. If your microwave/grill oven fails to work properly, locate the operating problem in the chart below and try the solutions marked for each problems. If the microwave/…

[Page 12] Daewoo KOG-846T

21 12 DAEWOO ELECTRONICS SALES UK LIMITED YOUR PRODUCT GUARANTEE Dear Customer, Thank you for buying this Daewoo product. In the unlikely event of a failure all repair work will be carried out by your retailer or Daewoo approved service centre, for a…

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