Daewoo KOG-846T Service Manual

Service Manual

Microwave Oven

KOG-846T

DAEWOO ELECTRONICS CO., L TD.

M/W

Lock Auto

cook

Grill CombiWeighf

Defrost

Time

Waff g

Defrost Autocook Grill

Power

More Less

Stop Clear

Clock

Combi

Auto Cook Menu

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.

1. For Safe Operation

Damage that allows the microwave energy (that cooks or heats the food) to escape will result in poor cooking and may cause serious bodily injury to the operator. IF ANY OF THE FOLLOWING CONDITIONS EXIST, OPERATOR MUST NOT USE THE APPLIANCE. (Only a trained service personnel should make repairs.)

1) A broken door hinge.

2) A broken door viewing screen.

3) A broken front panel, oven cavity.

4) A loosened door lock.

5) A broken door lock. The door gasket plate and oven cavity surface should be kept clean. No grease, soil or spatter should be allowed to build up on these surfaces or inside the oven. DO NOT ATTEMPT TO OPERATE THIS APPLIANCE WITH THE DOOR OPEN. The microwave oven has concealed switches to make sure the power is turned off when the door is opened. Do not attempt to defeat them. DO NOT ATTEMPT TO SERVICE THIS APPLIANCE UNTIL YOU HAVE READ THIS SERVICE MANUAL.

2. 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.

2 3

PRECAUTIONS TO BE OBSERVED BEFORE AND DURING SERVICING TO A VOID POSSIBLE EXPOSURE TO EXCESSIVE MICROW AVE 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 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.

TABLE OF CONTENTS

PROPER USE AND SERVICE PRECAUTIONS 3

SPECIFICATIONS 5 NAMES AND FUNCTION OF PARTS 6 CONTROL PANEL 7 HOW TO SET THE OVEN CONTROLS 9 PROGRAMMING COMBINATIONS 17 INTERLOCK MECHANISM FUNCTIONS AND ADJUSTMENTS 18 PRECAUTIONS FOR DISASSEMBLY AND REPAIR 20 DISASSEMBLY AND ASSEMBLY 21 TROUBLE SHOOTING GUIDE 28 MEASUREMENT 34 COMPONENT TEST PROCEDURE 36 WIRING DIAGRAM 37 SCHEMATIC DIAGRAM 38 WIRING DIAGRAM(GERMANY) 40 SCHEMATIC DIAGRAM(GERMANY) 41 EXPLODED VIEWS AND PARTS LIST 43 PRINTED WIRING BOARD 46 P.C.B. CIRCUIT DIAGRAM 53 P.C.B. LOCATION NO 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

SPECIFICA TIONS

EXTERNAL VIEWS

Power Supply 230V~, 50Hz 240V~, 50Hz(U.K)

Power Consumption 1450 W 1500W

Microwave 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.

M/W

Lock Auto

cook

Grill CombiWeighf

Defrost

Time

Waff g

Defrost Autocook Grill

Power

More Less

Stop Clear

Clock

Combi

Auto Cook Menu

348

236 389

294

319

501

FIG.1 FRONT VIEW FIG. 2 SIDE VIEW

4 5

IMPORTANT

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.

NOTE : This oven is designed for counter-top use only.

6 7

NAMES AND FUNCTION OF P AR TS CONTROL P ANEL

1 9 8

4 5 6

M/W

Lock Auto

cook

Grill CombiWeighf

Defrost

Time

Waff g

Defrost Autocook Grill

Power

More Less

Stop Clear

Clock

Combi

Auto Cook Menu

¤ DOOR SEAL

Door seal maintains the microwave within the oven cavity and prevents microwave leakage.

¤ŁDOOR HOOK

When door is closed, it will autoamtically lock shut. If door is opened while oven is operating, magnetron tube will immediately stop operating.

¤ØDOOR SCREEN

Allows viewing of food. Microwave cannot pass through perforations in screen.

¤ŒGRILL HEATER

Turns on when grill and simultaneous cooking is selected.

¤ºOVEN LAMP

Automatically turns on during oven operating.

¤ SAFETY INTERLOCK SYSTEM

¤ CONTROL PANEL ¤ GLASS TURN -TABLE TRAY

Rotates during cooking and ensure even distribution of Microwaves. It can also be used as a cooking utensil.

¤ 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.

¤æCOUPLER

This fits over the shaft in the center of the oven’s cavity floor. This is to remain in the oven for all cooking.

8 9

HOW TO SET THE OVEN CONTROLS

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.

CLOCK

SETTING THE CONTROL

TO STOP THE OVEN WHILE THE OVEN IS OPERATING

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.

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 button during operation, the cooking instruction is all erased.

OPERA TION

NOTE : Ovne stops operating when door is opened.

NOTE : ¡ 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.

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.

2. Turn left the DIAL KNOB for hour you want.

3. Turn right the DIAL KNOB for minute you want

This example is 24 hour clock system.

NOTE : If you are not setting current time for 3 seconds, display return to old time.

NOTE : This oven is multiple

clock system.

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.

WEIGHT DEFROST

SETTING THE CONTROL

1110

1. Press CLOCK button.

TIME DEFROST

SETTING THE CONTROL

1. Press DEFROST button twice.

2. Turn the DIAL KNOB for the desired defrosting time.

For example : 20 minutes.

3. Press button.

The display will show present time, and the colon starts blinking. This digital clock allows you to set to “10:10”

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.

NOTE : Time can be set up to

99 minutes.

NOTE : During the defrosting operation, turn over after buzzer sound for completed defrosting.

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.

NOTE : During the defrosting operation, turn over the food after buzzer sound for completed defrosting.

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.

1. Press DEFROST button once.

2. Turn the DIAL KNOB for the desired defrosting weight For example : 1000g

3. Press button

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 in WEIGHT 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.

TIME

WEIGHT

1312

1. Press POWER button more than three times By repeatedly pressing this button, you can also select other power levels. For example : 900 WATT

2. Turn the DIAL KNOB for the desired cooking time. For example : 10 minutes

3. Press button

The W/W indicator light will light The WATT indicator light start blinking.

10:00 will show in the display.

The M/W indicator light will start blinking to show the oven is in the micorwave 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.

MICROWAVE

SETTING THE CONTROL

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

1. Press GRILL button once.

2. Turn the DIAL KNOB for the desired cooking time. For example : 25 minutes.

3. Press button

The GRILL indicator light will light.

25:00 will show in the display.

The GRILL indicator light will start blinking

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.

GRILL

SETTING THE CONTROL

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.

NOTE : Time can be set up to

60 minutes.

M/W

Watt

M/W

GRILL

1514

1. Press COMBI button once again.

2. Turn the DIAL KNOB for the desired cooking time. For example : 10 minutes.

3. Press button

The corresponding COMBI indicators will light on the display.

10 : 00 will show in the display

The COMBI indicator light will start blinking

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.

TO SET COMBI COOKING

SETTING THE CONTROL

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 : Time can be set up to

99 minutes.

NOTE :

DISPLAY POWER LEVEL

: 0 500W : H 600W : L 400W

1. Press AUTO COOK button.

2. Select the desired cooking. For example : SOUP Press AUTO COOK button twice.

4. Turn the DIAL KNOB for desired cooking quantity.

5. Select the desired cooking quantity. For example : 3(600g)

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.

3. If you want to select other menu, press AUTO COOK button until display your desired cooking menu.

AUTO COOK

NOTE : • There is programmed for cooking of nine kinds (1~9).

• You don’t have to worry about setting time, power and function.

COMBI

AUTO COOK

NOTE : ¥ AUTO COOK menu and quantity

PROGRAMMING COMBINA TIONS

8. Push button For example : MORE/LESS 0

The oven will now start auto cook for

menu 2.

The indicator light starts blinking.

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.

6. If you want to select other quantity, press quantity button once again until display you desired.

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.

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.

MENU NO. QUANTITY NO.

1 1 CUP

1 BEVERAGE 2 2 CUPS

3 3 CUPS 4 4 CUPS

1 200g 2 SOUP 2 400g 3 CASSEROLE 3 600g

4 800g

4 VEGETABLE I - 680g

5 VEGETABLE II - 450g

6 FISH FILLETS - 450g

MENU NO. QUANTITY NO.

1 700g 2 800g

3 900g 7 ROAST BEEF 4 1000g 8 ROAST PORK 5 1100g

6 1200g

7 1300g

1 700g

2 800g

3 900g 9 ROAST 4 1000g

CHICKEN 5 1100g

6 1200g

7 1300g

8 1400g

9 1500g

SPEEDY COOK

CHILD SAFETY LOCK

¡ 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.

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.

STAGE COMBINATIONS

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.

* When you set stage mode, indicator is lighted only setting. * When you press START button, all indicators of setted functions are lighted, and

STAGE COOKING

TIME / WEIGHT - DEFROST

MICROWAVE GRILL

GRILL MICROW AVE

AUTO COOK

+ 19 hidden pages

Daewoo KOG-846T Service Manual

Specifications and Main Features

Frequently Asked Questions

User Manual