Service Manuals, User Guides, Schematic Diagrams or docs for : Daewoo KOG KOG-37BG0S & 39BG0S KOG-37BG0S & 39BG0S
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Service Manual
Service Manual
Microwave Oven
Model : KOG-37BG0S
KOG-39BG0S
DAEWOO ELECTRONICS CO., LTD.
OVERSEAS SERVICE DEPT
DAEWOO ELECTRONICS CO., LTD
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
micro-wave 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
com-partments, 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 ............................................................................................................................................................3
1. OUTER DIMENSION................................................................................................................................................3
2. FEATURE DIAGRAM ...............................................................................................................................................4
3. CONTROL PANEL ...................................................................................................................................................5
INSTALLATION................................................................................................................................................................6
OPERATION AND FUNCTIONS .....................................................................................................................................7
DISASSEMBLY AND ASSEMBLY..................................................................................................................................8
INTERLOCK MECHANISM AND ADJUSTMENT ........................................................................................................17
TROUBLE SHOOTING GUIDE......................................................................................................................................18
MEASUREMENT AND TEST ........................................................................................................................................22
1. MEASUREMENT OF THE MICROWAVE POWER OUTPUT..............................................................................22
2. MICROWAVE RADIATION TEST..........................................................................................................................23
3. COMPONENT TEST PROCEDURE .....................................................................................................................24
WIRING DIAGRAM ........................................................................................................................................................25
PRINTED CIRCUIT BOARD ..........................................................................................................................................26
1. CIRCUIT CHECK PROCEDURE...........................................................................................................................26
2. PCB CIRCUIT DIAGRAM.......................................................................................................................................29
3. P.C.B. LOCATION NO ...........................................................................................................................................30
EXPLODED VIEW AND PARTS LIST...........................................................................................................................32
1. DOOR ASSEMBLY ................................................................................................................................................32
2. CONTROL PANEL ASSEMBLY ............................................................................................................................32
3. TOTAL ASSEMBLY................................................................................................................................................32
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 cavity surface should be kept clean.
No grease, soil or spatter should be allowed to build up on these surfaces or inside the oven.
DO NOT ATTEMPT TO OPERATE THIS APPLIANCE WITH THE DOOR OPEN. The microwave oven has
concealed switches to make sure the power is turned off when the door is opened. Do not attempt to defeat them.
DO NOT ATTEMPT TO SERVICE THIS APPLIANCE UNTIL YOU HAVE READ THIS SERVICE MANUAL.
2.FOR SAFE SERVICE PROCEDURES.
1) If the oven is operative prior to servicing, a microwave emission check should be performed prior to servicing the
oven.
2) If any certified oven unit is found to servicing, a microwave emission check should be performed prior to servicing the
oven.
(a) inform the manufacturer, importer or assembler,
(b) repair the unit at no cost to the owner,
(c) attempt to ascertain the cause of the excessive leakage,
(d) tell the owner of the unit not to use the unit until the oven has been brought into compliance.
3) If the oven operates with the door open, the service person should tell the user not to operate the oven and contact
the manufacturer immediately.
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 the 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 to the terminal which is marked with the letter `L'
or coloured red.
NOTE : This oven is designed for counter-top use only.
2
SPECIFICATIONS
MODEL KOG-37BG KOG-39BG
POWER SUPPLY 230V-50Hz, SINGLE PHASE WITH EARTHING
POWER MICROWAVE 1200W 1350W
CONSUMPTION GRILL 1050W 1050W
COMBINATION 2200W 2350W
MICROWAVE ENERGY OUTPUT 800W 900W
MICROWAVE FREQUENCY 2450MHz
OUTSIDE DIMENSIONS (W X H X D) 465x279x356mm (18.3x11.0x14.0 in.) 495x294x384mm (19.5x11.6x15.1 in.)
CAVITY DIMENSIONS (W X H X D) 290x220x306mm (11.4x8.7x12.0 in.) 320x244x338mm (12.6x9.6x13.3 in.)
NET WEIGHT APPROX. 13.7Kg (30.2 lbs.) APPROX. 15.8Kg (34.9 lbs)
TIMER 59 min. 90 sec.
FUNCTION SELECTIONS MICROWAVE
POWER SELECTIONS 10 LEVELS
CAVITY VOLUME 0.7 Cu.Ft. 0.9 Cu.Ft.
* SPECIFICATIONS SUBJECT TO CHANGE WITHOUT NOTICE.
EXTERNAL VIEWS
1. OUTER DIMENSION
465/495 356/384
279/294
3
2. FEATURE DIAGRAM
1 2 3 4 5
6
7
w q 0 9 8
1. Door seal - Door seal maintains the microwave energy 9. Roller guide - This must always be used for cooking
within the oven cavity and prevents microwave together with the glass cooking tray.
leakage.
10. Glass cooking tray - Made of special heat resistant
2. Reflector (Insulator Heater) gkass. Food in a proper receptacle is placed on this
tray for cooking.
3. Heating Element
11. Door viewing screen - Allows viewing of food. The
4. Oven cavity
screen is designed so that light can pass through, but
5. Safety interlock system not the microwave.
6. Door release button - By pushing this button the latch 12. Door hook - When the door is closed, it will
system cut off all circuits and stops the oven before automatically shut off. If the door is opened while the
the door is opened. oven is operating, the magnetron will immediately stop
operating.
7. Metal Rack
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.
4
3. FEATURES DIAGRAM (CONTINUED)
r
M/W Def. Grill Combi Timer/g
1. BREAD
2. SOUP
3. BAKED POTATO
4. FRESH VEGETABLE
Auto
Cook y
5. FROZEN VEGETABLE
t
Pasta
Beverage Frozen Pizza
u i
Auto Defrost
o
Fish Poultry Meat
p a
COMBI GRILL Defrost
s d
Power Kitchen Clock
Timer
f r
g
u in in
1ho 10m 1m
10m 1m 10s e
h STOP/
CLEAR
START/
SPEEDY COOK
j
13. Time set pad - Used to set the cooking time and the 21. Grill -Used to cook GRILL.
present time.
22. Power - Used to set power level.
14. Display - Cooking time, power level, indicators and
23. Defrost - Used to defrost foods. (for time)
present time are displayed.
24. Kitchen Timer - Used as a minute timer, to deelay
15. One touch - Used to cook or reheat specific
the start of cooking, or to set a holding time after
quantities of food.
cooking.
16. Auto Cook - Used to cook or reheat.
25. Clock - Used to set clock.
17. More - Used to add time to cooking.
26. Stop/Clear - Used to stop the oven operation or to
18. Less - Used to remove time from cooking. delete the cooking data.
19. Auto Defrost - Used to defrost foods. (for weight) 27. Start/Speedy cook - Used to start the oven and also
used to set a reheat time.
20. Combi - used to cook COMBI.
5
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 shouls be kept a clearance. If all vents are covered during operation, the oven may overheat and,
eventually, cause 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 possinle.
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
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