Service Manuals, User Guides, Schematic Diagrams or docs for : Daewoo KOR KOR-631Q2A KOR-631Q2A
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S/M No. : R631Q2A001
Service Manual
Microwave Oven
Model: KOR-631Q2A
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 power to the microwave oven for any service test or inspection within the microwave gen-
erating compartments, check the magnetron, wave guide or transmission line, and cavity for proper align-
ment, 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 per-
formed on each oven prior to release to the owner.
TABLE OF CONTENTS
SAFETY AND PRECAUTIONS ...........................................................................................................................................2
FOR SAFE OPERATION ......................................................................................................................................2
FOR SAFE SERVICE PROCEDURES .................................................................................................................2
SPECIFICATIONS ...............................................................................................................................................................3
EXTERNAL VIEW................................................................................................................................................................4
OUTER DIMENSION.............................................................................................................................................4
FEATURE DIAGRAM ............................................................................................................................................5
CONTROL PANEL ................................................................................................................................................6
INSTALLATION ...................................................................................................................................................................7
OPERATIONS AND FUNCTIONS.......................................................................................................................................8
DISASSEMBLY AND ASSEMBLY......................................................................................................................................9
INTERLOCK MECHANISM AND ADJUSTMENT.............................................................................................................16
TROUBLE SHOOTING GUIDE .........................................................................................................................................17
MEASUREMENT AND TEST ............................................................................................................................................21
MEASUREMENT OF THE MICROWAVE POWER OUTPUT ............................................................................21
MICROWAVE RADIATION TEST .......................................................................................................................22
COMPONENT TEST PROCEDURE ...................................................................................................................23
WIRING DIAGRAM............................................................................................................................................................24
PRINTED CIRCUIT BOARD..............................................................................................................................................25
CIRCUIT CHECK PROCEDURE ........................................................................................................................25
PCB CIRCUIT DIAGRAM....................................................................................................................................28
P.C.B. LOCATION NO ........................................................................................................................................29
EXPLODED VIEW AND PARTS LIST...............................................................................................................................30
DOOR ASSEMBLY .............................................................................................................................................30
CONTROL PANEL ASSEMBLY..........................................................................................................................30
TOTAL ASSEMBLY.............................................................................................................................................30
1
SAFETY AND PRECAUTIONS
CAUTION
This device is to be Serviced only by Properly Qualified Service Personel. 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. FOR SAFE SERVICE PROCEDURES
1. If the oven is operative prior to servicing, a microwave emission check should be performed prior to servicing the
oven.
2. If any certified oven unit is found to servicing, a microwave emission check should be performed prior to servicing the
oven.
(a) inform the manufacturer, importer or assembler,
(b) repair the unit at no cost to the owner,
(c) attempt to ascertain the cause of the excessive leakage,
(d) tell the owner of the unit not to use the unit until the oven has been brought into compliance.
3. If the oven operates with the door open, the service person should tell the user not to operate the oven and contact
the manufacturer and CDRH immediately.
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
PASKETS MUST BE SECURE. NEVER OPERATE THE DEVICE WITHOUT A MICROWAVE ENERGY
ABSORBING LOAD ATTACHED. NEVER LOOK INTO AN OPEN SAVEGUIDE OR ANTENNA WHILE THE
DEVICE IS ENERGIZED.
2
SPECIFICATIONS
MODEL KOR-631Q2
POWER SUPPLY 120V~60Hz, SINGLE PHASE WITH GROUNDING
MICROWAVE 1350W
POWER
GRILL
CONSUMPTION
COMBINATION
MICROWAVE ENERGY OUTPUT 900W
MICROWAVE FREQUENCY 2450MHz
OUTSIDE DIMENSIONS (W X H X D) 465x279x360 mm (18.3x11.0x14.2 in)
CAVITY DIMENSIONS (W X H X D) 290x211x306 mm (11.4x8.3x12.0 in)
NET WEIGHT Approx. 12 kg (26.5 Ibs.)
TIMER 59 min. 99 sec.
FUNCTION SELECTIONS MICROWAVE
POWER SELECTIONS 10 LEVELS
CAVITY VOLUME 0.7 Cu. Ft.
* SPECIFICATIONS ARE SUBJECT TO CHANGE WITHOUT NOTICE.
3
EXTERNAL VIEW
1. OUTER DIMENSION
465 360
279/294
279
4
2. FEATURE DIAGRAM
1 4 6
2 7
10
3 9 5
8
11
1 DOOR SEAL
Door seal maintains the microwave within the oven cavity and prevents microwave leakage.
2 DOOR HOOK
When the door is closed, it will automatically lock shut. If door is opened while oven is operating, magnetron tube will
immediately stop operating.
3 DOOR SCREEN
Allows viewing of food. Microwave cannot pass through perforations in screen.
4 SPATTRSHIELD
Protects the microwave outlet from splashes of cooking foods.
5 OVEN LAMP
Automatically turns on during oven operating.
6 SAFETY INTERLOCK SYSTEM
7 CONTROL PANEL
8 GLASS COOKING TRAY
Made of special heat resistant glass. The tray must always be in proper position before operating. Do not cook food
directly on the tray.
9 OVEN FRONT PLATE
0 DOOR OPENING BUTTON
To open the door push the door opening button. When door is closed, it will automatically lock shut. If door is opened
while oven is operating, magnetron tube will immediately stop operating.
q ROLLER GUIDE
Supports the glass cooling tray.
5
3. CONTROL PANEL
STAGE DEF. AUTO
1 2 WEIGHT TIME START
1
LOCK NO CUP oz lb
MCD790W
BAKED
POTATO
DINNER
PLATE 2
FRESH FROZEN
VEGETABLE PIZZA
POPCORN BEVERAGE
1 2 3
3
SPEEDY
COOK
4 5 6
4
5 AUTO
DEF.
7 8 9
6 0
POWER
CLOCK
AUTO START 7
8 STOP
CLEAR
START 9
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