Service Manuals, User Guides, Schematic Diagrams or docs for : Daewoo KOR KOR-631G1A & 631H1A & 861G1A & 861H1A KOR-631G1A & 631H1A & 861G1A & 861H1A
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S/M No. : R631G1A001
Service Manual
Microwave Oven
Model: KOR-631G1A
KOR-631H1A
KOR-861G1A
KOR-861H1A
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 w ith the door open.
(b) M ake the following safety checks on all ovens to be serviced before activating the m agnetron or other m icrowave
source, and m ake repairs as necessary: (1) Interlock operation, (2) Proper door closing, (3) Seal and sealing
surfaces (arcing, wear, and other dam age), (4) Dam age to or loosening of hinges and latches, (5) Evidence of
dropping or abuse.
(c) B efore turning on power to the m icrow ave oven for any service test or inspection within the m icrowave
generating com partm ents, check the m agnetron, wave guide or transm ission line, and cavity for proper
alignm ent, integrity, and connections.
(d) Any defective or m isadjusted com ponents in the interlock, m onitor, door seal, and m icrowave generation and
transm ission system s shall be repaired, replaced, or adjusted by procedures described in this m anual before the
oven is released to the owner.
(e) A m icrowave leakage check to verify com pliance with the Federal perform ance standard should be perform ed on
each oven prior to release to the owner.
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 ................................................................................................................................... 8
OPERATIONS AND FUNCTIONS....................................................................................................... 9
DISASSEMBLY AND ASSEMBLY...................................................................................................... 10
INTERLOCK MECHANISM AND ADJUSTMENT............................................................................... 17
TROUBLE SHOOTING GUIDE ........................................................................................................... 18
MEASUREMENT AND TEST .............................................................................................................. 22
MEASUREMENT OF THE MICROWAVE POWER OUTPUT ......................................................................... 22
MICROWAVE RADIATION TEST.................................................................................................................... 23
COMPONENT TEST PROCEDURE................................................................................................................ 24
WIRING DIAGRAM.............................................................................................................................. 25
PRINTED CIRCUIT BOARD................................................................................................................ 26
CIRCUIT CHECK PROCEDURE ..................................................................................................................... 26
P.C.B. CIRCUIT DIAGRAM ............................................................................................................................. 29
P.C.B. LOCATION NO ..................................................................................................................................... 30
EXPLODED VIEW AND PARTS LIST................................................................................................. 32
DOOR ASSEMBLY .......................................................................................................................................... 32
CONTROL PANEL ASSEMBLY ...................................................................................................................... 32
TOTAL ASSEMBLY ......................................................................................................................................... 32
SAFETY AND PRECAUTIONS
CAUTION
This D evice is to be S erviced O nly by P roperly Q ualified S ervice P ersonnel. C onsult the S ervice M anual for
Proper S ervice P rocedures to A ssure C ontinued S afety Operation and for Precautions to be Taken to Avoid Possible
Exposure to E xcessive M icrow ave E nergy.
1. FOR SAFE OPERATION
Dam age that allows the m icrowave energy ((that cooks or heats the food) to escape will result in poor cooking and m ay
cause serious bodily injury to the operator.
IF ANY OF THE FOLLOW ING CONDITIONS EXIST, OPERATOR M UST NOT USE THE APPLIANCE.
(Only a trained service personnel should m ake 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 ATTEM PT TO OPERATE THIS APPLIANCE W ITH THE DOOR OPEN. The m icrowave oven has concealed
switches to m ake sure the power is turned off when the door is opened. Do not attem pt to defeat them .
DO NOT ATTEM PT TO SERVICE THIS APPLIANCE UNTIL YOU HAVE READ THIS SERVICE M ANUAL.
2. FOR SAFE SERVICE PROCEDURES
1) If the oven is operative prior to servicing, a m icrowave em ission check should be performed prior to servicing the oven.
2) If any certified oven unit is found to servicing, a m icrowave em ission check should be perform ed prior to servicing
the oven.
(a) inform the m anufacturer, im porter or assem bler,
(b) repair the unit at no cost to the owner,
(c) attem pt 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 com pliance.
3) If the oven operates with the door open, the service person should tell the user not to operate the oven and contact
the m anufacturer and CDRH im m ediately.
CAUTION
M ICROWAVE RADIATION
PERSONNEL SHOULD NOT BE EXPOSED TO THE M ICROWAVE ENERGY W HICH M AY RADIATE FROM THE
M AGNETRON OR OTHER M ICROWAVE GENERATING DEVICE IF IT IS IM PROPERLY USED OR CONNECTED.
ALL INPUT AND OUTPUT M ICROWAVE CONNECTIONS. WAVEGUIDE FLANGES AND GASKETS M UST BE
SECURE. NEVER OPERATE THE DEVICE W ITHOUT A M ICROWAVE ENERGY ABSORBING LOAD ATTACHED.
NEVER LOOK INTO AN OPEN WAVEGUIDE OR ANTENNA W HILE THE DEVICE IS ENERGIZED.
SPECIFICATIONS
M O D EL K O R -631G /H 1A KO R -861G /H 1A
PO W E R SU P PLY 120V -60H z, SIN G LE PH AS E W ITH G R O U N D IN G
M IC R O W AVE 1200W 1350W
PO W E R
C O N SU M PTIO N G R ILL
C O M BIN ATIO N
M IC R O W AVE E N E R G Y O U TP U T 800W 900W
M IC R O W AVE F R E Q U E N C Y 2450M H z
O U T S ID E D IM EN SIO N S (W X H X D ) 465 x 279 x 360m m (18.3 x 11.0 x 14.2 in.) 495 x 294 x 388m m (19.5 x 11.6 x 15.3 in.)
C AV IT Y D IM E N S IO N S (W X H X D ) 290 x 211x 306 m m (11.4 x 8.3 x 12.0 in.) 320 x 228 x 338m m (12.6 x 9.0 x 13.3 in.)
N E T W E IG H T A PP R O X . 12Kg ( 26.5lbs.) AP PR O X. 14Kg ( 30.9lbs.)
TIM ER 59 m in. 99 sec.
FU N C T IO N S ELE C T IO N S M IC R O W AV E
PO W E R SE LE C T IO N S 10 LE VE LS
C AV IT Y VO LU M E 0.7 C u.Ft. 0.9 C u.Ft.
SPECIFICATIONS ARE SUBJECT TO CHANGE W ITHOUT NOTICE.
EXTERNAL VIEW
1. OUTER DIMENSION (KOR-631G/H1A, 861G/H1A)
465/495 360/388
279/294
279/294
EXTERNAL VIEW
2. FEATURE DIAGRAM
1. DOOR SEAL
Door seal m aintains the m icrowave within the oven cavity and prevents m icrowave leakage.
2. DOOR HOOK
W hen door is closed, it will autom atically lock shut. If door is opened while oven is operating, m agnetron tube will
im m ediately stop operating.
3. DOOR SCREEN
Allows viewing of food. M icrowave cannot pass through perforations in screen.
4. SPATTER SHIELD
Protects the m icrowave outlet from splashes of cooking foods.
5. OVEN LAMP
Autom atically turns on during oven operating.
6. SAFETY INTERLOCK SYSTEM
7. CONTROL PANEL
8. GLASS COOKING TRAY
M ade of special heat resistant glass. The tray m ust always be in proper position before operating. Do not cook food
directly on the tray.
9. OVEN FRONT PLATE
10. DOOR OPENING BUTTON
To open the door, push the door opening button. W hen door is closed, it will autom atically lock shut. If door is opened
while oven is operating, m agnetron tube will im m ediately stop operating.
11. ROLLER GUIDE
Supports the glass cooking tray.
EXTERNAL VIEW
3. CONTROL PANEL
1) KOR-631G1A/861G1A
1. Time set pad - Used to set the cooking tim e and the present tim e.
2. Display - Cooking tim e, power level, indicators and present tim e are displayed.
3. One touch - Used to cook or reheat specific quantities of food.
4. Auto cook - Used to cook or reheat.
5. More - Used to add tim e to cooking.
6. Less - Used to rem ove tim e from cooking.
7. Auto Defrost - Used to defrost foods.(for weight)
8. Power - Used to set power level.
9. Defrost - Used to defrost foods.(for tim e)
10. Kitchen Tim er - Used as a m inute tim er, delay cooking, hold setting after cooking.
11. Clock - Used to set clock.
12. Stop/Clear - Used to stop the oven operation or to delete the cooking data.
13. Start/Speedy cook - Used to start the oven and also used to set a reheat tim e.
EXTERNAL VIEW
2) KOR-631H1A/861H1A
1. Time set pad - Used to set the cooking tim e and the present tim e.
2. Display - Cooking tim e, power level, indicators and present tim e are displayed.
3. One touch - Used to cook or reheat specific quantities of food.
4. More - Used to add tim e to cooking.
5. Less - Used to rem ove tim e from cooking.
6. Auto Defrost - Used to defrost foods.(for weight)
7. Power - Used to set power level.
8. Defrost - Used to defrost foods.(for tim e)
9. Kitchen Timer - Used as a m inute tim er, delay cooking, hold setting after cooking.
10. Clock - Used to set clock.
11. Stop/Clear - Used to stop the oven operation or to delete the cooking data.
12. Start/Speedy cook - Used to start the oven and also used to set a reheat tim e.
INSTALLATION
1. Steady, flat location
This m icrowave oven should be set on a steady, flat surface.
2. Leave space behind and side
All air vents should be kept a clearance. If all vents are covered during operation, the oven may overheat and, eventually,
cause oven failure.
3. Away from radio and TV sets
Poor television reception and radio interference m ay result if the oven is located close to a TV, radio, antenna or feeder
and so on.
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 m ight be adversely
affected and breakdowns occur.
5. Power supply
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