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S/M No. : R63671S001
Service Manual
Microwave Oven
Model: KOR-63671S
KOR-86671S
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 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) 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 microwave generating compartments, check the magnetron, wave guide or transm ission line, and cavity for proper alignment, integrity, and connections.
(d)Any defective or misadjusted components in the interlock, m onitor, door seal, and microwave generation and transm ission systems shall be repaired, replaced, or adjusted by procedures described in this manual before the oven is released to the owner.
(e)A m icrowave leakage check to verify com pliance with the Federal performance standard should be perform ed on each oven prior to release to the owner.
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SAFETY AND PRECAUTIONS ........................................................................................................ |
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1. FOR SAFE OPERATION ............................................................................................................. |
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2. FOR SAFE SERVICE PROCEDURES ........................................................................................ |
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SPECIFICATIONS ............................................................................................................................ |
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EXTERNAL VIEW ............................................................................................................................ |
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1. OUTER DIMENSION(KOR-6315/KOR-8615) .............................................................................. |
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2. FEATURE DIAGRAM ................................................................................................................... |
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INSTALLATION ................................................................................................................................ |
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OPERATIONS AND FUNCTIONS ................................................................................................... |
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DISASSEMBLY AND ASSEMBLY .................................................................................................. |
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INTERLOCK MECHANISM AND ADJUSTMENT ........................................................................... |
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TROUBLE SHOOTING GUIDE ........................................................................................................ |
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MEASUREMENT AND TEST ........................................................................................................... |
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1. MEASUREMENT OF THE MICROWAVE POWER OUTPUT ..................................................... |
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2. MICROWAVE RADIATION TEST ................................................................................................ |
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3. COMPONENT TEST PROCEDURE ............................................................................................ |
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WIRING DIAGRAM .......................................................................................................................... |
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EXPLODED VIEW AND PARTS LIST ............................................................................................. |
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1. DOOR ASSEMBLY ...................................................................................................................... |
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2. CONTROL PANEL ASSEMBLY.................................................................................................... |
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3. TOTAL ASSEMBLY ...................................................................................................................... |
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SAFETY AND PRECAUTIONS
1. FOR SAFE OPERATION
D am age that allow s the m icrow ave 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 AN Y O F TH E FOLLO W IN G CO N D ITIO N S EXIST, O PERATO R MU S T N O T US E TH E APPLIAN C E . (O nly a trained service personnel should m ake repairs.)
1)A broken door hinge.
2)A broken door view ing 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.
N o grease, soil or spatter should be allow ed to build up on these surfaces or inside the oven.
D O N O T ATTEM PT TO O PER AT E T HIS APPLIAN CE W IT H TH E D O O R O PEN . The m icrow ave oven has concealed sw itches to m ake sure the power is turned off w hen the door is opened. D o not attem pt to defeat them .
D O N O T ATTEM PT TO SERVIC E TH IS APPLIAN C E U N TIL YO U H AVE R EA D T HIS SERVIC E M ANU AL.
2. FOR SAFE SERVICE PROCEDURES
1) |
If the oven is operative prior to servicing, a m icrowave em ission check should be perform ed prior to servicing the oven. |
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If any certified oven unit is found to servicing, a m icrowave em ission check should be perform ed prior to servicing the oven. |
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(a) inform the m anufacturer, im porter or assem bler, |
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(b) repair the unit at no cost to the ow ner, |
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(c) attem pt to ascertain the cause of the excessive leakage, |
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(d) tell the ow ner 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 |
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m anufacturer im m ediately. |
IMPORTANT
The wire in this m ains lead coloured in accordance w ith the follow ing code.
G reen-and-yellow : Earth
Blue |
: N eutral |
Brow n |
: Live |
As the colours of the w ires in the m anins lead of this appliance m ay not correspond w ith the coloured m arkings identifying the term inals in your plug, proceed as follow s.
The wire w hich is coloured green-and-yellow m ust be connected to the term ianl in the plug w hich is m arked w ith the l etter ‘E’, earth sym bol or coloured green-and-yellow.
The wire w hich is coloured blue m ust be connected to the term inal w hich is m arked w ith the letter ‘N ’ or coloured black.
The wire w hich is coloured brow n m ust be connected to the term inal w hich is m arked with the letter ‘L’ or coloured red.
NOTE
This oven is designed for counter-top use only.
SPECIFICATIONS
M O D E L |
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K O R -6367 |
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K O R -8667 |
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P OW E R S U P P LY |
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230V ~50H z, S ING LE PH A S E W ITH E A RTH ING |
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P OW E R |
M IC RO WAVE |
1200W |
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1350W |
C ON S U M PTIO N |
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G R ILL |
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C O M B IN ATION |
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M IC R O WAV E EN E R G Y O U TP U T |
850W |
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950W |
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M IC R O WAV E FR E Q U EN C Y |
2450M H z |
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O UTS ID E D IM EN S IO NS (W X H X D) |
465 x 279 x 370 m m |
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495 x 294 x 403 m m |
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(18.3 x 11.0 x 14.6 in.) |
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(19.5 x 11.6 x 15.9 in.) |
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C AV IT Y D IM E N S ION S (W X H X D ) |
290 x 220 x 306 m m |
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320 x 244 x 338 m m |
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(11.4 x 8.7 x 12.0 in.) |
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(12.6 x 9.6 x 13.3 in.) |
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N ET W E IG H T |
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A P P RO X . 13.5 K g ( 30.9 lbs.) |
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AP P R OX . 15 Kg ( 33.1 lbs.) |
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TIM E R |
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60 m in. D UA L S PE E D |
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FUN C TIO N S E LE C TION S |
M IC RO W AV E |
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P OW E R S E LE CTIO N S |
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7 LEV E LS |
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C AV IT Y V OLU M E |
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0.7 C u.Ft. |
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0.9 C u. Ft. |
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∙ SPECIFIC ATIO N S AR E SU BJEC T TO C HAN G E W ITHO U T N O TICE .
EXTERNAL VIEW
1. OUTER DIMENSION(KOR-6367/kor-8667) |
2. FEATURE DIAGRAM
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. Safety interlock system |
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. Door viewing screen - Allow s view ing of food. The screen is designed so that light can pass through, but not the m icrow ave. |
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. Door hook - W hen the door is closed, it w ill autom atically shut. If the door is opened w hile the oven is operating, the m agnetron |
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will im m ediately stop operating. |
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. Oven cavity |
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. Door seal - D oor seal m aintains the m icrow ave energy w ithin the oven cavity and prevents m icrow ave leakage. |
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. Glass cooking tray - M ade of special heat resistant glass. Food in a proper receptacle is placed on this tray for cooking. |
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. Roller guide - This m ust alw ays be used for cooking together w ith the glass cooking tray. |
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. Coupler - This fits over the shaft in the center of the ovens cavity floor. This is to rem ain in the oven for all cooking. |
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. Knob V.P.C - U sed to select a m icrow ave pow er level. |
10. Knob tim er - Used in setting cooking tim e for all functions.
INSTALLATION
1. Steady, flat location
This m icrow ave oven should be set on a steady, flat surface. This m icrow ave oven is designed for counter top use only.
2. Leave space behind and side
All air vents should be kept a clearance. If all vents are covered during operation, the oven m ay 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 possible.
4. Away from heating appliances and water taps
Keep the oven aw ay from hot air, steam or splash w hen choosing a place to position it, or the insulation m ight be adversely affected and breakdow ns occur.
5. Power supply
∙ C heck your local pow er source.
This m icrow ave oven requires a current of approxim ately 6 am peres, 230 Volts, 50 Hz. ∙ Pow er supply cord is about 0.8 m eters long.
∙ The voltage used m ust be the sam e as specified on this oven. U sing a higher voltage m ay result in a fire or other accident causing oven dam age. U sing low voltage w ill cause slow cooking. W e are not responsible for dam age resulting from use of this oven w ith a voltage of am pere fuse other than those specified.
∙ This appliance is supplied w ith cable of special type, w hich, if dam aged, m ust be repaired w ith cable of sam e type. Such a cable can be purchased from D AEW O O and m ust be installed by a Q ualified Person.
6. Examine the oven after unpacking for any dam age such as:
A m isaligned door, broken door or a dent in cavity.
If any of the above are visible, D O N O T IN STALL, and notify dealer im m ediately.
7. Do not operate the oven if it is colder than room temperature
(This m ay occur during delivery in cold w eather.) Allow the oven to becom e room tem perature before operating.
EARTHING INSTRUCTIONS
This appliance m ust be earthed. In the event of an electrical short circuit, earthing reduces the risk of the electric shock by providing an escape w ire for the electric current. This appliance is equipped with a cord having a earthing wire with a earthing plug. The plug m ust be plugged into an outlet that is properly installed and earthed.
WARNING
Im proper use of the earthing plug can result in a risk of electric shock. C onsult a qualified electrician or servicem an if the earthing instructions are not com pletely understood, or if doubt exists as to w hether the appliance is properly earthed, and either : If it is necessary to use an extension cord, use only a 3-w ire extension cord that has a 3-blade earthing plug, and a 3-slot receptacle that will accept the plug on the appliance. The m arked rating of the extension cord should be equal to or greater than the electrical rating of the appliance, or D o not use an extension cord.
OPERATIONS AND FUNCTIONS
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. C onnect the m ain lead to an electrical outlet. |
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. After placing the food in a suitable container, open the oven |
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door and put it on the glass tray. The glass tray m ust alw ays |
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be in place during cooking. |
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60 |
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. C lose the door securely. |
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. C hoose cooking pow er level by setting V.P.C knob to the |
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desired position. R efer to cookbook for recom m ended |
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40 |
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power levels. |
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. D eterm ine cooking tim e. |
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30 |
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C onsult cookbook for recipe tim ing. |
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O ven light turns on and cooling fan starts to operate. |
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M icrow ave cooking starts. |
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. You m ay open the door w hile the oven is operating. |
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NOTE |
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As soon as the door is opened, the safety m echanism |
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1. W hen setting tim er for less than 2 m inutes, turn the |
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stop the generation of m icrow ave pow er and the operation |
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tim er past 2 m inutes and then return to the correct |
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of cooking tim er. |
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tim er setting. |
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If you w ish to change the tim e during cooking, sim ply adjust |
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2. Various clicking nois es m ay be heard w hen turning |
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the tim er to the desired tim e. |
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V.P.C knob. T his is norm al and does not affect the |
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operation of your m icrow ave oven. |
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. W hen the tim er reaches zero, a bell w ill ring and the unit w ill |
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turn off. |
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O ven light turns off. If additional cooking tim e is needed and the |
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door is closed, the oven w ill autom atically start w hen the tim er is reset. |
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M ake sure the oven is properly installed and plugged into the electrical outlet.
Variable power cooking
∙ O n and OF F cycle tim e of m echanical V.P.C sw itch is 30 seconds.
W hen the V.P.C knob is set to the desired position and tim er knob turns to the desired position, the V.P.C sw itch has a cycle (O N /O F F tim e(sec.)) listed below.
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Variable power setting |
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Approxim ate Percentage |
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Sym bol |
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Power level |
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of Power |
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KOR-6367 |
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KOR-8667 |
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H IGH |
M AX |
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M A X |
100 % |
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M E D HIG H |
750W |
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840W |
88 % |
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M E DIU M |
620W |
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690W |
73 % |
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LO W S TA GE |
500W |
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560W |
59 % |
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D E FRO S T |
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17 % |
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H E AT |
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26 % |
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G E N TLE H EATIN G |
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18 % |
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DISASSEMBLY AND ASSEMBLY
Cautions to be observed when trouble shooting
U nlike m any other appliances, the m icrow ave oven is high-voltage, high-current equipm ent. It is com pletely safe during norm al operation. H ow ever, carelessness in servicing the oven can result in an electric shock or possible danger from a short circuit.
You are asked to observe the follow ing precautions carefully.
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. Alw ays rem ove the pow er plug from the outlet before servicing. |
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. U se an insulated screw driver and w ear rubber gloves w hen servicing the high voltage side. |
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. D ischarge the high voltage capacitor before touching any oven com ponents or w iring. |
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1) C heck the earthed. |
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D o not operate on a tw o-w ire extension cord. |
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The m icrow ave oven is designed to be used w hile earthed. |
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It is im perative, therefore, to m ake sure it is earthed properly |
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before beginning repair w ork. |
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2) Warning about the electric charge in the high voltage capacitor. |
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For about 30 seconds after the operation has stopped an electric |
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charge rem ains in the high voltage capacitor. W hen replacing |
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or checking parts, short betw een oven chassis and the negative |
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high term inal of the high voltage capacitor by using a properly |
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insulated screwdriver to discharge. |
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. W hen the 12A fuse is blow n due to the operation of the m onitor |
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sw itch; replace prim ary interlock sw itch, secondary interlock sw itch |
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and interlock m onitor sw itch. |
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. After repair or replacem ent of parts, m ake sure that the screw s are |
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properly tightened, and all electrical connections are tightened. |
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. D o not operate w ithout cabinet. |
CAUTION
Service personnel should rem ove their w atches w henever w orking close to or replacing the m agnetron.
WARNING
W hen servicing the appliance, the a care w hen touching or replacing high potential parts because of electrical shock or exposing m icrow ave. These parts are as follow s - H V Transform er, M agnetron, H V C apacitor, H V D iode. H V Fuse.
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