Daewoo Electronics KOR-631G0A User's Manual
Contents
1. Kitchen Timer Used as minute timer 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 time INSTALLATION 1 Steady flat location This microwave 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 be overheated and eventually cause oven 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 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 Check your local power source This microwave oven requires a current of approximately 12 10 KOR 630A9A amperes 120Volts 60Hz grounded outlet Power supply cord is about 0 8 meters long 1 A short power supply cord is provided to reduce the risks resulting from becoming entangled in or tripping over a longer cord 2 Longer cord sets or extension cords are available and may be used if care is exercised in their use 3 If a long cord or extension cord is used 1 The marked elect2. JOWLIDA YOOTAIN AWAYA 25 PRINTED CIRCUIT BOARD 1 CIRCUIT CHECK PROCEDURE 1 Low Voltage Transformer check low voltage transformer is located on the P C B Measuring condition input voltage 120V Frequency 60Hz Terminal Voltage LOAD NO LOAD 4 7 AC 12 6 V AC 14 7 V NOTE 1 Refer to Circuit Diagram point 4 2 Secondary side voltage of the low voltage transformer changes in proportion to fluctuation of power source voltage 3 The allowable tolerance of the secondary voltage is within 5 of nominal voltage 2 Voltage check Key check point NO CHECK POINT REMARK 1 IC 1 PIN 2 21 30 34 5 VDC 2 IC 1 PIN 35 T 16 7ms 60Hz 3 IC 1 PIN 31 OR 32 T 250ns 4MHz Check method NO MEASURE POINT WAVE FORM REMEDY REMARK 1 MP1 DC 5V 0 25V Replace VL1 EC1 NO LOAD 2 MP2 DC 12V 2 0V Replace EC2 D12 13 14 NO LOAD NOTE Each measure point must be measured with GND points 26 3 When there is microwave oscillation 1 When touching START pad oven lamp does not turn on Fan motor do not rotate but cook indicator in display comes on Cause RELAY 2 does not operate refer to Circuit Diagram Point 3 Check method POINT STATE A B RELAY 2 ON 5VDC GND RELAY 2 OFF GND 12VDC 2 When touching START pad oven lamp turns on
3. OUTSIDE DIMENSIONS W X H X D 465x279x360 mm 18 3x11 0x14 2 in 495x294x388 mm 19 5x11 6x15 3 in CAVITY DIMENSIONS W X H X D 290x211x306 mm 11 4x8 3x12 0 in 320x228x388 mm 12 6x9 0 x 13 3 in NET WEIGHT Approx 13 kg 28 66 Ibs Approx 14 kg 30 9 Ibs TIMER 59 min 99 sec FUNCTION SELECTIONS MICROWAVE POWER SELECTIONS 10 LEVELS CAVITY VOLUME 0 7 Cu Ft 0 9 Cu Ft SPECIFICATIONS ARE SUBJECT TO CHANGE WITHOUT NOTICE EXTERNAL VIEW 1 OUTER DIMENSION KOR 631 G H 631 G H9 KOR 861 G H 465 495 360 388 279 294 279 294 2 FEATURE DIAGRAM 10 11 DOOR SEAL Door seal maintains the microwave within the oven cavity and prevents microwave leakage 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 DOOR SCREEN Allows viewing of food Microwave cannot pass through perforations in screen SPATTRSHIELD Protects the microwave outlet from splashes of cooking foods OVEN LAMP Automatically turns on during oven operating SAFETY INTERLOCK SYSTEM CONTROL PANEL GLASS COOKING TRAY Made of s
4. 25 TRS 4X30 MFZN 2 F12 3518601600 MOTOR SHADED POLE 120V 21W OEM 10DWX1 A07 1 F13 3512517000 GUIDE WIND PP 1 F14 3511800300 FAN PP 30 GLASS 1 F15 3518002200 MAGNETRON 2M218H MF I 1 F16 3516004000 SPECIAL SCREW T2 BOLT FLANGE 5X12 DACRO 1 F17 75422 4081 SCREW SPECIAL TT2 TRS 4X8 SE MFZN 1 F18 3513003200 HOLDER HV CAPACITOR SECC T0 6 1 F19 3518301800 CAPACITOR HV 2100VAC 0 77uF 187 1 F20 3516004000 DIODE HV HVR 1X 3AB 12KV 187 1 F21 3518114700 TRANS HV JMOT N90A0 86T 1 F22 3516003700 SPECIAL SCREW TT3 HEX 4X8 FLG MFZN 4 F23 3510311900 BASE SBHG T0 8 1 F24 7112401011 SCREW TAPPING 2 TRS 4 10 MFZN 5 F25 3512100900 FOOT PP DASF 130 2 F26 75422 4081 SCREW SPECIAL TT3 TRS 4X48 SM MFZN 1 F27 3515201101 STOPPER HINGE U SCP 1 T2 5 1 F28 FUSE 120 250V 15 A 1 F29 4415A17352 HOLDER FUSE NYLON66 1 F30 4415A66600 SW MICRO VP 532A OF SPNO 187 200KG 1 F31 4415A66600 SW MICRO VP 533A OF SZM V16 FA 62 1 F32 4415A17352 SW MICRO VP 533A OF SPNO 187 200G 1 F33 3513702600 LEVER LOCK POM 1 35 V Caution In this Service Manual some parts can be changed for improving their performance without notice in the parts list So if you need the latest parts Information please refer to PPL Parts Price List in Service information Center http svc dwe co kr NO PART CODE PART NAME DESCRIPTION Q TY F35 3513811700 LOCK POM 1 F36 3513601500 LAMP BL 125V 25W T25 C5A H187 1 F37 7121400611 SC
5. KO in the other direction 4 Magnetron For complete magnetron diagnosis refer to Measurement of the Microwave Power Output Continuity checks can only indicate and open filament or a shorted magnetron To diagnose for an open filament or a shorted magnetron 1 Isolate magnetron from the circuit by disconnecting the leads 2 A continuity check across magnetron filament terminals should indicate 0 10 or less 3 A continuity check between each filament terminal and magnetron case should read open 5 Fuse If the fuse in the primary and monitor switch circuit is blown when the door is opened check the primary and monitor switch before replacing the blown fuse In case the fuse is blown by an improper switch operation replace the defective switch and fuse at the same time Replace just the fuse if the switches operate normally 24 WIRING DIAGRAM 48 D N35 i0 Xm YOON WO A 8 0 00 X 9 H G AT AIA D 9 W Q LON 19 19 mon m MOINS 18400016 r i CAN c OM 3 M RA sumen TONS j VA 2 3 05 Alddfls d3MOd boe ETE il 9 i AS a Q 0 0 y T
6. SYNCRO 120V 2W GM 16 12F17 1 F39 3518905300 THERMOSTAT OFF 75 ON 65 H 187 NB 1 F40 3513003400 HOLDER THERMOSTAT PBT 1 F41 3516003700 SPECIAL SCREW TT3 HEX 4X8 FLG MFZN 1 F42 3511406200 COVER WAVE GUIDE HEATPROOF PP 1 F43 3517400620 COUPLER XAREC 1 F44 3514700710 ROLLER TEFLON 3 F45 3512517300 GUIDE ROLLER PP 1 F46 3517203600 TRAY GLASS 1 34 1 KOR 861G0A 861H0A V Caution In this Service Manual some parts can be changed for improving their performance without notice in the parts list So if you need the latest parts Information please refer to PPL Parts Price List in Service information Center http svc dwe co kr NO PART CODE PART NAME DESCRIPTION Q TY A00 3511710700 DOOR AS KOR 86150S 1 3516721110 CONTROL PANEL AS KOR 861 GOA 1 3516721120 CONTROL PANEL AS KOR 861H0A 1 F01 3510801400 CABINET POM 70 6 1 F02 3516004100 SPECIAL SCREW T1 TRS 4 10 SE MFZN 3 F03 3516109200 CAVITY WELD AS CAVITY WELD AS 1 3516109700 CAVITY JOINT AS CAVITY WELD AS 1 F04 7112401011 SCREW TAPPING T1 TRS 4 10 MFZN 1 F05 7122401211 SCREW TAPPING 25 TRS 4 12 MFZN 1 F06 7122401211 SCREW TAPPING T2S TRS 4 12 MFZN 1 F07 7112401011 SCREW TAPPING T1 TRS 4 10 MFZN 1 F08 35113TANT5 CORD POWER AS 3X0 75 40X40 120 RTML 1 F09 4413A90012 CLAMP POWER CORD NYLON66 1 F10 7122401211 SCREW TAPPING 25 TRS 4 12 MFZN 1 F11 7121403011 SCREW TAPPING
7. 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 have excessive emission level 5mw cme the service person should 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 SPECIFICATIONS MODEL KOR 631G H KOR 631G H9A KOR 861G H POWER SUPPLY 120V 60Hz SINGLE PHASE WITH GROUNDING MICROWAVE 1200W 1000W 1000W POWER GRILL CONSUMPTION COMBINATION MICROWAVE ENERGY OUTPUT 800W 700W 900W MICROWAVE FREQUENCY 2450MHz
8. o Inox ze H s L 9 815 wor T i is NX I Hey 9 TIEG S zry LZY 90 tA 13534 t I 2 e ee eda a ui 2 2 5 l zz epi LC sits le j W m Tad 1 LA NINOL 23801 O 1 To Ps 122024 ETE o Ve Cu g g 1 T T gz 00 ler lar ler lay M3MOd e NNI pd d ti o 107 918 9 dois PEN se 4 bi E B S N N3HDLI 2012 wan i 5 5 y y TOJ H 80 zo Silt 47 le yanun F le ssa Gon L ut SA P s ojiz IO 5 g 5 g 109 i 6z COM agon ngon 47 ss uk 527921 1937 63 T c3 N37083 N37083 1 TOH 5 A 151 LA NO CD Ec a a eee ets 4 9 1 HA ela ZA SSVA Z Far tda g ORT ie poe 2 19 G5 L6M LOSS TRIS am 99 e 590 0 eg Z8 2 9 9 am PAPERONE 19 1 ha y Mia o lo 27 lo D 2 jefe jie 2 124 L 7 8 4 614 ZZ 01 8 q 02 ld l He G Zu efe m 6l Zid Le p 7 BL lid 2 ZL Old c yu Lol 29 v Caution In this Service Manual some parts can be chang
9. secure the wind guide assembly 2 Draw forward the wind guide assembly Pull the fan from the motor shaft Remove two screws which secure the motor shaded pole Remove the motor shaded pole Reverse the above steps for reassembly were LIII 3 4 5 6 9 To remove H V transformer 1 Remove four screws holding the H V transformer 2 Remove the H V transformer 3 Reverse the above steps for reassembly 16 INTERLOCK MECHANISM AND ADJUSTMENT The door lock mechanism is a device which has been specially designed to completely eliminate microwave radiation when the door is opened during operation and thus to perfectly prevent the danger resulting from the leakage of microwave Hook Primary interlock switc Button Interlock monitor switch Secondory interlock switch Lock lever Mounting screw Condition DOOR CLOSE Condition DOOR OPEN 1 Primary interlock switch When the door is closed the hook locks the oven door If the door is not closed properly the oven will not operate When the door is closed the hook pushes the button of the microswitch Then the button of the primary interlock switch bring it under condition 2 Secondary interlock switch and interlock monitor switch When the door is closed the hook pushes the lock l
10. tela No Defective mag o proper volt r Check continuity of magnetron Continuity netrori age Fuse does not blow inis m Replace Check continuity of No f Open power sup p power supply cord Continuity ply cord Normal j gt Defective touch Replace control circuit s Display do not shown Malfunction ofsec gt Replace countdown ondary interlock switch NOTE All these switches must be replaced at the same time please refer to Interlock Mechanism And Adjustment TROUBLE 2 Display shows all figures selected but oven does not start cooking even though desired program and time are set and start button is tapped CONDITION CHECK RESULT CAUSE REMEDY Turn table Check continuity of primary inter No f Malfunction of pri Adjust or motor and lock switch Continuity mary interlock replace oven lamp switch do not turn on Check continuity of secondary No i Adjust or interlock switch Continuity Malfunction of sec replace ondary interlock switch gt Check D C voltage being sup ay gt Defective touch Replace plied to RELAY RY2 coil control circuit Replace Approx gt Faulty contacts of 15 VDC RELAY RY2 or open relay coil 19 TROUBLE 3 No microwave oscillation even though fan
11. 517003150 BARRIER SCREEN O ACRYL 1 A03 3515304410 SUPPORTER BARR S 0 PP 1 A04 3515204100 STOPPER SINGE TAS KOR 63150S 1 A05 3511705620 DOOR WELD AS KOR 81250S 1 A06 3517002900 BARRIER SCREEN 1 POLYESTER T0 1 1 07 3512300400 GASKET DOOR 1 A08 3513100700 HOOK POM 1 09 3515101300 SPRING HOOK PW1 1 12 1 2 3 4 5 6 7 8 Remove the gasket door from door weld as Remove the barrier screen inner from door weld as Remove the door frame from door weld as Remove the stopper hinge top from door weld as Remove the spring and the hook Remove the supporter barrier screen outer from door frame Remove the barrier screen outer from door frame Reverse the above steps for reassembly gt NE NE ER NA 4 Method to reduce the gap between the door seal and the oven front surface 1 To reduce gap located on part A Loosen a screws on stopper hinge top and then push the door to contact the door seal to oven front surface Tighten two screws 2 To reduce gap located on part B Loosen two screws on stopper hinge under and then push the door to contact the door seal to oven front surface Tighten two screws NOTE A small gap may be acceptable if the microwave leakage does not exceed 4mW cm2 U U 13 latest parts Information please refer PPL Parts Price List Service inform
12. ANSISTOR Q6 KTA 1270Y TZTA1270Y 1 25 TRANS POWER LVTI DMR 631P 5EPU035302 1 26 WIRE COPPER J1 J21 1 0 52 TIN COATING 85801052GY 21 27 WIRE COPPER SJ3 1 0 52 TIN COATING 85801052GY 1 28 IC MICOM IC1 TMP47C440BN 13GS862GH0 1 29 RESONATOR CERA CR1 KBR 4 0MSTF 5PKBR40MKS 1 30 SW RELAY RY1 G5G 1A DC12V 55 0101121 1 31 SW RELAY RY2 O5B 1 DC12V 55 0101110 1 32 CAPACITOR CERA C6 102 50V Z AXIAL CCZB1H102K 1 33 CAPACITOR CERA C1 5 C7 104 50V Z AXIAL CCZF1H104Z 6 V Caution In this Service Manual some parts can be changed for improving their performance without notice in the parts list So if you need the latest parts Information please refer to PPL Parts Price List in Service information Center http svc dwe co kr 2 KOR 861G0A 861H0A NO NAME SYMBOL SPECIFICATION PARTCODE 1 BUZZER BZ1 BM 20K 3515600100 1 2 C ARRAY CA1 7P 6 102 M 50V CN6XB 102M 1 3 CAPACITOR ELEG EC1 16V RSS 100uF CEXF1C101V 1 4 CAPACITOR ELEG EC2 25V RSS 1000uF CEXF1C102V 1 5 CONNECTOR WAFER CN1 YW396 02V 3519150520 1 6 CONNECTOR WAFER CN2 YW396 05V 3519150510 1 7 CONNECTOR WAFER CN3 FCZ254 11 441M367160 1 8 DIODE RECTIFY 01 6 9 12 1N4148 DZN4148 10 9 DIODE RECTIFY D13 14 1N4002A DZN4002A 2 10 DIODE ZENER ZD1 MTZ 5 1B 1 2W DZTZ5R1B 2 11 DIODE ZENER ZD2 MTZ 3 9B 1 2W DZTZ3R9B 1 12 LED DISPLAY DP1 DDG 631H DDDG631H 1 13 PCB MAI
13. Fan motor and turntable rotate and cook indicator in display comes on Cause RELAY 1 does not operate refer to Circuit Diagram Point 2 Check method POINT STATE A B RELAY 1 ON 5VDC GND RELAY 1 OFF GND A2VDC 4 When the door is opened during operation the count down timer does not stop refer to Circuit Diagram Point 1 Check method POINT STATE A B 1 DOOR OPEN OPEN 5VDC 2 DOOR CLOSED CLOSE GND CHECK NO METHOD REMEDY 1 Check the stage ON OFF of the door open monitor switch by Replace door open monitor resistance measurement switch 5 When the digital clock does not operate properly refer to Circuit Diagram Point 5 POINT WAVE FORM A T 16 7ms 60Hz f clock does not keep exact time you must check resistor R15 16 zener diode ZD1 28 1 631 0 631 0 631 9 63109 2 PCB CIRCUIT DIAGRAM P IV fa 0 4 OL 64 975 E zy Ot 6 INY 1 l l 0 0 8 IGM I
14. N M158 81 5X139 9 3514315410 1 14 R ARRAY RA1 7P 6 1 8 100K J RA 87X104J 1 15 RESISTOR RI R7 1 6W 330 5 RD AZ331J 7 16 RESISTOR R8 9 10 14 22 1 6W 1K 5 RD AZ102J 5 17 RESISTOR R11 20 21 1 6W 100K 5 RD AZ104J 3 18 RESISTOR R13 1 6W 100K 5 RD AZ101J 1 19 RESISTOR R15 17 1 6W 10K 5 RD AZ103J 3 20 RESISTOR R18 1 6W 1M 5 RD AZ105J 1 21 RESISTOR R19 1 4W 51 5 RD AZ510J 1 22 REGULATOR VL1 7905 1MC7905C 1 23 TRANSISTOR Q1 5 9 11 KRA 102M TZRA102M 8 24 TRANSISTOR Q6 KTA 1270Y TZTA1270Y 1 25 TRANS POWER LVTI DMR 631P 5EPU035302 1 26 WIRE COPPER J1 J21 1 0 52 TIN COATING 85801052GY 21 27 WIRE COPPER SJ1 SJ3 1 0 52 TIN COATING 85801052GY 2 28 IC MICOM IC1 TMP47C440BN 13GS862GH0 1 29 RESONATOR CERA CR1 KBR 4 0MSTF 5PKBR40MKS 1 30 SW RELAY RY1 G5G 1A DC12V 55 0101121 1 31 SW RELAY RY2 G5B 1DC12V 55 0101110 1 32 CAPACITOR CERA C6 102 50V Z AXIAL CCZB1H102K 1 33 CAPACITOR CERA C1 5 C7 104 50V Z AXIAL CCZF1H104Z 6 EXPLODED VIEW 5 LIST 1 DOOR ASSEMBLY Refer to Disassembly and assembly 2 CONTROL PANEL ASSEMBLY Refer to Disassembly and assembly 3 TOTAL ASSEMBLY F10 F08 d earns 4 A i Y E i 2 K 5 5 0 Fi z e 4 x 32 V Caution In this Service Manual some parts can be chang
15. PGB CIHGUIT DIAGRAM ett NUN n uuu ua uuu eate eap eee aaa x EDI ba 29 PC B LOCATION Mom 30 EXPLODED VIEW AND PARTS LIST i p 32 DOOR ASSEMB L Ye I MON Nm 32 CONTROL PANEL ASSEMBLY L ku ada Mada ES 32 TOTAL ASSEMBEM e n 32 SAFETY 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 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
16. REW TAPPING T2S PAN 4X6 MFZN 1 F38 3966820200 MOTOR SYNCRO 120V 2W GM 16 12F17 1 F39 3518905300 THERMOSTAT OFF 75 ON 65 H 187 NB 1 F40 3513003400 HOLDER THERMOSTAT PBT 1 F41 3516003700 SPECIAL SCREW TT3 TRS 4X8 MFZN 1 F42 3511406200 COVER WAVE GUIDE HEATPRO OF PP 1 F43 3517400620 COUPLER XAREC 1 F44 3514700900 ROLLER TEFLON 3 F45 3512509200 GUIDE ROLLER PP 1 F46 3517203500 TRAY GLASS 1 36 S M NO R631G0A003 DAEWOO DAEWOO ELECTRONICS CO LTD 686 AHYEON DONG MAPO GU SEOUL KOREA C P O BOX 8003 SEOUL KOREA TELEX DWELEC K28177 8 CABLE DAEWOOELEC PRINTED DATE Aug 2001
17. SCREW T2 BOLT FLANGE 5X12 DACRO 1 F17 7272400811 SCREW SPECIAL TT3 TRS 4X8 SE MFZN 1 F18 3513003200 HOLDER HV CAPACITOR SECC 10 6 1 3518301600 CAPACITOR HV 2100VAC 0 79 187 1 3518301501 CAPACITOR HV 2100VAC 0 77uF 187 KOR 631G HOA F20 3518400400 DIODE HV HVR 1X 3AB 12KV 187 1 3518114400 TRANS HV JMOT N80A0 63T KOR 631G H9A FAM 3518114450 TRANS HV DT N70A0 63T 1 F22 3516003700 SPECIAL SCREW TT3 HEX 4X8 FLG MFZN 4 F23 3510311700 BASE SBHG 0 8 1 F24 7112401011 SCREW TAPPING 1 TRS 410 MFZN 5 F25 3512100900 FOOT PP DASF 130 2 F26 7S422X4081 SCREW TAPTITE TT3 TRS 4X8 MFZN 1 F27 3515201101 STOPPER HINGE U SCP 1 1 F28 i FUSE 120 250V 15A 1 F29 4415A17352 HOLDER FUSE NYLON66 1 F30 4415A17352 SW MICRO VP 533A OF SPNO 187 2000 1 1 4415 66600 SW MICRO VP 532A OF SZM V16 FA 62 1 4415A17352 SW MICRO VP 533A OF SPNO 187 2000 1 Foe 3518571000 SW MICRO MP101C KOR 631G H9A F33 3513702600 LEVER LOCK 1 33 V Caution In this Service Manual some parts can be changed for improving their performance without notice in the parts list So if you need the latest parts Information please refer to PPL Parts Price List in Service information Center http svc dwe co kr NO PART CODE PART NAME DESCRIPTION Q TY1 F35 3513811720 LOCK POM LG gt 1 F36 3513601500 LAMP BL 125V 25W T25 C5A H187 1 F37 7121400611 SCREW TAPPING T2S PAN 4X6 MFZN 1 F38 3966820200 MOTOR
18. SIM No R631G0A003 Service Manual Microwave Oven Model KOR 631G0A KOR 631H0A KOR 631G9A KOR 631H9A KOR 861G0A KOR 861H0A Caution In this Manual some parts can be changed for improving their performance without notice in the parts list So if you need the latest parts information please refer to PPL Parts Price List in Service Information Center http svc dwe co kr Aug 2003 DAZN OO ELECTRONICS PRECAUTIONS 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 rele
19. T PROCEDURE High voltage is present at the high voltage terminal of the high voltage transformer during any cooking cycle e It is neither necessary nor advisable to attempt measurement of the high voltage Before touching any oven components or wiring always unplug the oven from its power source and discharge the capacitor 1 High voltage transformer 1 Remove connections from the transformer terminals and check continuity 2 Normal readings should be as follows Secondary winding Approx 1109 10 Filament winding Approx 00 Primary winding Approx 10 2 High voltage capacitor 1 Check continuity of capacitor with meter on the highest OHM scale 2 A normal capacitor will show continuity for a short time and then indicate 10MQ once the capacitor is charged 3 A shorted capacitor will show continuous continuity 4 An open capacitor will show constant 10MO b Resistance between each terminal and chassis should be infinite 3 High voltage diode 1 Isolate the diode from the circuit by disconnecting the leads 2 With the ohmmeter set on the highest resistance scale measure the resistance across the diode terminals Reverse the meter leads and again observe the resistance reading Meter with 6V 9V or higher voltage batteries should be used to check the front back resistance of the diode otherwise an infinite resistance may be read A normal diode s resistance will be infinite in one direction and several hundred
20. ased 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 ee e e a aa a a aae 2 FOR SAFE OPERA TON RS e S S Qu e 2 FOR SAFE SERVICE PROCEDURES nt e ER 2 SPECIFICATIONS ii n 3 EXTERNAL VIEW RED 4 OUTER DIMENSJON iii u 4 FEATURE DIAGRAM 5 ONTROL PANEL ii i i ied uuu Wad at uqa ER aa uuu a a au a 6 BN drew C asaan 8 OPERATIONS AND FUNCTIONS a eraa i te 9 DISASSEMBLY AND ASSEMBLY ec 10 INTERLOCK MECHANISM AND ADJUSTMENT 17 0 5 eroe ee t ete ten aa Sa up ass 18 MEASUREMENT AND TEST 22 MEASUREMENT OF THE MICROWAVE POWER OVTPDOT 22 MICROWAVE RADIATION cierra 23 COMPONENT TEST PROCEDURE Mind 24 WIRING DIAGRAM mm 25 PRINTED GIRCUII BOARD u 26 GIRCUIT CHECK PROCEDURE 26
21. ate a probable defective touch control circuit or membrane switch assembly 1 Incomplete segments 1 Segments missing 2 Partical segments missing 3 Digit flickering other than normal display slight flickering 4 0 does not display when power is on 2 A distinct change in the display is not on when it should be 3 One or more digits in the display are not on when they should be M W DEF TIMER LOCK Ib 4 Display indicates a number different from one touched 5 Specific numbers for example 2 or 3 will not display when the knob is turned 6 Display does not count down or up with time cooking or clock operation 7 Oven is programable and cooks normally but no display shows 8 Display obviously jumps in time while counting down 9 Display counts down noticeably too fast while cooking 10 Display does not show the time of day when cancel button is touched 11 Oven lamp and turntable motor do not stop although cooking is finished Check if the RELAY 2 contacts close if they are close replace touch control circuit CONDITION CHECK RESULT CAUSE REMEDY Display does Check rach pad for Malfunction Replace con not show continuity of the membrane of touch trol box sub programming keyboard for the following key control circuit assembly at all even if board check procedur
22. ation Center http svc dwe co kr 5 To remove control panel parts V Caution In this Service Manual some parts can be changed for improving their performance without notice in the parts list So if you need the B01 06 05 1 KOR 631G0A 631H0A 631H9A 631G9A REFNO PART CODE DESCRIPTION REMARK Bos 3518521000 SWITCH MEMBRANE KOR 631G0A 9A 1 3518521010 SWITCH MEMBRANE 631 9 1 3516719500 CONTROL PANEL 5 345 700 1 B02 3516719530 CONTROL PANEL VT 0826 AF 348 1 KOR 631G H9A B03 3514320660 5 KOR 631H9A 1 B04 7122401211 SCREW TAPPING T2S TRS 4X12 MFZN 3 B05 3513702710 LEVER DOOR OPEN ABS XR 401 H 2938 1 B06 441G430171 SPRING BUTTON SWP DIA0 7 1 07 3516906900 BUTTONDOOROPEN ABS 345 HFA 700HT 1 2 KOR 861G0A 861H0A REF NO PART CODE PART NAME DESCRIPTION Q TY REMARK Bo 8518521500 SWITCH MEMBRANE KOR 861G0A 1 3518521510 SWITCH MEMBRANE KOR 861H0A 1 B02 3516720400 CONTROL PANEL ABS AF 345 HFA 700HT 1 B03 3514320910 MAIN AS KOR 861G0A 1 B04 7122401211 SCREW TAPPING T2S TRS 4X12 MFZN 1 05 3513702710 LEVER DOOR ABS XR 401 H 2938 1 B06 441G430171 SPRING BUTTON SWP DIA0 7 1 B07 3516906900 BUTTONDOOROPEN ABS XR 401 2938 1 1 Remove the screw which secure the control pane
23. ble as following Heating time is measured while the microwave generator is operating at full power The filament heat up time for magnetron is not included 6 The initial and final temperature of water is selected so that the maximum difference between the ambient and final water temperature is 5K 7 The microwave power output P in watts is calculated from the following formula P 4187 X AT is difference between initial and ending temperature e t is the heating time The power measured should be B Refer to SPECIFICATIONS W 10 0 CAUTION 1 Water load should be measured exactly to 1 liters 2 Input power voltage should be exactly specified voltage Refer to SPECIFICATIONS Ambient temperature should be 20 2 C 68 3 6 F Heating time for power output A second 70 64 60 56 52 49 47 44 42 40 38 B W 600 650 700 750 800 850 900 950 1000 1050 1100 22 2 MICROWAVE TEST CAUTION 1 Make sure to check the microwave leakage before and after repair of adjustment 2 Always start measuring of an unknown field to assure safety for operating personnel from microwave energy 3 Do not place your hands into any suspected microwave radiation field unless the safe density level is known 4 Care should be taken not to place the eyes in direct line with the source of microwave energy 5 Slowly approach the unit under te
24. d connected of the terminals and power cord before check the parts listed below TROUBLE 1 Oven does not operate at all any inputs can not be accepted CONDITION CHECK RESULT CAUSE REMEDY Fuse blows gt l Replace Check continuity of interlock gt Continuity i bli NOTE 1 monitor switch with door closed tor switch No Continuity Replace fuse Check continuity of of primary gt interlock switch contact with door 3 Continuity 24 Replace partially open until interlock moni 1 tor switch contact close Check continuity of primary Defective low winding of low voltage trans Approx voltage trans former 150 210 former normal Disconnect one side of the lead Normal gt Defective high wire connected form high volt voltage capacitor age transformer to the high volt age capacitor and operate the Res unit Fuse again Defective high blows voltage trans former 18 CONDITION CHECK RESULT CAUSE REMEDY m Replace Outlet has
25. d ware rubber gloves when servicing the high voltage side 3 Discharge the high voltage capacitor before touching any oven components or wiring 1 Check the grounding Do not operate on a two wire extension cord The microwave oven is designed to be used while earthed It is imperative therefore to make sure it is earthed properly before beginning repair work 2 Warning about the electric charge in the high voltage capacitor For about 30 seconds after the operation stopped and electric charge remains in the high voltage capacitor When replacing or checking parts short between oven chassis and the negative high terminal of the high voltage capacitor by using a properly insulated screwdriver to discharge 4 When the 15A fuse is blown out due to the operation of the monitor switch replace primary interlock switch secondary interlock switch and interlock monitor switch 5 After repair or replacement of parts make sure that the screws are properly tightened and all electrical connections are tightened 6 Do not operate without cabinet CAUTION Service personnel should remove their watches whenever working close to or replacing the magnetron WARNING When servicing the appliance need a care of touching or replacing high potential parts because of electrical shock or exposing microwave These parts are as follows HV Transformer Magnetron HV Capacitor HV Diode 10 1 To remov
26. e cabinet 1 Remove three screws cabinet back A 2 Push the cabinet backward 2 To remove door assembly 1 Remove two screws which secure the stopper hinge top 2 Remove the door assembly from top plate of cavity 3 Reverse the above for reassembly NOTE After replacing the door assembly perform a check of correct alignment with the hinge and cavity front plate 11 v Caution In this Service Manual some parts can be changed for improving their performance without notice in the parts list So if you need the latest parts Information please refer to PPL Parts Price List in Service information Center http svc dwe co kr 3 To remove door parts A08 A09 1 KOR 631G0A 631H0A 631H9A 631G9A REFNO PART CODE PART NAME DESCRIPTION REMARK A01 3512203870 FRAME DOOR ABS SG 175 SG 0760B 1 A02 3517006180 BARRIER SCREEN O SAN T1 5 1 A03 3515304610 SUPPORTER BARR S 0 PP 1 A04 3515204100 STOPPER SINGE TAS KOR 63150S 1 A05 3511705500 DOOR WELD AS KOR 61150S 1 A06 3517002800 BARRIER SCREEN I POLYESTER 0 1 1 A07 3512300200 GASKET DOOR PP 1 A08 3513100740 HOOK POM LG gt 1 A09 3515101300 SPRING HOOK PW1 1 2 KOR 861G0A 861H0A REFNO PART CODE PART NAME DESCRIPTION REMARK A01 3512204110 FRAME DOOR ABS XR 401 H 2938 1 A02 3
27. e of control box keyboard is sub assembly touched Abnormal gt Malfunction gt Replace the of the membrane membrane keyboard keyboard NOTE Before following the particular steps listed above in the trouble shooting guide for the membrane keyboard s failure please check for the continuity of each wire harness between the membrane keyboard and P C B assembly 21 MEASUREMENT AND TEST 1 MEASUREMENT OF THE MICROWAVE POWER OUTPUT Microwave output power can be checked by indirectly measuring the temperature rise of a certain amount of water exposed to the microwave as directed below PROCEDURE 1 Microwave power output measurement is made with the microwave oven supplied at rated voltage and operated at its maximum microwave power setting with a load of 1000 5cc of potable water 2 The water is contained in a cylindrical borosilicate glass vessel having a maximum material thickness of 3 mm and an outside diameter of approxi mately 190 mm 3 The oven and the empty vessel are at ambient temperature prior to the start of the test The initial temperature of the water is 10 2 C 50 3 6 F It is measured immediately before the water is added to the vessel After addition of the water to the vessel the load is immediately placed on the center of the shelf which is in the lowest normal position 4 Microwave power is switched on 5 Heating time should be exactly A seconds Refer to ta
28. ed for improving their performance without notice in the parts list So if you need the latest parts Information please refer to PPL Parts Price List in Service information Center http svc dwe co kr 1 KOR 631G0A 631H0A 631H9A 631G9A NO PART CODE PART NAME DESCRIPTION QTY 3511710300 DOORAS KOR 63150S 1 06 3511714400 DOOR AS KOR 631H9A 1 3516721410 CONTROL PANEL AS KOR 631G0A 1 3516721420 CONTROL PANEL AS KOR 631H0A 1 3516721230 CONTROL PANEL AS KOR 631H9A 1 F01 3510801310 CABINET PCM T0 36 GE 1 F02 3516004100 SPECIAL SCREW TRS LR4 POLE 4 10 MFZN 3 3516109000 CAVITY WELD AS CAVITY WELD AS 1 Foe 3516109600 CAVITY JOINT AS CAVITY WELD AS 1 F04 7112401011 SCREW TAPPING Tt TRS 410 MFZN 1 FO5 7122401211 SCREW TAPPING T28 TRS 4 12 MFZN 1 F06 7122401211 SCREW TAPPING T28 TRS 412 MFZN 1 F07 7112401011 SCREW TAPPING T1 TRS 4 10 MFZN 1 FO8 35113NANOH CORD POWERAS 3X18AWG 60X60 120 RTML 1 FO9 4413A90012 CLAMP POWER CORD NYLON66 1 F10 7122401211 SCREW TAPPING 125 TRS 4 12 MFZN 1 F11 7121403011 SCREW TAPPING T2S PAN 4X30 MFZN 2 3963821600 MOTOR SHADED POLE 120V 21W OEM 10DWX1 A07 1 Ele 3963821620 MOTOR SHADED POLE 120V 21W MW08XA A01 KOR 631G H9A F13 3512517000 GUIDE WIND PP 1 14 3511800300 FAN PP 30 GLASS 1 F15 3518002200 MAGNETRON 2M218H MF 1 F16 3516004000 SPECIAL
29. ed for improving their performance without notice in the parts list So if you need the latest parts Information please refer to PPL Parts Price List in Service information Center http svc dwe co kr 3 P C B LOCATION NO 1 KOR 631G0A 631H0A 631H9A 631G9A NO NAME SYMBOL SPECIFICATION PARTCODE 1 BUZZER BZ1 BM 20K 3515600100 1 2 ARRAY 1 6 102 M 50V CN6XB 102M 1 3 CAPACITOR ELEC 25V RSS 100uF CEXE1C101V 1 4 CAPACITOR ELEG EC2 25V RSS 1000uF DEZF1E102V 1 5 CONNECTOR WAFER CN1 YW396 02AV 3519150520 1 6 CONNECTOR WAFER CN2 YW396 05AV 3519150510 1 7 CONNECTOR WAFER CN3 FCZ254 11 441M367160 1 8 DIODE RECTIFY D1 6 9 12 1N4148 DZN4148 10 9 DIODE RECTIFY D13 14 1N4002A DZN4002A 2 10 DIODE ZENER ZD1 MTZ 5 1VB 1 2W DZTZ5R1B 2 11 DIODE ZENER ZD2 MTZ 3 9VB 1 2W DZTZ3R9B 1 12 LED DISPLAY DP1 DDG 631H DDDG631H 1 13 PCB MAIN M158 81 5X139 9 3514315410 1 14 R ARRAY RA1 7P 6 1 8 100K J RD 87X104J 1 15 RESISTOR R1 R7 1 6W 330 5 RD AZ331J 7 16 RESISTOR R8 10 12 14 22 1 6W 1K 5 RD AZ102J 5 17 RESISTOR R11 20 21 1 6W 100K 5 RD AZ104J 3 18 RESISTOR R13 1 6W 100 5 RD AZ101J 1 19 RESISTOR R15 17 1 6W 10K 5 RD AZ103J 3 20 RESISTOR R18 1 6W 1M 5 RD AZ105J 1 21 RESISTOR R19 1 AW 51 5 RD 4Z510J 1 22 REGULATOR VL1 7905 1MC7905C 1 23 TRANSISTOR Q1 5 9711 KRA 102M TZRA102M 8 24 TR
30. ed to remove time from cooking Auto Defrost Used to defrost foods for weight Defrost Used to defrost foods for time Time set pad Used to set the cooking time and the present time Display Cooking time power level indicators and present time are displayed One touch Used to cook or reheat specific quantities of food Kitchen Timer Used as minute timer delay cooking hold setting after cooking Stop Clear Used to stop the oven operation or to delete the cooking data Start Speedy cook Used to start the oven and also used to set a reheat time 3 CONTROL PANEL 1 KOR 631H0A 631H9A 861H0A BB BHB IS ONU UNS ONE M W DEF TIMER LOCK Ib BEVERAGE MORE FRESH FROZE VEGETABLE PIZZA FROZEN HESS VEGETABLE MEAT POULTRY FIS i DO b Dp II I 28 s START STOP CLEAR a je Time set pad Used to set the cooking time and the present time Displav Cooking time power level indicators and present time are displaved One touch Used to cook or reheat specific quantities of food More Used to add time to cooking Less Used to remove time from cooking Auto Defrost Used to defrost foods for weight Power Used to set power level Defrost Used to defrost foods for time D v Or
31. ever downward The lock lever presses the button of the interlock monitor switch to bring it under OFF condition and presses the button of the secondary interlock switch to bring it under condition ADJUSTMENT Interlock monitor switch When the door is closed the interlock monitor switch should be opened before other switches are closed When the door is opened the interlock monitor switch should be closed after other switches are opened 3 Adjustment steps a Loosen the two mounting screws b Adjust interlock switch assembly position c Make sure that lock lever moves smoothly after adjustment is completed d Tighten completely two mounting screws NOTE Microwave emission test should be performed after adjusting interlock mechanism If the microwave smission exceed 4mW cm2 readjust interlock mechanism 17 TROUBLE 5 GUIDE Following the procedure below to check if the oven is defective or not 1 Check grounding before trouble checking 2 Be careful of the high voltage circuit 3 Discharge the high voltage capacitor 4 When checking the continuity of the switches fuse or high voltage transformer disconnect one lead wire from these parts and check continuity with the AC plug removed To do otherwise may result in a false reading or damage to your meter NOTE When electric parts are checked be sure the power cord is not inserted the wall outlet Check wire harness wiring an
32. l push up two snap fits and draw forward the control panel assembly 2 Remove the door open lever from the control panel Remove four screws which secure the PCB assembly to control panel Disconnect membrane tail from the connector of the PCB assembly Detach membrane from the control panel Remove door open button and button spring from the control panel 3 4 5 6 7 Reverse the above steps for reassembly 6 To remove high voltage capacitor 1 Remove a screw which secure the grounding ring terminal of the H V diode and the capacitor holder 2 Remove the H V diode from the capacitor holder 3 Reverse the above steps for reassembly High voltage circuit wiring 7 To remove magnetron 1 Remove a screw which secure the magnetron 2 Remove the magnetron 3 Reverse the above steps for reassembly NOTE Never install the magnetron without the metallic gasket plate which is packed with each magnetron to pre vent microwave leakage Whenever repair work is carried out on magnetron check the microwave leakage It shall not exceed 4mW cm for a fully assembled oven with door normally closed 15 Magnetron antenn Metallic 5 Wave guide Magnetron antenna 1 n Cooling fin Filament terminal Metallic gasket plate lt MAGNETRON gt 8 To remove wind guide assembly 1 Remove a screw which
33. motor rotates CONDITION CHECK RESULT CAUSE REMEDY Ne gt Continuity microwave Check continuity of high y Defective high Replace oscillation voltage capacitor terminals voltage trans with wires removed former Check continuity of high voltage gt Continuity D P Defective high Replace gt rectifier in forward and backward backward voltage rectifier direction with DC megger direction Connect megger leads to mag gt Continuity gt Defective mag Replace L netron terminal and magnetron netron body Check resistance of primary and 000 gt Defective high Replace secondary coil of high voltage voltage trans transformer former m No Repl Check continuity of magnetron Continuity Defective mag with wires removed netron No EE ive hi Replace Check continuity of filament termi Continuit PAAR p y voltage trans nal of high voltage transformer i ormer P 0 Repl Check D C voltage being sup Defective touch plied to RELAY RY1 coil control circuit Approx Faulty Replace 15 VDC contacts or RELAY RY1 or open relay coil 20 TROUBLE 4 following visual conditions indic
34. pecial heat resistant glass The tray must always be in proper position before operating Do not cook food directly on the tray OVEN FRONT PLATE 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 ROLLER GUIDE Supports the glass cooling tray 3 CONTROL PANEL 1 KOR 631G0A 631G9A 2 KOR 861G0A s oe NES ONG OSE UNES WE DEF TIMER LOCK b 1 BREAD 2 50 4 FRESH VEGETABLE bs UP 3 BAKED POTATO S FROZEN VEGETABLE Er BN cas MORE LESS popcorn FR OZEN IZZA DINNER PIZZ PLATE AUTO DEFROST 2 A STOP CLEAR P T aa START SPEEDY COOK O 22 M W DEF TIMER LOCK b ae AUTO DE POUL FROST RY FISH T T T 215 e KITCHEN ji CLOCK 6 718 EU ii I et STOP CLEAR START SPEEDY COOK lid CU o oe E _ O Clock Used to set cloc N Auto cook Used to cook or reheat More Used to add time to cooking Power Used to set power level k Less Us
35. rical rating of the cord set or extension cord should be at least as great as the electrical rat ing of the appliance 2 The extension cord must be a grounding type 3 wire cord 3 The longer cord should be arranged so that it will not drape over the counter top or tabletop where it can be pulled on by children or tripped over unintentionally 6 Examine the oven after unpacking for any damage such as A misaligned door broken door or a dent in cavity If any of the above are visible DO NOT INSTALL and notify dealer immediately OPERATIONS AND FUNCTIONS a LOK 1 Connect the main lead to an electrical outlet After placing the food in a suitable container open the oven door and put it on the glass tray The glass tray must always be in place during cooking Close the door securely When the oven door is opened the light turns off The oven door can be opened at any time during operation by touching the door release button on the control panel The oven will automatically shut off To restart the oven close the door and then touch START Each time a button is touched a BEEP will sound to acknowledge the touch The oven automatically cook on full power unless set to a lower power level The display will show 0 when the oven is plugged in Time clock returns to the present time when the cooking time ends 0 When the STOP CLEAR pad is touched during the oven operatiion the oven s
36. st until the radiometer reads an appreciable microwave leakage from the unit under the test PROCEDURES Prepare Microwave Energv Survev Meter 600 glass beaker and glass thermometer 100 C 212 F 2 Pour 275cc 15cc of tap water initially at 20 5 C 68 9 F in the 600cc glass beaker with an inside diameter of approx 95mm 3 5in Place it at the center of the tray and set it in a cavity gt Close the door operate the oven 5 Measure the leakage by using Microwave Energy Survey Meter with dual ranges set to 2450MHz 1 Measured radiation leakage must not exceed the value prescribed below Leakage for a fully assembled oven with door normally closed must be less than 4mW cm 2 When measuring the leakage always use the 5cm 2in space cone with probe Hold the probe perpendicular to the cabinet and door Place the space cone of the probe on the door cabinet door seem door viewing screen the exhaust air vents and the suction air vents 3 Measuring should be in a counter clockwise direction at a rate of 1 in sec If the leakage of the cabinet door seem is unknown move the probe more slowly 4 When measuring near a corner of the door keep the probe perpendicular to the areas making sure the probe end at the base of the cone does not get closer than 2 in from any metal If it does not erroneous reading may result 23 3 COMPONENT TES
37. tops cooking and all information retained To erase all information except the present time touch the STOP SLEAR pad once more If the oven door is opened during the oven operation all information is retained 1 lf the START pad is touched and the oven does not operate check the area between the door and door is closed securely The oven will not start cooking under the door is completely closed or the program has been reset Make sure the oven is properly installed and plugged into the electrical Wattage output chart The power level is set by pressing the POWER pad The chart shows the display the power level and the percentage of power Touch POWER pad Power level Display Approximate Percentage of Power Once P HI 10096 Twice P 90 9096 3 times P 80 80 4 times P 70 70 5 times P 60 60 6 times P 50 50 7 times P 40 40 8 times P 30 30 9 times P 20 20 10 times P 10 10 11 times P 00 0 DISASSEMBLY ASSEMBLY Cautions to be observed when trouble shooting Unlike many other appliances the microwave oven is high voltage high current equipment It is completely safe during normal operation However carelessness in servicing the oven can result in an electric shock or possible danger from a short circuit You are asked to observe the following precautions carefully 1 Always remove the power plug from the outlet before servicing 2 Use an insulated screwdriver an
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