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Service Manual

Microwave Oven

Model: KOR-145M0P

KOR-145Q0P

DAEWOO ELECTRONICS CO., LTD.

✔

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).

Содержание KOR-145M0P

Страница 1: ...ELECTRONICS CO LTD 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 Pa...

Страница 2: ...nterlock 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...

Страница 3: ...ase 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 sur...

Страница 4: ...POWER 900 W IEC 705 FREQUENCY 2450 MHZ OUTSIDE DIMENSIONS W X H X D 560 X 360 X 396 mm 22 X 14 2 X 15 6 in CAVITY DIMENSIONS W X H X D 382 X 270 X 360 mm 15 0 X 10 6 X 14 2 in NET WEIGHT APPROX 18 5...

Страница 5: ...interlock system Prevents the oven from operating while the door is opened 6 Door release button Pushing this button stops oven operation and opens the door 7 Glass cooking tray Made of special heat...

Страница 6: ...tton Pushing this button stops oven operation and opens the door 7 Glass cooking tray Made of special heat resistant glass The tray must always be in proper position before operating Do not cook food...

Страница 7: ...e used must be the same as specified on this Microwave Oven Using a higher voltage may result in a tire or other accident causing oven damage Using low voltage will cause slow cooking We are not respo...

Страница 8: ...he oven automatically cook on full power unless set to a lower power level 5The display will show 0 when the oven is plugged in 6Time clock returns to the present time when the cooking time ends 7When...

Страница 9: ...is a 24 hour clock system The display will then begin blinking CLOCK A START 0 3 2 1 CLOCK A START CLOCK A START NOTE This oven is multiple clock system If you want 12 hour clock system can be omitte...

Страница 10: ...play will show the numbers you pressed in the order you touched START 0 0 5 AUTO DEFROST STAGE DEFROST 1 2 WEIGHT TIME AUTO START LOCK NO CUPS g STAGE DEFROST 1 2 WEIGHT TIME AUTO START LOCK NO CUPS g...

Страница 11: ...ME AUTO START LOCK NO CUPS g STAGE DEFROST 1 2 WEIGHT TIME AUTO START LOCK NO CUPS g When you touch START pad the TIME DEFROST indicator starts blinking to show the oven is in the TIME DEFROST mode Th...

Страница 12: ...PS g STAGE DEFROST 1 2 WEIGHT TIME AUTO START LOCK NO CUPS g STAGE DEFROST 1 2 WEIGHT TIME AUTO START LOCK NO CUPS g When you touch START pad the STAGE 1 indicator starts blinking to show the oven is...

Страница 13: ...ill show what you touched The display will show the numbers you pressed in the order you touched This example shows 4 minutes 20 seconds at power level 8 START 0 2 4 8 POWER 0 3 5 STAGE DEFROST 1 2 WE...

Страница 14: ...ill show the numbers you pressed in the order you touched The STAGE 1 indicator lights and P is displayed P HI will appear in the displayed This example shows full power 100 The display will show the...

Страница 15: ...TIME AUTO START When you touch START pad the WEIGHT DEFROST STAGE 1 and STAGE 2 indicators come on to confirm the power levels selected The WEIGHT DEFROST indicator starts blinking to show you that t...

Страница 16: ...ears in the display and the cooking program indicators come on The AUTO START indicator and the colon start blinking When the selected start time arrives the oven begins operating and the oven light t...

Страница 17: ...Y COOK pad you can also extend reheating time to 5 minutes by 30 seconds TO CHECK AUTO START TIME SPEEDY COOK DO THIS THIS HAPPENS 1 Touch CLOCK A START pad CLOCK A START The programmed AUTO START tim...

Страница 18: ...g Touch POPCORN twice within 1 5 seconds NOTE 1 Use prepackaged room temperature microwave popcorn 2 Place bag in oven according to manufacturer s directions 3 Pop only one bag at a time 4 After poppi...

Страница 19: ...pizza does not melt sufficiently cook a few seconds longer 4 Some brands of frozen pizza may require more or less cooking time BEVERAGE 250ml cup 1 cup mug Touch BEVERAGE once 2 cups mugs Touch BEVERA...

Страница 20: ...r the 1 5 seconds the display changed into cooking time of quantity and the oven starts cooking SOUP STAGE DEFROST 1 2 WEIGHT TIME AUTO START LOCK NO CUPS g NOTE For best results consult the cookbook...

Страница 21: ...within 1 5 seconds NOTE For best results consult the cookbook NOTE For best results consult the cookbook BAKED POTATO 160 180g ea 1 NO ea Touch BAKED POTATO once 2 NO ea Touch BAKED POTATO twice with...

Страница 22: ...ching this pad you can select other food category as shown in the chart below 1 is displayed After 1 5 seconds the display changed into cooking time of quantity and the oven starts cooking WEIGHT MENU...

Страница 23: ...must enter in new instructions 2 Open the door You can restart the oven by closing the door and touching START MORE LESS CHILD SAFETY LOCK TO STOP THE OVEN WHILE THE OVEN IS OPERATING NOTE Oven stops...

Страница 24: ...the oven door If the door is not closed properly the oven will not operate When the door is closed the pushes the button of the micro switch Then the button of the primary interlock switch bring it u...

Страница 25: ...should be NO condition after other switches open Secondary interlock switch and door open monitor switch The movement of the switch button should exceed 1 2mm measured at the top of the button 3 Adju...

Страница 26: ...heating time The power measured should be 900W 10 P 4187 X T t MICROWAVE EMISSION TEST WARNING Make sure to check the microwave leakage before and after repair or adjustment Always start measuring of...

Страница 27: ...it does erroneous reading may result NOTE RD RED WH WHITE BK BLACK GN GREEN BR BROWN OR ORANGE BL BLUE GY GRAY GE GREEN YELLOW CL CAVITY LAMP FM FAN BLOWER MOTOR GM GEARD MOTOR CONDITION DOOR CLOSED...

Страница 28: ...agnetron by blowing the air coming from the intake on the rear plate hole 3 The oven lamp light the inside of the oven 4 Indicator light turns on to indicate function operation Cooking time starts cou...

Страница 29: ...the microwave oven from power level 1 to HI 100 power One complete ON and OFF cycle of the RELAY 1 is 29 seconds The relation between indications on the control panel and the output of the microwave o...

Страница 30: ...e and creates the short circuit 6 If the contacts of primary interlock switch malfunction the 15A fuse blows open due to the large current surge caused by the short circuit activation and this in turn...

Страница 31: ...2 wire extension cord The microwave oven is designed to be used when grounded It is imperative therefore to makes sure it is grounded properly before beginning repair work 2 Warning about the electri...

Страница 32: ...or assembly 1 Remove three bolts 1 and nuts 2 which secure top hinge and under hinge stopper respectively 2 Remove the top hinge stopper 4 and under hinge stopper 5 3 Remove door assembly 6 4 Reverse...

Страница 33: ...ct the seal to oven front surface 2 Tighten two bolts and nuts 3 To reduce gap located on part C See Fig 5 1 Remove the cabinet 2 Loosen a screw on interlock switch assembly located bottom of oven bod...

Страница 34: ...ed front plate 2 Remove two screws holding control panel assembly to the oven front At the same time draw forward the control panel assembly from oven front 3 Remove the push lever 7 4 Remove three sc...

Страница 35: ...2 Remove capacitor holder 3 with capacitor 4 3 Reverse the above steps for reassembly High voltage circuit wiring 7 To remove magnetron 1 Remove a screws 1 which secure guide air assy 2 and remove gu...

Страница 36: ...above for reassembly 9 To remove transformer 1 Remove four tapping screws 1 2 Remove the transformer 2 3 Reverse the above steps for reassembly CAUTION Never install the magnetron without the metalli...

Страница 37: ...of the tray motor 1 Cut the TRAY MOTOR COVER from the BASE PLATE 2 Disconnect two terminal wires from the tray motor 3 Remove two screws 2 holding the tray motor 4 To install a new tray motor reverse...

Страница 38: ...DE 1 Incomplete segments A Segments missing B Partical segments missing C Digit flickering other than normal fluorescent slight flickering D 0 does not display when power is on 2 A distinct change in...

Страница 39: ...control box sub assembly Abnormal Malfunction of the membrane keyboard NOTE Before following the particular steps listed above in the trouble shooting guide for the membrane keyboard failure please c...

Страница 40: ...4 5 6 7 8 9 10 11 PCB Connection AUTO DEF SPEEDY COOK POPCORN SOUP MUFFIN BEVERAGE BAKED POTATO FROZEN PIZZA DINNER PLATE FRESH VEGETABLE 1 STAGE 2 WEIGHT TIME AUTO START DEFROST LOCK NO CUPS g STOP C...

Страница 41: ...1 5 pad Between A and F 12 0 pad Between A and G 13 POWER pad Between A and H 14 SPEEDY COOK pad Between A and I 15 6 pad Between B and F 16 1 pad Between B and G 17 SOUP pad Between B and H 18 MUFFIN...

Страница 42: ...START CLO A ST STOP CLEAR 8 9 10 11 N C 11 5 pad Between S and F 12 0 pad Between A and G 13 POWER pad Between A and H 14 SPEEDY COOK pad Between A and I 15 MENU pad Between A and K 16 6 pad Between B...

Страница 43: ...t with door partially open until interlock monitor switch contact close Continuity Short contacts of primary interlock switch Approx 90 110 normal Replace Check continuity of primary winding of low vo...

Страница 44: ...tinuity Malfunction of Primary Interlock Switch Replace Check D C voltage being supplied to RELAY 2 coil 0V Defective touch control circuit Replace Approx 24VDC Faulty contacts of RELAY 2 or open rela...

Страница 45: ...agnetron No Continuity Continuity Defective magnetron Replace Check continuity of filament terminal of high voltage transformer No Continuity Continuity Defective high voltage transformer Replace Chec...

Страница 46: ...in power source voltage Customer education Check the timing periods of the RELAY 1 coil Abnormal Defective touch control circuit Replace Normal Aging change of magnetron Replace depending on the resu...

Страница 47: ...teries should be used to check the frontback resis tance of the diode otherwise an infinite resistance may be read in both directions A normal diode resistance will be infinite in one direction and se...

Страница 48: ...check is interlock monitor switch primary and secondary interlock switches check Make circuits like Fig a Fig b Fig c for tests 1 In case of interlock monitor check Lamp on or zero resistance Conditi...

Страница 49: ...VDC T 20 ms 50Hz 3 IC1 PIN 22 4 IC1 PIN 8 or 9 5 DP1 PIN 1 25 2 4VAC DISPLAY FILAMENT VOLTAGE NO MEASURE POINT WAVEFORM REMEDY REMARK See Page 51 1 MP 1 DC 5 0 25V Replace ZD2 EC1 EC2 NO LOAD 3 MP 2 D...

Страница 50: ...E MICOM OUTPUT PIN NO IN PIN NO STAGE 1 LOCK don t come on GRID 1 G1 21 30 STAGE 2 NO don t come on GRID 1 G2 17 29 WEIGHT DEFROST CUPS doesn t come on GRID 3 G3 9 26 TIME DEFROST doesn t come on GRID...

Страница 51: ...51 MP 1 MP 3 MP 2 Fig 3 Measurement Point...

Страница 52: ...imer does not stop CHECK METHOD POINT A STAGE RELAY 2 ON 24VDC RELAY 2 OFF GND POINT A B STAGE RELAY 1 ON 5VDC GND RELAY 1 OFF GND 24VDC POINT A B STAGE 1 DOOR OPENED OPEN 5VDC 2 DOOR CLOSED CLOSE GND...

Страница 53: ...53 6 When the digital clock does not operate properly If clock does not keep exact time you must check resistor R17 R11 D11 D12 D14 D13 R17 R11 C4 22 IC1 A POINT WAVEFORM A 0V 14V T 16 67 ms...

Страница 54: ...54 2 PCB CIRCUIT DIAGRAM BAKED POTATO FRESH VEGETABLE SOUP KOR 145QOS Only WEIGHT MENU KOR 145MOS Only...

Страница 55: ...55 3 COMPONENT INFORMATION TRANSISTOR DIODE AND ZENER DIODE Emitter Collector Q 1 3 5 Base DIODE CATHODE K ZENER DIODE CATHODE K ANODE A D1 7 9 14 ANODE A ZD 1 3...

Страница 56: ...56 4 PRINTED CIRCUITS BOARD...

Страница 57: ...1 20 CAPACITOR CERAMIC C1 3 HIKF 50V 0 1 F Z CBXF1H104Z 3 21 CAPACITOR ELECTROLYTIC EC5 220 F 50V RSS CEXE1H221V 1 22 CAPACITOR ELECTROLYTIC EC1 2 47 F 16V RS CEXF1C470A 2 23 CAPACITOR ELECTROLYTIC E...

Страница 58: ...3513100500 HOOK ACETAL 1 A4 3511706800 DOOR PAINTING AS KOR 145M0A 1 A5 3512202600 FRAME DOOR ABS 1 A6 3517003300 BARRIER SCREEN O ACRYL 1 A7 3515101400 SPRING HOOK HSW 3 1 Caution In this Service Man...

Страница 59: ...1 B4 3513701700 LEVER DOOR OPEN ACETAL DURACON M90 02 1 B5 3516904200 BUTTON DOOR OPEN ABS 1 B6 441G430171 SPRING DOOR BUTTON SWP DIA 0 7 1 C PANEL AS PKCPSWMEOO KOR 145M C PANEL AS PKCPSWMFOO KOR 145...

Страница 60: ...EXPLODED VIEW 60 27 26 25 24 28 29 1 2 3 4 8 7 9 10 30 11 16 15 14 17 18 19 21 22 23 6 5 34 A00 B00 32 36 31 35...

Страница 61: ...F22 441X318022 PUSH LEVER ACETAL DURACON 1 F23 3966310100 MOTOR SYNCRO 220V 2 5W GM 16 24FD12 1 F24 3511403200 COVER WAVE GUIDE P P 1 F25 3517400600 COUPLER PPS 1 F26 441X336000 GUIDE ROLLER AS KOR 10...

Страница 62: ...P001 DAEWOO ELECTRONICS CO LTD 686 AHYEON DONG MAPO GU SEOUL KOREA C P O BOX 8003 SEOUL KOREA TELEX DWELEC K28177 8 CABLE DAEWOOELEC FAX 02 360 8184 TEL 02 360 8183 http www dwe daewoo co kr PRINTED D...

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