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Service Manual

Microwave Oven

Model: KOR-164H0W

S/M No. :

OR164H0W01

May. 2014

✔

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).

Dongbu Daewoo Electronics

Содержание KOR-164H0W

Страница 1: ...14 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 Dongbu Daewoo Electronics ...

Страница 2: ...in the interlock monitor door seal and microwave generation and transmission systems shall be repaired replaced or adjusted by procedures described in this manual before the oven is released to the owner e A microwave leakage check to verify compliance with the Federal performance standard should be performed on each oven prior to release to the owner TABLE OF CONTENTS SAFETY AND PRECAUTIONS 3 FOR...

Страница 3: ... certified oven unit is found to servicing a microwave emission check should be performed prior to servicing the oven a inform the manufacturer importer or assembler b repair the unit at no cost to the owner c attempt to ascertain the cause of the excessive leakage d tell the owner of the unit not to use the unit until the oven has been brought into compliance 3 If the oven operates with the door ...

Страница 4: ...ENSIONS W x H x D CAVITY DIMENSIONS W x H x D NET WEIGHT TIMER FUNCTION SELECTIONS POWER SELECTIONS 4 SPECIFICATIONS KOR 164H0W 230V 50Hz SINGLE PHASE WITH earthing 1400 W 1000 W 2450 MHz 589 X 339 X 486mm 399 X 274 X 426mm APPROX 18 5kg 99min 90sec MICROWAVE 11 LEVELS Specifications are subject to change without notice ...

Страница 5: ...5 EXTERNAL VIEW 1 OUTER DIMENSION ...

Страница 6: ...d Microwave cannot pass through perforations in screen 4 SPATTER SHIELD Protects the microwave outlet from splashes of cooking foods 5 OVEN LAMP Automatically turns on during oven operating 6 SAFETY INTERLOCK SYSTEM 7 CONTROL PANEL 8 GLASS COOKING TRAY Made of special heat resistant glass The tray must always be in proper position before operating Do not cook food directly on the tray 9 OVEN FRONT...

Страница 7: ...el 8 Defrost Used to defrost foods for time 9 Kitchen Timer Used as a 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 Dish Warmer M W Def Timer Lock g Fresh Vegetable Frozen Vegetable Auto Defrost Poutly Meat 1ho...

Страница 8: ...e of special type which if damaged must be repaired with cable of same type Such a cable be purchased from DAEWOO and must be installed by a Qualified Person 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 7 Do not operate the oven if it is colder than room tempe...

Страница 9: ...OP CLEAR pad is touched during the oven operation the oven stops cooking and all information retained To erase all information except the present time touch the STOP CLEAR pad once more If the oven door is opened during the oven operation all information is retained 10 If the START pad is touched and the oven does not operate check the area between the door and door is closed securely The oven wil...

Страница 10: ...ing repair work 2 Warning about the electric charge in the high voltage capacitor For about 30 seconds after the operation has stopped 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 12A fuse is blown due to...

Страница 11: ...ard 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 ...

Страница 12: ...sembly A01 3512301800 GASKET DOOR PP 1 A02 3517005200 BARRIER SCREEN I PE T0 1 1 A03 3513101600 HOOK POM 1 A04 3515102000 SPRING HOOK PW1 1 A05 3511710500 DOOR PAINTING AS KOR 161H0A 1 A06 3515204400 STOPPER HINGE T AS KOR 162J0A 1 A07 3517005360 BARRIER SCREEN O TEMP GLASS T3 2 MIRROR 1 A08 7122402011 SCREW TAPPING T2S TRS 4X20 MFZN 2 A09 3512203930 FRAME DOOR ABS SG 175 SG 0760D 1 A10 3511607700...

Страница 13: ...Tighten two screws 3 To reduce gap located on part C Loosen the screw on the interlock switch assembly located the top of the oven body Draw the interlock switch assembly inward as possible to engage with the hook on the door bottom Tighten a screw 4 To reduce gap located on part D Loosen the screw on the interlock switch assembly located the bottom of the oven body 4 Method to reduce the gap betw...

Страница 14: ... 3 Disconnect membrane tail from the connector of the PCB assembly 4 Detach membrane from the control panel 5 Reverse the above steps for reassembly B01 3518521860 SWITCH MEMBRANE KOR 164H0S 1 B02 3511608500 DECORATOR C PANEL SUS T0 5 1 B03 3516719160 CONTROL PANEL ABS SG 175 SG 0760D 1 B04 PKMPMSFH91 PCB MAIN MANUAL AS 16 1000W S 10 99 1 B05 7122401211 SCREW TAPPING T2S TRS 4 12 MFZN 4 REF NO PAR...

Страница 15: ...m2 for a fully assembled oven with door normally closed 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 ...

Страница 16: ... assembly 4 Draw forward the wind guide assembly 5 Pull the fan from the motor shaft 6 Remove two screws which secure the motor shaded pole 7 Remove the motor shaded pole 8 Reverse the above steps for reasembly 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 ...

Страница 17: ...terlock 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 ON condition 2 Secondary interlock switch and interlock monitor switch When the door is closed the hook pushes the lock lever downward The...

Страница 18: ...he terminals and power cord before check the parts listed below CONDITION CHECK Check continuty of interlock monitor switch with door closed COM NC Check continuity of both primary and secondary interlock switch with door colosed Malfunction of interlock monitor switch Malfunction of interlock switch RESULT Continuity No Continuity CAUSE REMEDY Replace NOTE 1 Fuse blows Replace NOTE 1 Shorted cont...

Страница 19: ... Continuity Adjust or replace Check D C voltage being supplied to RELAY RY2 coil Defective touch control circuit 0 V Replace Faulty contacts of RELAY RY2 or open relay coil Approx 15 VDC Replace Check continuity of noise filter board Defective line filter board No Continuity Replace Check continuity of power supply cord Open power supply cord No Continuity Replace Defective touch control circuit N...

Страница 20: ...ads to magnetron terminal and magnetron body Continuity Defective magnetron Replace Check resistance of primary and secondary coil of high voltage transformer 0 Ω or Defective high voltage transformer Replace Check continuity of magnetron with wires removed No Continuity Defective magnetron Replace Check continuity of filament terminal of high voltage transformer No Continuity Defective high volta...

Страница 21: ... jumps in time while counting down 9 Display counts down noticeable too fast while cooking 10 Display does not show the time of day when clear pad 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 NOTE Before following the particular steps listed above in the trouble shooting guid...

Страница 22: ...he 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 table 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 sel...

Страница 23: ... in 3 Place it at the center of the tray and set it in a cavity 4 Close the door and 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 cm2 2 When measuring the leakage always use the 5 ...

Страница 24: ...eter 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 in both directions A normal diode s resistance will be infinite in one direction and severa...

Страница 25: ...25 WIRING DIAGRAM ...

Страница 26: ... Each measure point must be measured with GND points NOTE 1 Refer to Circuit Diagram 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 Terminal Voltage 4 5 6 7 LOAD AC 12 6 V NO LOAD AC 14 7 V NO MEASURE POINT WAVE FORM REMEDY REMARK 1 MP1 DC 5V 0 25V...

Страница 27: ...27 Measure Point MP1 GND MP2 ...

Страница 28: ...ock does not operate properly refer to Circuit Diagram If clock does not keep exact time you must check resistor R19 R20 D9 C6 and zener diode ZD2 STATE POINT A B RELAY 2 ON 5VDC GND RELAY 2 OFF GND 15VDC STATE POINT A B RELAY 1 ON 5VDC GND RELAY 1 OFF GND 15VDC STATE POINT 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 sw...

Страница 29: ...29 2 PCB CIRCUIT DIAGRAM ...

Страница 30: ...7 PCB MAIN BOARD 9KC3514315411 M158 1 1 18 R ARRAY RA1 9KCRA 88X104J 8P 7 1 8 100K OHM J 1 19 R ARRAY RA2 9KCRA 87X104J 7P 6 1 8 100K OHM J 1 20 R CARBON FILM R1 10 12 17 18 22 9KCRD AZ102J 1 6 1K OHM J 6 21 R CARBON FILM R11 9KCRD AZ201J 1 6 200 OHM J 1 22 R CARBON FILM R13 19 20 9KCRD AZ103J 1 6 10K OHM J 3 23 R CARBON FILM R14 9KCRD AZ105J 1 6 1M OHM J 1 24 R CARBON FILM R2 8 9KCRD AZ331J 1 6 3...

Страница 31: ...31 EXPLODED VIEW AND PARTS LIST 1 DOOR ASSEMBLY Refer to Disassembly and assembly 2 CONTROL PANEL ASSEMBLY Refer to Disassembly and assembly 3 TOTAL ASSEMBLY ...

Страница 32: ...8002900 MAGNETRON 2M218J F P 6CF 1 F15 7272400811 SCREW TAPTITE TT3 TRS 4X8 MFZN 1 F16 3513003200 HOLDER HV CAPACITOR SECC T0 5 1 F17 3518302301 CAPACITOR HV 2100VAC 1 10UF 187 80MM 1 F18 3518400400 DIODE HV HVR 1X 3AB 12KV 187 1 F19 3518700230 FUSE HV 5KV 0 7A HV 41A70 1 187 1 F20 3518104320 TRANS HV R1S5AA ES00 1 F21 3516003700 SPECIAL SCREW TT3 HEX 4X8 FLG MFZN 4 F22 3512101400 FOOT DASF 310 4 ...

Страница 33: ... TAPPING T2S PAN 4X6 MFZN 1 F38 3518905300 THERMOSTAT OFF 75 ON 65 H 187 NB 1 F39 3513003410 HOLDER THERMOSTAT PP BK 1 F40 7272400811 SCREW TAPTITE TT3 TRS 4X8 MFZN 2 F41 3517400600 COUPLER XAREC 1 F42 3511406200 COVER WAVE GUIDE HEATPROOF PP 1 F43 3512517600 GUIDE ROLLER AS KOR 161H0A 1 F44 3517207600 TRAY DIA 340 1300G 1 REF NO PART CODE PART NAME DESCRIPTION Q TY REMARK ...

Страница 34: ...DONGBU DAEWOO ELECTRONICS CORP Dongbu Financial Center 432 Teheran ro Gangnam gu Seoul 135 523 Korea PRINTED DATE May 2014 S M NO ...

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