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Service Manual

Microwave Oven

Model: KOR-616T0A

KOR-816T0A
KOR-616T1A

DAEWOO ELECTRONICS CO., LTD.

Содержание KOR-616T0A

Страница 1: ...Service Manual Microwave Oven Model KOR 616T0A KOR 816T0A KOR 616T1A DAEWOO ELECTRONICS CO LTD...

Страница 2: ...onents 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...

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: ...mm CAVITY DIMENSIONS W x H x D 320x 225 x 330 mm 290x 200 x 290 mm NET WEIGHT APPROX 14 0Kg APPROX 12 5Kg TIMER 60 min 00 sec POWER SELECTIONS 5 LEVELS 495 409 289 Stop Defrost 1 2 Weight Quantity Tim...

Страница 5: ...fety interlock system Door viewing screen Allows viewing of food The screen is designed so that light can pass through but not the microwaves Glass cooking tray Made of special heat resistant glass Fo...

Страница 6: ...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...

Страница 7: ...he START pad is touched and the oven does not operate check the area between the door and door seal for obstructions and make sure the door is closed securely The oven will not start cooking until the...

Страница 8: ...ugged the clock will have to be reset for the proper time Once power is restored or oven is plugged in the display will show 0 00 To reset the time of day repeat the steps given below To check the tim...

Страница 9: ...e For example 20 minutes 20 00 will show in the display Time 3 Press button The TIME DEFROST indicator light will start blinking to show the oven is in TIME DEFROST mode Time NOTE During the defrostin...

Страница 10: ...light will start blinking to show the oven is in WEIGHT DEFROST mode Weight NOTE During the defrosting operation turn over the food after buzzer sound for completed defrosting NOTE This digital weight...

Страница 11: ...in MICROWAVE mode Stage 1 NOTE To insure the best microwave and defrost results be sure to start with a cool oven Let the oven cool 15 20minutes with the door slightly open Power levels are 800W 650W...

Страница 12: ...show in the display 1 Stage 3 Press POWER button By repeatedly pressing this button you can also select other power levels For example 800WATT KOR 616T 600W The STAGE2 indicator light will light The...

Страница 13: ...e end of stage 1 the oven will beep and start the second stage 2 The STAGE1 indicator light will go off and the STAGE2 indicator light starts blinking The display counts down the time to show you how...

Страница 14: ...sired cooking quantity Auto cook 5 Select the desired cooking quantity For example 3 12 3oz 3 will show in the display Auto cook 3 If you want to select other menu press AUTO COOK button until display...

Страница 15: ...red 8 Buzzer will sound at the end of the cooking time The indicator light will go off The display panel will return to the time of day The oven light will turn off and the turntable will stop turning...

Страница 16: ...ll indicators are lighted setted function Indicator of operating function is blinking SPEEDY COOK 1 min CHILD SAFTY LOCK SETTING THE CONTROL NOTE This key is increased from 30 seconds to 5 minutes If...

Страница 17: ...ods rather than to over cook them If a range of times is stated in a recipe cook the minimun suggested time check for doneness and then cook slightly longer if necessary NOTE Oven stops operating when...

Страница 18: ...cks 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 micro switch Then the button of the primary interlock switch br...

Страница 19: ...Refer to the following diagram 2 Check the connection of monitor switch after replacement 3 Perform the electrical continuity check of interlock switches and microwave emission test mentioned in this...

Страница 20: ...s 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 Heat...

Страница 21: ...a rate of 1 inch sec If the leakage of the cabinet door seam is unknow move the probe more slowly When measuring near a corner of the door keep the probe perpendicular to the areas making sure the pro...

Страница 22: ...GN GREEN GE GREEN YELLOW BR BROWN 2 3 1 L R LIVE INTERLOCK MONITOR SWITCH NEUTRAL POWER SUPPLY SINGLE PHASE ONLY GN BL BL RD RD RD BK BK BL SECONDARY INTERLOCK SWITC H RELAY 2 RELAY 1 CONTROLP W B ASS...

Страница 23: ...ols the magnetron 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 s...

Страница 24: ...icrowave oven from power level 1 to 5 100 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 oven is...

Страница 25: ...pen the display stops counting down 3 Fan motor and turn table stop rotating 4 The oven lamp turns off 5 As soon as the door is opened the interlock monitor switch contacts close and creats the short...

Страница 26: ...e 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 betwee...

Страница 27: ...op and door assembly from top plate of cavity 3 Remove the stopper hinge top from door assembly 4 Reverse the above for reassembly taking care to replace fixing glue 3 To remove door parts DISASSEMBLY...

Страница 28: ...inge stopper and then the door to contact the door seal to oven front surface 2 Tighten three screws 3 To reduce gap located on part C See Fig A 1 Loosen a screw on the interlock switch assembly locat...

Страница 29: ...y B10 4 Remove the PCB ass y B10 from the control panel B02 5 Remove the button cook B04 the button auto cook B09 the button start B03 and the button function B08 from the control panel B02 6 Remove...

Страница 30: ...acitor holder 2 Remove the H V diode from the capacitor holder 3 Remove the above steps for reassembly High voltage circuit wiring 7 To remove magnetron 1 Remove three screws which secure the magnetro...

Страница 31: ...ransformer 2 Remove the transformer 3 Reverse the above steps for reassembly 5 4 2 1 3 1 Magnetron antenna Metallic gasket plate Cooling fin Magnetron Filament terminal 2 1 Wave guide Magnetron antenn...

Страница 32: ...umbers is in the display 3 One or more digits in the display are not on when they should be 4 Display indicates a number different from one setted For example when 5 00 setted 3 00 appears in the disp...

Страница 33: ...ontinuity Malfunction of interlock switch Check continuity of primary interlock switch contact with door partially open unit interlock monitor switch contact close COM NC close Shorted contacts of pri...

Страница 34: ...not turn on Check continuity of primary interlock switch No Continuity Malfunction of Primary interlock switch Adjust or replace Approx 16VDC Faulty contacts of RELAY RY2 open relay coil Replace Defe...

Страница 35: ...efective touch control circuit Replace Check continuity of high voltage recitifier in forward and backward direction with DC meggr Check continuity of filament terminal of high voltage transformer Che...

Страница 36: ...14 and 10 NOTE Before following the particular steps listed above in the trouble shooting guide for failure please check for the continuity of each wire harness between the tact switch keyboard and PC...

Страница 37: ...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 Anormal diodes resistance will be infinite in on...

Страница 38: ...ary and secondary interlock switches check Make circuits like Fig a Fig b for tests SAFETY INTERLOCK CONTINUITY TEST 1 In case of interlock monitor switch check Condition 1 Door is opened 2 Common ter...

Страница 39: ...ble tolerance of the secondary voltage is within 5 of norminal voltage NOTE Each measure point must be measured with GND points 2 Voltage check Key check point MICOM PIN NO CHECK POINT REMARK 1 PIN 21...

Страница 40: ...7 1 SEGMENT a does not come on from G1 to G5 SEGMENT d 19 8 SEGMENT b does not come on from G1 to G5 SEGMENT e 18 7 SEGMENT c does not come on from G1 to G5 SEGMENT f 16 5 SEGMENT d does not come on...

Страница 41: ...40 Fig 5 MEASUREMENT POINT MP2 MP3 MP1...

Страница 42: ...41 Fig 5 MEASUREMENT POINT...

Страница 43: ...ate ON OFF of the secondary Replace secondary interlock switch by resistance measurement interlock switch 36 MICOM RY1 D8 24V Q11 A B 40 MICOM A 5V B R8 R11 SW D O M R7 C3 1 2 CHECK METHOD CHECK METHO...

Страница 44: ...lock does not operate properly 44 C8 D10 R26 R24 R27 A B 5V C C6 Q8 C4 MICOM D12 D11 D13 D14 8 9 R21 R23 POINT WAVEFORM A B C T 16 67 ms 60Hz 5V 0V T If clock does not keep exact time you must check D...

Страница 45: ...44 1 PCB Circuit Diagram 2 P C B CIRCUIT DIAGRAM...

Страница 46: ...45 1 Transistor NPN Type 2 Diode and zener diode Emitter Collecftor Base Cathode k Cathode k ANODE A D1 16 ANODE A ZD1 6 DIODE ZENER DIODE 3 COMPONENT INFORMATION...

Страница 47: ...46 4 PRINTED CIRCUITS BOARD...

Страница 48: ...47...

Страница 49: ...25 1 2W 470 J RD 2Z471JS 3 16 R CARBON FILM R14 1 2W 100 J RD 2Z101JS 1 17 C CERAMIC C1 C5 C7 C9 50V 0 1 F Z CCKF1H473Z 8 18 C CERAMIC C6 50V 0 047 F Z CCKF1H104Z 1 19 C ARRRAY CA1 50V 1000PF 5P CN4XB...

Страница 50: ...4FS 5EPV035301 1 44 DIGITRON DP1 SVM 05SS13 DSVM5SS13 1 45 HOLDER VFD PP BLACK 3513002600 1 46 JUMPER WIRE J3 J7 J13 J17 J20 J25 1 0 52 TIN COATING 85801052GY 10MM 16 47 JUMPER WIRE J1 J2 J10 J11 J12...

Страница 51: ...OR 816T 3515304600 KOR 616T A04 STOPPER HINGE T T AS 3515201500 KOR 6115OS 1 A05 DOOR PAINTING AS 3511706520 KOR 81250S 1 KOR 816T 3511706100 KOR 61150S KOR 616T A06 BARRIER SCREEN T I 3517002900 PE 0...

Страница 52: ...KOR 616T B03 BUTTON START 3516905800 ABS 1 MILKY B04 BUTTON FUNCTION COOK 3516905710 ABS 1 B05 SCREW TAPPING 7621301011 T2S PAN 3X10 PW MFZN 9 B06 WINDOW DISPLAY 3515500910 PMMA 1 KOR 816T 3515500810...

Страница 53: ...52 F05 F07 F08 F09 F10 F11 F12 F13 F14 F15 F16 F17 F18 F19 F20 F21 F22 F23 F24 F25 F26 F27 F28 F30 F31 F32 F33 F35 F36 F37 F39 F40 B00 A00 F01 F02 F03 F04 F05 F34 F29 3 MAIN UNIT KOR 616T 816T0A...

Страница 54: ...53 F42 F41 KOR 616T1A...

Страница 55: ...DED POLE 3963820110 MW10XA R01 1 F19 FAN 3511800300 PP 30 GLASS 1 F20 SCREW TAPTITE 7272400811 TT3 TRS 4X8 MFZN 1 F21 HOLDER HV CAPACITOR 3513001900 SECC T0 8 1 F22 CAPACITOR HV 3518300800 2100VAC 0 8...

Страница 56: ...30 GLASS 1 F20 SCREW TAPTITE 7272400811 TT3 TRS 4X8 MFZN 1 F21 HOLDER HV CAPACITOR 3513001900 SECC T0 8 1 F22 CAPACITOR HV 441L267010 2100VAC 0 70 F 1 F23 DIODE HV 4416V24000 HVR 1X 32B 1 F24 TRANS HV...

Страница 57: ...A001 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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