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Daewoo KOR-630A1A manual

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Table of contents for the manual

  • Page 1

    Se r vice Manual Mic r owave Oven Model : KOR - 630A1 A KOR-630A0A KOR-860A1 A KOR-860A0A KOR-630A9A DAEWOO ELECTRONICS CO., L TD. S/M No. : R630A0A9A1[...]

  • Page 2

    1 PRECAUTIONS T O BE OBSERVED BEFORE AND DURING SERVICING T O A VOID POSSIBLE EXPOSURE T O EXCESSIVE MICROW A VE 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: ([...]

  • Page 3

    2 SAFETY AND PRECAUTIONS 1. FOR SAFE OPERA TION Damage that allows the microwave energy (that cooks or heats the food) to escape will result in poor cooking and may 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[...]

  • Page 4

    3 MODEL KOR-630A0A, KOR-630A1A KOR-860A0A, KOR-860A1A POWER SUPPLY 120V~60Hz, SINGLE PHASE WITH GROUNDING POWER MICROWAVE 1200W 1350W CONSUMPTION GRILL COMBINATION MICROWAVE ENERGY OUTPUT 800W 900W MICROWAVE FREQUENCY 2450MHz OUTSIDE DIMENSIONS (W X H X D) 465 x 279 x 360 mm (18.3 x 11.0 x 14.2 in) 495 x 294 x 388 mm (19.5 x 11.6 x 15.3 in) CAVITY [...]

  • Page 5

    4 EXTERNAL VIEW 1. OUTER DIMENSION 465/495 360/388 279/294[...]

  • Page 6

    5 1. DOOR SEAL Door seal maintains the microwave within the oven cavity and prevents microwave leakage. 2. 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. 3. DOOR SCREEN Allows viewing of food. Microwave cannot pass through perforations in[...]

  • Page 7

    6 BVERAGE 1. Time set pad – Used to set the cooking time and the present time. 2. Display – Cooking time, power level, indicators and present time are displayed. 3. One touch – Used to cook or reheat specific quantities of food. 4. Auto cook – Used to cook or reheat. 5. More – Used to add time to cooking. 6. Less – Used to remove time f[...]

  • Page 8

    7 INST ALLA TION 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. A way from radio, and TV sets Poor television reception and r[...]

  • Page 9

    8 OPERA TIONS AND FUNCTIONS 1. Connect the main lead to an electrical outlet. 2. 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. 3. Close the door securely. 4. When the oven door is opened, the light turns off. 5. The oven door can be opened at a[...]

  • Page 10

    9 DISASSEMBL Y AND ASSEMBL Y 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 obs[...]

  • Page 11

    10 1. T o remove cabinet 1) Remove three screws on cabinet back. 2) Push the cabinet backward. 2. T o 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 [...]

  • Page 12

    11 3. T o remove door parts. REF NO. PART CODE PART NAME DESCRIPTION Q’TY REMARK A01 3512203810 FRAME DOOR ABS XR-401, H-2938 1 KOR-630A0A/1A 3512203890 FRAME DOOR ABS SG-175V, SG-076D 1 KOR-630A9A A02 3517003050 BARRIER-SCREEN*0 ACRYL 1 A03 3515304610 SUPPORTER BARR-S*0 PP 1 A04 3515204100 STOPPER SINGE *T AS KOR-63150S 1 A05 3511705500 DOOR WEL[...]

  • Page 13

    12 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 [...]

  • Page 14

    13 5. T o remove control panel parts. 1) Remove the screw which secure the control panel, push up two snap fits and draw forward the control panel assembly. 2) Remove the door open lever from the control panel. 3) Remove four screws which secure the PCB assembly to control panel. 4) Disconnect membrane tail from the connector of the PCB assembly. 5[...]

  • Page 15

    14 6. T o 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. T o remove magnetron. 1) Remove a screw which secure the magnetron. 2) Remo[...]

  • Page 16

    15 8. T o remove wind guide assembly . 1) Remove a screw which secure the wind guide assembly. 2) Draw forward the wind guide assembly. 3) Pull the fan from the motor shaft. 4) Remove two screws which secure the motor shaded pole. 5) Remove the motor shaded pole. 6) Reverse the above steps for reassembly. 9. T o remove H.V .transformer . 1) Remove [...]

  • Page 17

    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. (1) Primary interlock switch When the door is closed, the hook locks the o[...]

  • Page 18

    17 (TROUBLE 1) Oven does not operate at all ; any inputs can not be accepted. TROUBLE SHOOTING 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, [...]

  • Page 19

    18 CONDITION CHECK Check continuity of magnetron Defective mag- netron RESULT No Continuity CAUSE REMEDY Replace Outlet has proper volt- age Fuse does not blow. CONDITION CHECK Check continuity of primary inter- lock switch Malfunction of pri- mary interlock switch RESULT No Continuity CAUSE REMEDY Adjust or replace Turn table motor and oven lamp d[...]

  • Page 20

    19 (TROUBLE 3) No microwave oscillation even though fan motor rotates. CONDITION CHECK RESULT Check continuity of high voltage capacitor terminals with wires removed Continuity CAUSE Defective high voltage trans- former REMEDY Replace No microwave oscillation Check continuity of high voltage rectifier in forward and backward direction with DC megge[...]

  • Page 21

    20 (TROUBLE 4) The following visual conditions indicate 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 displa[...]

  • Page 22

    21 MEASUREMENT AND TEST 1. MEASUREMENT OF THE MICROW A VE 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 i[...]

  • Page 23

    22 2. MICROW A VE RADIA TION TEST PROCEDURES 1. Prepare Microwave Energy Survey Meter, 600cc 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.). 3. Place it at the center of the tray and set it in a cavity. [...]

  • Page 24

    23 3. COMPONENT TEST PROCEDURE • High voltage is present at the high voltage terminal of the high voltage transformer during any cooking cycle. • 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 capa[...]

  • Page 25

    24 WIRING DIAGRAM 1) KOR-630A0A/KOR-860A0A/KOR-630A9A[...]

  • Page 26

    25 2) KOR-630A1A/KOR-860A1A[...]

  • Page 27

    26 1. CIRCUIT CHECK PROCEDURE 1. Low V oltage Transformer check • The low voltage transformer is located on the P.C.B. • Measuring condition: input voltage : 120V/Frequency : 60Hz 2. V oltage check • Key check point • Check method PRINTED CIRCUIT BOARD NO CHECK POINT REMARK 1 IC 1 PIN 2, 21, 30, 34 -5 VDC 2 IC 1 PIN 35 3 IC 1 PIN 31 OR 32 N[...]

  • Page 28

    27 Measure Point[...]

  • Page 29

    28 3. When there is no 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 2) When touching START pad, oven lamp turns on. Fan motor and turntable rotate and cook indica[...]

  • Page 30

    29 2. PCB CIRCUIT DIAGRAM[...]

  • Page 31

    30 NO. NAME SYMBOL SPECIFICATION PART CODE Q'TY 1 BUZZER BZ1 BM-20K 3515600100 1 2 C ARRAY CA1 7P(6) 102 M 50V CN6XB-102M 1 3 CAPACITOR ELEC EC1 25V RS IMF CEXE1H109A 1 4 CAPACITOR ELEC EC2 25V RSS 1000uF DEZF1E102V 1 5 CONNECTOR WAFER CN1 YW396-02V 3519150520 1 6 CONNECTOR FILM CN2 FCZ254-11 441M367160 1 7 CONNECTOR WAFER CN3 YW396-05V 351915[...]

  • Page 32

    31 NO. NAME SYMBOL SPECIFICATION PART CODE Q'TY 1 BUZZER BZ1 BM-20K 3515600100 1 2 C ARRAY CA1 7P(6) 102 M 50V CN6XB-102M 1 3 CAPACITOR ELEC EC1 50V RS IMF CEXE1H109A 1 4 CAPACITOR ELEC EC2 25V RSS 1000uF DEZF1E102V 1 5 CONNECTOR WAFER CN1 YW396-02V 3519150520 1 6 CONNECTOR FILM CN2 FCZ254-11 441M367160 1 7 CONNECTOR WAFER CN3 YW396-05V 351915[...]

  • Page 33

    32 NO. NAME SYMBOL SPECIFICATION PART CODE Q'TY 1 BUZZER BZ1 BM-20K 3515600100 1 2 C ARRAY CA1 7P(6) 102 M 50V CN6XB-102M 1 3 CAPACITOR ELEC EC1 50V RS IMF CEXE1H109A 1 4 CAPACITOR ELEC EC2 25V RSS 1000uF DEZF1E102V 1 5 CONNECTOR WAFER CN1 YW396-02V 3519150520 1 6 CONNECTOR FILM CN2 FCZ254-11 441M367160 1 7 CONNECTOR WAFER CN3 YW396-05V 351915[...]

  • Page 34

    33 1. DOOR ASSEMBL Y Refer to Disassembly and assembly . 2. CONTROL P ANEL ASSEMBL Y Refer to Disassembly and assembly . 3. TOT AL ASSEMBL Y(KOR-630A0A/860A0A/630A9A) EXPLODED VIEW AND P AR TS LIST[...]

  • Page 35

    34 NO PART CODE PART NAME DESCRIPTION Q'TY A00 3511710320 DOOR AS KOR-6305OS 1 B00 PKCPSWZF00 CONTROL-PANEL AS KOR-630AOA 1 F01 3510801310 CABINET SECC 1 F02 3516004100 SPECIAL SCREW T1 TRS LR4 POLE 4*10 MFZN 3 F03 3516109600 CAVITY AS KOR-6315OS 1 F04 7112401011 SCREW TAPPING T1 TRS 4*10 MFZN 1 F05 7122401211 SCREW TAPPING T2S TRS 4*12 MFZN 1[...]

  • Page 36

    35 NO PART CODE PART NAME DESCRIPTION Q'TY A00 3511710320 DOOR AS KOR-8605OS 1 B00 PKCPSWNF00 CONTROL-PANEL AS KOR-860AOA 1 F01 3510801400 CABINET SECC 1 F02 3516004100 SPECIAL SCREW T1 TRS LR4 POLE 4*10 MFZN 3 F03 3516109700 CAVITY AS KOR-8615OS 1 F04 7112401011 SCREW TAPPING T1 TRS 4*10 MFZN 1 F05 7122401211 SCREW TAPPING T2S TRS 4*12 MFZN 1[...]

  • Page 37

    36 NO PART CODE PART NAME DESCRIPTION Q'TY A00 3511714410 DOOR AS KOR-630A9A 1 B00 PKCPSWZF10 CONTROL-PANEL AS KOR-630A9A 1 F01 3510801310 CABINET SECC 1 F02 3516004100 SPECIAL SCREW T1 TRS LR4 POLE 4*10 MFZN 3 F03 3516109550 CAVITY AS KOR-631H9A 1 F04 7112401011 SCREW TAPPING T1 TRS 4*10 MFZN 1 F05 7122401211 SCREW TAPPING T2S TRS 4*12 MFZN 1[...]

  • Page 38

    37 1. DOOR ASSEMBL Y Refer to Disassembly and assembly . 2. CONTROL P ANEL ASSEMBL Y Refer to Disassembly and assembly . 3. TOT AL ASSEMBL Y(KOR-630A1A/860A1A)[...]

  • Page 39

    38 NO PART CODE PART NAME DESCRIPTION Q'TY SUPPLY A00 3511710320 DOOR AS KOR-630A0S 1 O B00 PKCPSWZF00 CONTROL-PANEL AS KOR-630A0A 1 O F01 3510801310 CABINET SECC 1 O F02 7S312X40A1 SPECIAL SCREW T1 TRS 4*10 SE MFZN 3 O F03 3516109600 CAVITY AS KOR-63150S 1 O F04 7112401011 SCREW TAPPING T1 TRS 4*10 MFZN 1 O F05 7122401211 SCREW TAPPING T2S TR[...]

  • Page 40

    39 NO PART CODE PART NAME DESCRIPTION Q'TY SUPPLY A00 3511710320 DOOR AS KOR-86050S 1 O B00 PKCPSWZF00 CONTROL-PANEL AS KOR-630A0A 1 O F01 3510801430 CABINET SECC 1 O F02 7S312X40A1 SPECIAL SCREW T1 TRS 4*10 SE MFZN 3 O F03 3516109700 CAVITY AS KOR-86150S 1 O F04 7112401011 SCREW TAPPING T1 TRS 4*10 MFZN 1 O F05 7122401211 SCREW TAPPING T2S TR[...]