1. DL manuals
  2. Daewoo
  3. Microwave Oven
  4. KOG-8465
  5. Service Manual

Daewoo KOG-8465 Service Manual

Summary of KOG-8465

  • Page 1

    Service manual microwave oven kog-8465 daewoo electronics co., ltd. Power timer 0 1 2 3 4 5 6 7 8 9 10 20 30 40 50 60 ✔ 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 ...

  • Page 2: Table of Contents

    2 precautions to 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 microwav...

  • Page 3

    Proper use and service precautions caution : this device is to be serviced only by properly qualified service personnel. 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 ene...

  • Page 4

    4 important the wires in this mains lead coloured in accordance with the following code. Green-and-yellow : earth blue : neutral brown : live as the colours of the wires in the mains lead of this appliance may not correspond with the coloured markings identifying the terminals in your plug, proceed ...

  • Page 5: Specifications

    Specifications external views power supply 230v~, 50hz 240v~, 50hz(u.K) power consumption 1,450 w 1,500w microwave output power 900w (iec 705) 900w (iec 705) frequency 2,450 mhz 2,450 mhz grill power consumption 1,400 w 1,500w simultaneous heating power consumption 2,800 w 2,950 w outside dimensions...

  • Page 6: Names and Function of Parts

    6 names and function of parts ¤ door seal door seal maintains the microwave within the oven cavity and prevents microwave leakage. ¤Ł door hook when door is closed, it will autoamtically lock shut. If door is opened while oven is operating, magnetron tube will immediately stop operating. ¤Ø door scr...

  • Page 7: Control Panel

    7 control panel power timer 0 1 2 3 4 5 6 7 8 9 10 20 30 40 50 60 power or function select knob - used to select a microwave power level in m/w, grill or simul. Cooking. - used to select a function before the cooking. 1) m/w oven-used to heat food with microwave. 2) grill-used to browning food with ...

  • Page 8

    8 how to set the oven controls 1. Microwave defrost • this oven has 5-power levels in microwave cooking. • you can select these levels by power knob. 1. Place food inside oven. 2. Set power knob to appropriate m/w power level position. 3. Set timer knob to the cooking time. Note : ¡ be sure to read ...

  • Page 9

    9 2. Grill cooking ¥ grilling in this oven is similar to conventional broiling. ¥ there is no need to preheat the oven for griling. 1. Place food on the metal rack, and set it on the tray. 2. Set power knob to grill position. 3. Set timer knob to the cooking time. Example : to grill hamburgers, stea...

  • Page 10

    10 2. Combination cooking ¥ this oven has 3-cooking levels in simul-cooking. ¥ you can select these levels by power knob. 1. Place food on the metal rack or tray. 2. Set power knob to simul position. 3. Set timer knob to the cooking time. • to prevent the oven operating with the door open, this oven...

  • Page 11

    11 interlock mechanism functions and adjustments the door lock mechanism is a device which has been specially designed to completely eliminate micreowave radiation when the door is opened during operation, and thus to perfectly prevent the danger resulting from the leakage of microwave. (1) primary ...

  • Page 12

    12 (2) secondary interlock switch, monitor interlock switch when the door is closed, the hook pushes the lever lock forward, and the lever presses the button of the interlock monitor switch to bring it under ‘off’ condition. Simultaneously, the lever lock presses the button on the secondary interloc...

  • Page 13

    13 precautions for disassembly and repair - 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 sh...

  • Page 14: Disassembly and Assembly

    14 disassembly and assembly 1. To remove cabinet (refer to fig. 2) 1) remove four screws on cabinet back. 2) push the cabinet backward. 2. To remove parts of guide wind assembly (refer to fig.3) 1) release the earth screw . 2) remove the noise-filter to the guide wind . 3) pull the fan to the motor ...

  • Page 15

    15 3. To remove lamp. (refer to fig. 4) 1) remove a screw holding lamp to the guide air . 2) remove the lamp. 3) reverse the above steps for reassembly. 4. To remove h.V. Transformer (refer to fig. 5) 1) remove four screws which secure the h.V. Transformer bracket to the base plate. 2) remove the h....

  • Page 16

    16 5. To remove magnetron and magnetron thermostat. (refer to fig. 6) 1) remove two screws which secure the thermostat . 2) remove the thermostat. 3) remove three screws which secure the magnetron . 4) remove the magnetron. 5) reverse the above steps for reassembly. Caution : never install the magne...

  • Page 17

    17 ref.No. Part code part name description q’ty remark b1 3516705830 control-panel abs 1 b2 3513403900 knob vpc abs 1 b3 3513401220 knob abs 1 b4 4415a66600 sw micro vp-532a-of spnc #187 1 b5 7121301611 screw tapping t2s pan 3x16 mfzn 1 b6 3515101600 spring flat sus-301 t0.5 1 b7 3517401200 coupler ...

  • Page 18

    18 7. To remove door assembly (refer to fig. 9) 1) remove two bolts and two nuts which secure to hinge. 2) remove door assembly . 3) remove door above for reassembly taking case to replace fixing glue. 8. To remove door parts. (refer to fig. 10) 1) remove the frame door and barrier-screen . 2) remov...

  • Page 19

    19 9. Method to reduce the gap between the door seal and the oven front surface. (1) to reduce gap located on part ‘a’. 1) loosen a hex bolt on top door hinge, then push the door to contact the door seal to oven front surface. 2) tighten a hex bolt. (2) to reduce gap located on part ‘b’. 1) loosen a...

  • Page 20

    20 10. To remove tray motor. (refer to fig. 11) 1) cut the tray motor cover parts from the base plate (refer to fig 11, 12). 2) remove the tray motor cover. 3) remove two screws which secure the tray motor to tray motor bracket. 4) remove the tray motor. Fig. 12 (bottom) (front) slit nipper file fig...

  • Page 21: Trouble Shooting Guide

    21 11. To remove grill heater assembly (refer to fig. 13) 1) release three hex nuts holding the grill heater assembly to top and side plate. 2) remove grill heater assembly. Following the procedure below to check if the oven is defective or not. 1. Check earthing before fault finding. 2. Be careful ...

  • Page 22

    22 note 1 : all these switches must be replaced at the same time, please refer to page 11 and 12 for adjustment instructions. (trouble 1) oven does not operate at all; any inputs can not be accepted condition fuse blows continuity continuity continuity shorted contacts of primary interlock switch no...

  • Page 23

    23 condition grill heater does not heat no continuty check continuity of primary interlock switch check continuity of heater select switch and timer switch check continuity of heater thermostat chech continuity of secondary interlock switch no continuity malfunction of secondary interlock switch adj...

  • Page 24

    24 fuse blows (com ¡Œ nc) condition no microwave oscillation no continuity check continuity of high voltage fuse check continuity of high voltage capacitor terminals with wires removed check continuity of high voltage recitifier in forword and backward direction with dc megger continuity in backward...

  • Page 25: Measurement

    25 measurement 1. Microwave output power 1-1. Standard method 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. 1) microwave power output measurement is made with the microwave oven supplied at ...

  • Page 26

    26 2-2 judgement the value of resistance should be applied to the value specified below. When value obtained is not acceptable, the switch should be replaced or adjusted again. 3. Microwave leakage test 3-1. Warning 1) do not place your hands into any suspected microwave leakage field unless the saf...

  • Page 27: Component Test Procedure

    27 component test procedure 1. High voltage is present at the high voltage terminal of the high voltage transformer during any cook cycle. 2. It is neither necessary not advisable to attempt measurement of the high voltage. 3. Defore touching any oven components or wiring, always unplug the oven fro...

  • Page 28: Wiring Diagram

    28 wiring diagram.

  • Page 29: Schematic Diagrams

    29 schematic diagrams idle condition microwave cooking condition.

  • Page 30

    30 grill cooking condition simultaneous heating cooking condition.

  • Page 31: Wiring Diagram (Germany)

    31 wiring diagram (germany).

  • Page 32: Schematic Diagrams(Germany)

    32 schematic diagrams(germany) idle condition microwave cooking condition.

  • Page 33

    33 grill cooking condition combi cooking condition.

  • Page 34: Exploded View

    Exploded view.

  • Page 36

    35 no. Part code part name description q’ty remark f2 3516103700 cavity weld as kog-8415 Øs 1 f5 3512504800 guide wave sa1d-80 0.5t 1 f6 3510602500 bracket magnetron secc 1.2t 1 f7 3511401500 cover wave guide mica 0.35t 1 f8 7113400814 screw tapping t1 bin 4x8 mfni 2 f9 3512800800 heater 1r07817 230...

  • Page 37: Operationg

    36 operationg no. Part code part name description q’ty remark f40 3518902800 thermostat 130/120 h pw-2n 1 f41 7121400811 screw tapping t2s pan 4x8 mfzn 1 f42 3512505000 guide wind p.P 1 f43 3963512910 motor shaded pole 230v 25w mw15ca-k01 1 3963512900 oem-15dwc2-a02 sub f44 7124402511 screw tapping ...