Daewoo KOG-37DP0S Service Manual - Installation

Other manuals for KOG-37DP0S: Operating Instructions Manual

Summary of KOG-37DP0S

  • Page 1

    Service manual microwave oven model : kog-37dp0s kog-37fp0s daewoo electronics co., ltd. S/m no. : g37dp0s001.

  • Page 2

    1 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 micro-wa...

  • Page 3: Safety and Precautions

    2 safety and precautions 1.For safe operation 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 train...

  • Page 4: Specifications

    3 model kog-37dp0s power supply 230v-50hz, single phase with earthing power microwave 1200w consumption grill 1050w combination 2200w microwave energy output 800w microwave frequency 2450mhz outside dimensions (w x h x d) 465x279x342mm (18.3x11.0x13.5 in.) cavity dimensions (w x h x d) 290x220x306mm...

  • Page 5: External Views

    4 1. Outer dimension (1) kog-37dp0s (2) kog-37fp0s external views.

  • Page 6

    5 1 2 3 4 5 6 7 8 9 0 q w 1. Door seal - door seal maintains the microwave energy within the oven cavity and prevents microwave leakage. 2. Reflector (insulator heater) 3. Heating element 4. Oven cavity 5. Safety interlock system 6. Door release button - by pushing this button the latch system cut o...

  • Page 7

    6 m/w kitchen timer stop/clear start clock grill combi grill 1. Small piece 2. Big piece croissant kog-37dp auto def. Grill combi hight low warm timer g 1 weight 2 3 chicken piece frozen pizza combi 10s. 1min. 1m. 10min. 10m. 1hour r t y u p d e a f s o i 13. Display - cooking time, power level, ind...

  • Page 8: Installation

    7 1. Steady, flat location this microwave oven should be set on a steady, flat surface. This microwave oven is designed for counter top use only. 2. Leave space behind and side all air vents shouls be kept a clearance. If all vents are covered during operation, the oven may overheat and, eventually,...

  • Page 9: Operations and Functions

    8 8 1. Connect the mains lead to an electrical socket-outlet. 2. After placing the food in a suitable utensil, open the oven door and put it on the glass turntable, glass turntable must always be in place during cooking. 3. Close the door securely. 4. When the oven door is opened, the light turns of...

  • Page 10: Disassembly and Assembly

    9 9 cautions to be observed when trouble shooting. Unlike many other appliances, the microwave oven is a high-voltage, high-current equipment. It is completely safety during normal operation. However, carelessness in servicing the oven can result in an electric shock or possible danger from a short ...

  • Page 11

    10 1. To remove cabinet. 1) remove three screws on cabinet back. 2) push the cabinet backward. 2. To remove door assembly. 1) remove a screw 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 ass...

  • Page 12

    11 3. To remove door parts door assembly kog-37dp0s: 3511714420 kog-37fp0s: 3511714450 ref no. Part code part name description q’ty remark a01 3512203880 frame door pp si83c 1 kog-37dp 3512205200 frame door pp si83c 1 kog-37fp a02 3517007300 barrier-screen*0 pet t0.125 1 a03 3515204100 stopper singe...

  • Page 13

    12 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 ...

  • Page 14

    13 5. To 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 membra...

  • Page 15

    14 14 note : never install the magnetron without the metallic gasket plate which is packed with each magnetron to prevent microwave leakage. Whenever repair work is carried out on magnetron, check the microwave leakage. It shall not exceed 4mw/cm 2 for a fully assembled oven with door normally close...

  • Page 16

    15 8. To remove fan motor assembly. (1) remove a screws for earthing (2) remove the noise filter from the wind guide. (3) remove a screw which secure the wind guide assembly. (4) draw forward the wind guide assembly. (5) pull the fan from the motor shaft. (6) remove two screws which secure the motor...

  • Page 17

    16 16 10. To remove tray motor. (1) remove the coupler in the cavity. (2) turn the set upside down. (3) cut the tray motor cover part from the base plate. (4) remove the tray motor cover. (5) remove a screw which secure the tray motor. (6) remove the tray motor. (7) reverse the above steps for reass...

  • Page 18

    17 17 12. To remove heater parts. Ref.No part code part name description qty remark c01 7392500008 nut hex 6n-2-5 sus 1 c02 3515000600 spacer insulator *i c3771bd 2 c03 3513301100 insulator heater spp t0.8 1 c04 3512803400 heater 230v 1000w 1r67994001 1 c05 7002500613 screw machine trs 5x6 mfcr 1 c0...

  • Page 19

    18 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 h...

  • Page 20: Trouble Shooting Guide

    19 following the procedure below to check if the oven is defective or not. 1) check earthing 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, fuse or high voltage transformer, disconnect one ...

  • Page 21

    20 20 condition check check continuity of magnetron defective magnetron result no continuity cause remedy replace outlet has proper voltage fuse does not blow. Condition check check continuity of primary interlock switch malfunction of primary interlock switch result no continuity cause remedy adjus...

  • Page 22

    21 condition check check continuity of high voltage fuse result no continuity check continuity if high voltage capacitor terminals with wires removed replace high voltage fuse continuity cause defective high voltage transformer remedy replace no microwave oscillation check continuity of high voltage...

  • Page 23

    22 22 (trouble 4) the following visual conditions inditions 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) " 88:88" does not...

  • Page 24: Measurement and Test

    23 1. Measurement of the microwave power output microwave output power can be checked by indirectly mmeasuring 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 rat...

  • Page 25

    24 2. Microwave radiation test procedure 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 600 cc glass beaker with an inside diameter of approx. 95 mm(3.5 in.). 3. Place it at ...

  • Page 26

    25 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 ...

  • Page 27: Wiring Diagram

    26 wiring diagram.

  • Page 28: Printed Circuit Board

    27 1. Circuit check procedure 1. Low voltage transformer check the low voltage transformer is located on the p.C.B. Measuring condition: input voltage: 230v / frequency: 50hz 2. Voltage check - key check point - check method note 1. Refer to ciruit diagram (point 4). 2. Secondary side voltage of the...

  • Page 29

    28 mesurement point mp1 mp2.

  • Page 30

    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 m...

  • Page 31

    30 2. P.C.B. Circuit diagram.

  • Page 32

    31 31 no name symbol specification part code q'ty 1 buzzer bz1 bm-20k 3515600100 1 2 c array ca1 6p(5) 1000pf m 50v cn5xb-102m 1 3 capacitor elec ec1 rss 100mf 16v cexf1c101v 1 4 capacitor elec ec2 25v rss 1000mf cexf1e102v 1 5 connector wafer cn1 yw396-02v 3519150520 1 6 connector film cn2 fcz 254-...

  • Page 33: Exploded View and Parts List

    32 1. Door assembly refer to disassembly and assembly 2. Control panel assembly refer to disassembly and assembly 3. Total assembly exploded view and parts list.

  • Page 34

    33 ref no part code part name description q'ty a00 door as refer to disassembly and assembly 1 b00 control panel as refer to disassembly and assembly 1 c00 3513302700 insulator heater as refer to disassembly and assembly 1 f01 3510805300 cabinet as pcm t0.5 1 f02 7112401011 screw tapping t1 trs 4*10...

  • Page 35

    34 ref no part code part name description q'ty f32 7112401011 screw tapping t1 trs 4*10 mfzn 5 f33 3512100900 foot pp dasf-130 2 f34 7272400811 taptite screw tt3 trs 4x8 mfzn 1 f35 3515201101 stopper hinge *u scp-1 t2.5 1 f36 4415a17352 sw micro vp-533a-of spno #187 200g 1 f37 4415a66910 sw micro vp...

  • Page 36

    Daewoo electronics co., ltd. 686, ahyeon-dong mapo-gu seoul, korea c.P.O. Box 8003 seoul, korea telex: dwelec k28177-8 cable: “daewooelec” printed date: jul. 2001.