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  5. Service Manual

Daewoo KOR-162G0A Service Manual - External View

Summary of KOR-162G0A

  • Page 1

    Service manual microwave oven model: kor-162g0a kor-162h0a kor-163g0a kor-163h0a daewoo electronics co., ltd. Http://svc.Dwe.Co.Kr ✔ 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,ple...

  • Page 2: Table of Contents

    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 microwav...

  • Page 3: Safety and Precautions

    Safety and precautions 2 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 energy. 1. Fo...

  • Page 4: Specifications

    3 specifications model kor-162g/h, 163g/h0a power supply 120v~60hz, single phase with earthing microwave 1400 w power grill consumption combination microwave energy output 1000w microwave frequency 2450mhz outside dimensions (w x h x d) 589x339x464mm (23.2x13.3x18.3 in.) cavity dimensions (w x h x d...

  • Page 5: External View

    4 external view 1. Outer dimension kor-162g/h0a kor-163g/h0a.

  • 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 f...

  • Page 7

    6 microwave oven range kor-162g 1. Bread 2. Soup 3. Baked potato 4. Fresh vegetable 5. Frozen vegetable m/w def timer lock lb more less meat power 1 fish poultry auto defrost defrost kitchen timer clock 2 3 4 5 6 7 8 9 0 stop/clear start/ speedy cook popcorn frozen pizza dinner plate auto cook 2 5 q...

  • Page 8

    7 beverage microwave oven range kor-162h m/w def timer lock lb fresh vegetable popcorn more less meat power 1 fish poultry auto defrost frozen pizza defrost kitchen timer clock 2 3 4 5 6 7 8 9 0 frozen vegetable dinner plate stop/clear start/ speedy cook 2 5 0 1 w q 9 8 7 4 6 3 1. Time set pad - use...

  • Page 9

    8 microwave oven range kor-163g 1. Bread 2. Soup 3. Baked potato 4. Fresh vegetable 5. Frozen vegetable m/w def timer lock lb more less meat power fish poultry auto defrost stop/clear start/ speedy cook popcorn frozen pizza dinner plate auto cook defrost 1 2 3 4 5 6 7 8 9 0 kitchen timer clock 2 5 q...

  • Page 10

    9 beverage microwave oven range kor-163h m/w def timer lock lb fresh vegetable popcorn more less meat power fish poultry auto defrost frozen pizza defrost kitchen timer clock frozen vegetable dinner plate stop/clear start/ speedy cook 1 2 3 4 5 6 7 8 9 0 2 5 0 1 w q 9 8 7 4 6 3 1. Time set pad - use...

  • Page 11: Installation

    10 installation 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 overheat and, eventually, cause oven failure. 3. Away from radio and ...

  • Page 12: Operations and Functions

    11 operations 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. The oven door can be opened at any t...

  • Page 13: Disassembly and Assembly

    12 disassembly and assembly - 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 possibl...

  • Page 14

    13 1. To remove cabinet 1) remove three screws on cabinet back. 2) push the cabinet backward. 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...

  • Page 15

    14 3. To remove door parts. 1) remove the gasket door from door plate. 2) remove the barrier screen inner from door plate. 3) remove the door frame from door plate. 4) remove the stopper hinge top from door plate. 5) remove the spring and the hook. 6) remove the barrier screen outer from door frame....

  • Page 16

    15 4. Method to reduce the gap between the door seal and the oven front surface. (1) to reduce gap located on part ‘a’ • loosen two 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...

  • Page 17

    16 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 18

    17 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 closed. ...

  • Page 19

    18 8. To 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 reasemb...

  • Page 20

    19 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 sw...

  • Page 21: Trouble Shooting Guide

    20 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, fuse or high voltage tran...

  • Page 22

    21 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 adjust o...

  • Page 23

    22 (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 transformer remedy replace no microwave oscillation check continuity of high voltage rectifier...

  • Page 24

    23 (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) " :0" does not displ...

  • Page 25: Measurement and Test

    24 measurement and test 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...

  • Page 26

    25 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 27

    26 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 28: Wiring Diagram

    27 wiring diagram.

  • Page 29: Printed Circuit Board

    28 printed circuit board 1. Circuit check procedure 1. Low voltage transformer check the low voltage transformer is located on the p.C.B. Measuring condition: input voltage: 120v / frequency: 60hz 2. Voltage check - key check point - check method note 1. Refer to ciruit diagram (point 4). 2. Seconda...

  • Page 30

    29 mp1 mp2 mesurement point.

  • Page 31

    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...

  • Page 32

    31 2. P.C.B. Circuit diagram.

  • 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 16v rss 100µf cexf1c101v 1 4 cpapcitor elec ec2 25v rss 1000µf cexf1e102v 1 5 connector wafer cn1 yw396-02av 3519150520 1 6 connector wafer cn2 yw396-05av 3...

  • Page 34: Exploded View and Parts List

    33 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 kor-162g/h0a.

  • Page 35

    34 1. Door assembly refer to disassembly and assembly 2. Control panel assembly refer to disassembly and assembly 3. Total assembly kor-163g/h0a.

  • Page 36

    35 ref no part code part name description q'ty a00 3511710420 door as kor-163j0a 1 3511710410 door as kor-162j0a 1 pkcpswkl00 control panel as kor-163g0a 1 b00 pkcpswkm00 control panel as kor-163h0a 1 pkcpswkg00 control panel as kor-162g0a 1 pkcpswkk00 control panel as kor-162h0a 1 f01 3512802400 ca...

  • Page 37

    36 ref no part code part name description q'ty f31 4415a17352 sw micro vp-533a-of 1 f32 4415a66910 sw micro vp-531a-of 1 f33 4415a17352 sw micro vp-533a-of 1 f34 4415a66910 sw micro vp-531a-of 1 f35 3513701300 lever lock pom 1 f36 3513807600 lock pom 1 f37 3513601500 lamp bl 125v 25w t25 1 f38 71214...

  • Page 39

    S/m no.:r162g0a001 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 date: aug,1998.