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Daewoo KOR-1A4H, Service Manual, Page: 27 / 32

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Daewoo KOR-1A4H Service Manual Download Page 27

31

2. P.C.B. CIRCUIT DIAGRAM

VL1

4

V2:-12V

V1:-5V

3

CN3

2

1

7

LVT1

1

6

3

R12

R9

R15

ZD2

R14

Q6

R13

D6

D14

D13

EC2

R16

D12

C7

R18

CR1

R17

C4

C3

ZD1

EC1

C5

C6

CN1

BZ1

(TRAY

LAMP)

(MAGNETRON)

RY2

RY1

R19

D10

D9

D11

D.O.M SW

R8

Q10

Q9

1

2

R22

C1

R11

R23

Q11

IC1

SJ3

RA1

SJ6

SJ5

SJ4

R21

SJ2

SJ1

R20

CA1

Q2

Q1

D4

D5

Q5

Q4

D3

Q3

R5

R2

R6

R7

R1

R3

R4

f

f

7

G4

D1

CN2

D2

G5

12

G1

c

d

e

g

a

b

f

a

G2

G3

11

9

e

d

G2

c

g

e

G1

8

4

6

a

d

G4

c

g

G3

b

f

a

b

f

b

a

c

d

DP1

c

5

10

g

b

1

2

e

d

G5

e

c

d

g

e

3

f

b

a

g

R10

1

2

3

4

5

B

A

B

B

A

A

A

D15

21  GND

32  XOUT

V1

4  AIN1

V1

V1

+

-

V1

33  RESET

31  XIN

V1

+

-

V1

35  INT2

34  HOLD

1  VAREF

30  TEST

42  VCC

V2

V2

14  R63

2  VASS

13  R62

V2

V1

3  R40

41  R92

FROZEN

VEGETABLE

R53  10

R52   9

R50   7

R51   8

V1

CLEAR

STOP/

POPCORN

R43   6

R42   5

P71  16

P70  15

V1

11

10

K00  26

K01  27

K02  28

K03  29

MEAT

9

8

7

6

BEVERAGE

DEFROST

FISH

POULTRY

SPEEDY COOK

START/

PIZZA

CLOCK

COOK

AUTO

MORE(+)

VEGETABLE

FRESH

TIMER

POWER

KITCHEN

LESS(-)

FROZEN

R90  39

R91  40

R82  37

R83  38

R81  36

P22  24

P21  23

5

4

3

2

P20  22

P13  20

P12  19

P11  18

P10  17

1

V1

10SEC

1MIN

1

0MIN

PASTA

DINNER

PLATE

DISH

WARMER

43

21

0

98

7

6

5

Summary of Contents for KOR-1A4H

Page 1: ...Service Manual Model KOR 1A4H Microwave Oven MARCH 2006 S M No R1A0A0C002...

Page 2: ...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 the owner e A microwav...

Page 3: ...If the oven is operative prior to servicing a microwave emission check should be performed prior to servicing the oven 2 If any certified oven unit is found to servicing a microwave emission check sho...

Page 4: ...ION COMBINATION MICROWAVE ENERGY OUTPUT 1000W MICROWAVE FREQUENCY 2450MHz OUTSIDE DIMENSIONS W X H X D 539X300X406mm 539X300X435mm CAVITY DIMENSIONS W X H X D 354X228X373mm NET WEIGHT APPROX 15 5kg AP...

Page 5: ...ndas se salpique cuando los alimentos se cocinan 5 Sistema de sujeci n con seguro Previene que el horno funcione mientras la puerta se encuentra abierta 6 Plato de cristal Fabricado con cristal especi...

Page 6: ...ramadas para descongelar carne pollo o pescado seg n el peso 15 Potencia Bot n para establecer el nivel de potencia de cocinado 16 Descongelado Funci n para descongelar cualquier tipo de alimentos med...

Page 7: ...hot air steam or splash when choosing a place to position it or the insulation might be adversely affected and breakdowns occur 5 Power supply Check your local power source This oven requires a curren...

Page 8: ...P CLEAR pad is touched during the oven operation the oven stops cooking and all information retained To erase all information except the present time touch the STOP CLEAR pad once more If the oven doo...

Page 9: ...beginning repair work 2 Warning about the electric charge in the high voltage capacitor For about 30 seconds after the operation has stopped electric charge remains in the high voltage capacitor When...

Page 10: ...ard 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 doo...

Page 11: ...OOR T STS304 T0 6 HAIR LINE 1 A10 3512603300 HANDLE DOOR U ABS XR 401 H 2938 1 A11 7122401211 SCREW TAPPING T2S TRS 4 12 MFZN 2 A12 3517005800 BARRIER SCREEN I PETP T0 1 1 A13 3512301900 GASKET DOOR P...

Page 12: ...then push the door to contact the door seal to oven front surface Tighten two screws 3 To reduce gap located on part C Loosen a screw on interlock switch assembly located top of oven body Draw the int...

Page 13: ...KCPSWXR00 PCB AS KOR 1A0A0C 1 B05 7122401211 SCREW TAPPING T2S TRS 4 12 MFZN 3 1 Remove the screw which secure the control panel push up two snap fits and draw forward the control panel assembly 2 Rem...

Page 14: ...2 for a fully assembled oven with door normally closed 6 To 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 t...

Page 15: ...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 To remove H V transformer...

Page 16: ...es the lock lever downward The lock lever presses the button of the interlock monitor switch to bring it under NO condition and presses the button of the secondary interlock switch to bring it under O...

Page 17: ...nection of the terminals and power cord before check the parts listed below CONDITION CHECK Check continuity of interlock monitor switch with door closed Check continuity of of primary interlock switc...

Page 18: ...uity Adjust or replace Check D C voltage being supplied to RELAY RY2 coil Defective touch control circuit 0 V Replace Faulty contacts of RELAY RY2 or open relay coil Approx 15 VDC Replace Display do n...

Page 19: ...body Continuity Defective magnetron Replace Check resistance of primary and secondary coil of high voltage transformer 0 or Defective high voltage transformer Replace Check continuity of magnetron wi...

Page 20: ...jumps in time while counting down 9 Display counts down noticeable too fast while cooking 10 Display does not show the time of day when clear pad is touched 11 Oven lamp and turntable motor do not sto...

Page 21: ...e 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 Heating time should be exactly A seconds Refer to table as...

Page 22: ...binet door seem door viewing screen the exhaust air vents and the suction air vents 3 Measuring should be in a counter clockwise direction at a rate of 1 in sec If the leakage of the cabinet door seem...

Page 23: ...r set on the highest resistance scale measure the resistance across the diode terminals Reverse the meter leads and again observe the resistance reading Meter with 6V 9V or higher voltage batteries sh...

Page 24: ...27 WIRING DIAGRAM H V H V FUSE FUSE...

Page 25: ...ltage transformer changes in proportion to fluctuation of power source voltage 3 The allowable tolerance of the secondary voltage is within 5 of nominal voltage NOTE Each measure point must be measure...

Page 26: ...the door is opened during operation the count down timer does not stop refer to Circuit Diagram point 1 Check method 6 When the digital clock does not operate properly refer to Circuit Diagram point...

Page 27: ...1 c 5 10 g b 1 2 e d G5 e c d g e 3 f b a g R10 1 2 3 4 5 B A B B A A A D15 21 GND 32 XOUT V1 4 AIN1 V1 V1 V1 33 RESET 31 XIN V1 V1 35 INT2 34 HOLD 1 VAREF 30 TEST 42 VCC V2 V2 14 R63 2 VASS 13 R62 V2...

Page 28: ...Z102J 4 17 RESISTOR R9 1 6W 20K J RD AZ203J 1 18 RESISTOR R12 23 1 6W 4 7K J RD AZ472J 2 18 RESISTOR R11 20 21 1 6W 100K J RD AZ204J 3 19 RESISTOR R13 1 6W 200 J RD AZ201J 1 20 RESISTOR R15 16 1 6W 10...

Page 29: ...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...

Page 30: ...E 250V15A 1 F10 3518606100 NOISE FILTER DWLF M13 1 F11 7112401011 SCREW TAPPING T1 TRS 4 10 MFZN 1 F12 7121403011 SCREW TAPPING T2S TRS 4 30 MFZN 2 F13 3963821600 MOTOR SHADED POLE 120V 60HZ MW10XA M0...

Page 31: ...OM BLACK KOR 1A4H 1 3513811700 LOCK POM BLACK KOR 1A0A 1A6A 1 F36 3513601500 LAMP BL 125V 25W T25 C5A H187 1 F37 7121400611 SCREW TAPPING T2S PAN 4X6 MFZN 1 F38 3966310200 MOTOR SYNCRO 120V 2W GM 16 1...

Page 32: ...S M NO R1A0A0C002 DAEWOO ELECTRONICS CORP 686 AHYEON DONG MAPO GU SEOUL KOREA C P O BOX 8003 SEOUL KOREA TELEX DWELEC K28177 8 CABLE DAEWOOELEC PRINTED DATE Nov 2003...

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