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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-

wave source, and make repairs as necessary: (1) Interlock operation, (2) Proper door closing, (3) Seal and
sealing surfaces (arcing, wear, and other damage), (4) Damage to or loosening of hinges and latches, (5)
Evidence of dropping or abuse.

(c) Before turning on power to the microwave oven for any service test or inspection within the microwave gen-

erating compartments, check the magnetron, wave guide or transmission line, and cavity for proper align-
ment, integrity, and connections.

(d) Any defective or misadjusted components in the interlock, 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 microwave leakage check to verify compliance with the Federal performance standard should be per-

formed on each oven prior to release to the owner.

TABLE OF CONTENTS

SAFETY AND PRECAUTIONS ...........................................................................................................................................2

1. FOR SAFE OPERATION ..................................................................................................................................2

2. FOR SAFE SERVICE PROCEDURES .............................................................................................................2

SPECIFICATIONS ...............................................................................................................................................................3

EXTERNAL VIEW................................................................................................................................................................4

1. OUTER DIMENSION.........................................................................................................................................4

2. FEATURE DIAGRAM ........................................................................................................................................5

3. CONTROL PANEL ............................................................................................................................................6

INSTALLATION ...................................................................................................................................................................7

OPERATIONS AND FUNCTIONS.......................................................................................................................................8

DISASSEMBLY AND ASSEMBLY......................................................................................................................................9

INTERLOCK MECHANISM AND ADJUSTMENT.............................................................................................................16

TROUBLE SHOOTING GUIDE .........................................................................................................................................17

MEASUREMENT AND TEST ............................................................................................................................................21

1. MEASUREMENT OF THE MICROWAVE POWER OUTPUT ........................................................................21

2. MICROWAVE RADIATION TEST ...................................................................................................................22

3. COMPONENT TEST PROCEDURE ...............................................................................................................23

WIRING DIAGRAM............................................................................................................................................................24

PRINTED CIRCUIT BOARD..............................................................................................................................................25

1. CIRCUIT CHECK PROCEDURE ....................................................................................................................25

2. PCB CIRCUIT DIAGRAM................................................................................................................................28

3. P.C.B. LOCATION NO ....................................................................................................................................29

EXPLODED VIEW AND PARTS LIST...............................................................................................................................31

1. DOOR ASSEMBLY .........................................................................................................................................31

2. CONTROL PANEL ASSEMBLY......................................................................................................................31

3. TOTAL ASSEMBLY.........................................................................................................................................31

Содержание KOR-6NDB

Страница 1: ...Service Manual Model KOR 6NDB Microwave Oven Jan 2006 S M No R6NDB3A001...

Страница 2: ...k 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 microwa...

Страница 3: ...ing the oven 2 If any certified oven unit is found to servicing a microwave emission check should be performed prior to servicing the oven a inform the manufacturer importer or assembler b repair the...

Страница 4: ...700W MICROWAVE FREQUENCY 2450MHz OUTSIDE DIMENSIONS W X H X D 465 x 279 x 323 mm 18 3 x 11 0 x 12 7 in CAVITY DIMENSIONS W X H X D 301 x 219 x 283 mm 11 8 x 8 6 x 11 1 in NET WEIGHT Approx 11 5 kg 25...

Страница 5: ...4 EXTERNAL VIEW 1 OUTER DIMENSION 323 465 279...

Страница 6: ...outlet from splashes of cooking foods 5 OVEN LAMP Automatically turns on during oven operating 6 SAFETY INTERLOCK SYSTEM 7 CONTROL PANEL 8 GLASS COOKING TRAY Made of special heat resistant glass The...

Страница 7: ...fic quantities of food 4 More Used to add time to cooking 5 Less Used to remove time from cooking 6 Power Used to set power level 7 Def Used to defrost foods for time 8 Clock Used to set clock 9 Stop...

Страница 8: ...approximately 10 amperes 120Volts 60Hz grounded outlet Power supply cord is about 0 8 meters long 1 A short power supply cord is provided to reduce the risks resulting from becoming entangled in or t...

Страница 9: ...n operatiion the oven stops cooking and all information retained To erase all information except the present time touch the CANCEL button once more If the oven door is opened during the oven operation...

Страница 10: ...epair work 2 Warning about the electric charge in the high voltage capacitor For about 30 seconds after the operation stopped and electric charge remains in the high voltage capacitor When replacing o...

Страница 11: ...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...

Страница 12: ...en outer from door frame 6 Reverse the above steps for reassembly REF NO PART CODE PART NAME DESCRIPTION Q TY REMARK A01 3512203880 FRAME DOOR PP SI83C 1 A02 3517007300 BARRIER SCREEN 0 PET T0 125 1 A...

Страница 13: ...ge 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 the door to con...

Страница 14: ...B assembly 5 Detach membrane from the control panel 6 Remove door open button and button spring from the control panel 7 Reverse the above steps for reassembly REF NO PART CODE PART NAME DESCRIPTION Q...

Страница 15: ...ge circuit wiring 7 To remove magnetron 1 Remove a screw which secure the magnetron 2 Remove the magnetron 3 Reverse the above steps for reassembly NOTE Never install the magnetron without the metalli...

Страница 16: ...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...

Страница 17: ...losed the hook pushes the lock lever downward The lock lever presses the button of the interlock monitor switch to bring it under OFF condition and presses the button of the secondary interlock switch...

Страница 18: ...ted 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 switch co...

Страница 19: ...place Connect megger leads to mag netron terminal and magnetron body Continuity Defective mag netron Replace Check resistance of primary and secondary coil of high voltage transformer 0 or Defective h...

Страница 20: ...ity Adjust or replace Check D C voltage being sup plied to RELAY RY2 coil Defective touch control circuit 0 V Replace Faulty contacts of RELAY RY2 or open relay coil Approx 12 VDC Replace Display do n...

Страница 21: ...jumps in time while counting down 19 Display counts down noticeably too fast while cooking 10 Display does not show the time of day when cancel button is touched 11 Oven lamp and turntable motor do no...

Страница 22: ...ssel 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 foll...

Страница 23: ...net 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 i...

Страница 24: ...er 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 s...

Страница 25: ...24 WIRING DIAGRAM...

Страница 26: ...NOTE Each measure point must be measured with GND point NOTE 1 Refer to Circuit Diagram point 4 2 Secondary side voltage of the low voltage transformer changes in proportion to fluctuation of power so...

Страница 27: ...26 MP1 MP2 GND...

Страница 28: ...igital clock does not operate properly Refer to Circuit Diagram If clock does not keep exact time you must check resistor R20 and zener diode ZD2 STATE POINT A B RELAY 2 ON 5VDC GND RELAY 2 OFF GND 12...

Страница 29: ...28 2 PCB CIRCUIT DIAGRAM...

Страница 30: ...KTA1266Y AUTO 1015Y TZTA1266Y 1 18 TR Q09 11 KRC106M AUTO TZRC106M 3 19 R ARRAY RA1 8P 7 1 8 100K OHM J RA 88X104J 1 20 R ARRAY RA2 7P 6 1 8 100K OHM J RA 87X104J 1 21 PCB MAIN BOARD M158 1 3514315411...

Страница 31: ...TR Q06 KTA1266Y AUTO 1015Y TZTA1266Y 1 18 TR Q09 11 KRC106M AUTO TZRC106M 3 19 R ARRAY RA1 8P 7 1 8 100K OHM J RA 88X104J 1 20 R ARRAY RA2 7P 6 1 8 100K OHM J RA 87X104J 1 21 PCB MAIN BOARD M158 1 351...

Страница 32: ...31 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...

Страница 33: ...4X8 MFZN 1 F18 3513003200 HOLDER HV CAPACITOR SECC T0 6 1 F19 3518301501 CAPACITOR HV 2100VAC 0 77UF 187 1 F20 3518400900 DIODE HV AS HVR 1X 30B 187 1 F21 3518118291 TRANS HV DY R70A0 63T A 1 F22 351...

Страница 34: ...S M NO R6NDB3A001 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 Jan 2006...

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