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Daewoo KOR-1P557S, Service Manual, Page: 5 / 35

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Daewoo KOR-1P557S Service Manual Download Page 5

4

3

5

4

7

1

6

2

1

1

Safety interlock system

2

2

Door viewing screen - Allows viewing of food. The screen is designed so that light can pass through, but not the

microwave.

3

3

Door hook - When the door is closed, it will automatically shut off. If the door is opened while the oven is

operating, the automatically shut off.

4

4

Oven cavity

5

5

Door seal - Door seal maintains the microwave energy within the oven cavity and prevents microwave leakage.

6

6

Plate tray - Made of special heat resistant glass. Food in a proper receptacle is placed on this tray for cooking.

7

7

Stirrer cover - This is located on the ceiling with the stirrer fan.

2. FEATURE DIAGRAM

Summary of Contents for KOR-1P557S

Page 1: ... No R1P5C7S001 http svc dwe co kr Jul 2003 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 PPL Parts Price List in Service Information Center http svc dwe co kr ...

Page 2: ... 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 performed on each oven prior to release to the owner TABLE OF CONTENTS SAFE...

Page 3: ...turer importer or assembler b repair the unit at no cost to the owner c attempt to ascertain the cause of the excessive leakage d tell the owner of the unit not to use the unit until the oven has been brought into compliance 3 If the oven operates with the door open the service person should tell the user not to operate the oven and contact the manufacturer and CDRH immediately IMPORTANT The wire ...

Page 4: ...E ENERGY OUTPUT 900W MICROWAVE FREQUENCY 2450MHz OUTSIDE DIMENSIONS W X H X D 560 x 344 x 483 mm 22 0 x 13 5 x 19 0 in CAVITY DIMENSIONS W X H X D 360 x 221 x 400 mm 14 5 x 8 7 x 15 7 in NET WEIGHT Approx 17 5 kg 38 6 Ibs TIMER 10 min Single Speed 20 min Full Power FUNCTION SELECTIONS MICROWAVE POWER SELECTIONS 5 LEVELS 4 LEVELS CAVITY VOLUME 1 2 Cu Ft SPECIFICATIONS ARE SUBJECT TO CHANGE WITHOUT ...

Page 5: ...tically shut off If the door is opened while the oven is operating the automatically shut off 4 4 Oven cavity 5 5 Door seal Door seal maintains the microwave energy within the oven cavity and prevents microwave leakage 6 6 Plate tray Made of special heat resistant glass Food in a proper receptacle is placed on this tray for cooking 7 7 Stirrer cover This is located on the ceiling with the stirrer ...

Page 6: ...ng data 3 3 Defrost Used to defrost foods for time 4 4 Time Set Pad Used to set the cooking time or cook preprogrammed cooks 5 5 Check Used to check cooking data 6 6 Double Quantity Used to extend programmed cooking time 7 7 Power Used to set power level 8 8 Stop Clear Used to stop the oven operation or to delete the cooking data 9 9 Start 30sec Used to start the oven and also used to set a reheat...

Page 7: ...l type which if damaged must be repaired with cable of same type Such a cable can be purchased from DAEWOO and must be installed by Qualified Person 6 Examine the oven after unpacking for any damage such as A misaligned door broken door or a dent in cavity If any of the above are visible DO NOT INSTALL and notify dealer immediately 7 Do not operate the oven if it is colder than room temperature Th...

Page 8: ...pad is touched during the oven operation the oven stops cooking and all information retained To erase all information touch the STOP CLEAR pad once more If the oven door is opened during the oven operation all information is retained 9 If the START pad is touched and the oven does not operate check the area between the door and door is closed securely The oven will not start cooking until the door...

Page 9: ...the time during cooking simply adjust the timer to the desired time 7 When the timer reaches zero a bell will ring and the unit will turn off Oven light turns off If additional cooking time is needed and the door is closed the oven will automatically start when the timer is reset Variable power cooking ON and OFF cycle time of mechanical V P C switch is 30 seconds When the V P C knob is set to the...

Page 10: ...g repair 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 or checking parts short between oven chassis and the negative high terminal of the high voltage capacitor by using a properly insulated screwdriver to discharge 4 When the 12A fuse is blown out due ...

Page 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 door assembly perform a check of correct alignment with the hinge and cavity front plate ...

Page 12: ...05 3516602100 DOOR PLATE SBHG 1A T0 7 1 A06 3517007600 BARRIER SCREEN I PE T0 1 1 A07 3512302310 GASKET DOOR LUPOL2300 1 A08 7122401211 SCREW TAPPING T2S TRS 4 12 MFZN 2 A09 3513101200 HOOK POM 1 A10 3515101800 SPRING HOOK PW1 1 A11 3512604700 HANDLE DOOR AL 1 A12 3515204900 STOPPER HINGE T AS KOC 1B0K0S 1 A11 A01 A02 A03 A08 A07 A06 A05 A12 A04 A09 A10 Door Assembly KOR 1P557S 3511718610 1 Remove...

Page 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 contact the door seal to oven front surface Tighten two screws A B NOTE A small gap may be acceptable if the microwave leakage does not exceed 4mW cm2 ...

Page 14: ...51852400 SWITCH MEMBRANE KOR 1P5CBA 1 B03 3516728510 CONTROL PANEL ABS AF 348 VT 0826 1 B04 PKMPMSAJ10 PCB AS KOR 1P5K 1 B05 7122401211 SCREW TAPPING T2S TRS 4X12 MFZN 4 1 Remove the screw which secure the control panel push up two snap fits and draw forward the control panel assembly 2 Remove four screws which secure the PCB assembly to control panel 3 Disconnect membrane tail from the connector ...

Page 15: ...ich secure the V P C coupler 7 Pull out the V P C coupler V P C knob and flat spring from the control panel 8 Reverse the above steps for reassembly REF NO PART CODE PART NAME DESCRIPTION Q TY REMARK B01 3511610410 DECORATOR C PANEL SUS T0 4 1 B02 3511611400 DECORATOR FILM PC T0 5 1 B03 3513407420 KNOB VPC ABS AF 345 VE 0855 COATING 1 B04 3513407510 KNOB TIMER ABS AF 345 VE 0855 COATING 1 B05 3516...

Page 16: ...rmally closed Metalic gasket plate Cooling fin Filament terminal MAGNETRON Stub Magnetron antenna 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 the H V diode from the capacitor holder 3 Reverse the above steps for reassembly High voltage circuit wiring 7 To remove magnetron 1 Remove a screw which secu...

Page 17: ...e 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 reasembly 9 To remove H V transformer 1 Remove four screws holding the H V transformer 2 Remove the H V transformer 3 Reverse the above steps for reassembly ...

Page 18: ... 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 ON condition 3 Adjustment steps a Loosen the one mounting screw b Adjust interlock switch assembly position c Make sure that lock lever moves smoothly after adjustment is completed d Tighten completely two mounti...

Page 19: ...onnection 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 primary interlock switch contact with door partially open until interlock monitor switch contact close Malfunction of interlock monitor switch Shorted contacts of primary interlock switch RESULT Continuity No Continuity Repl...

Page 20: ...t 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 not show countdown Malfunction of secondary interlock switch Replace Check continuity of power supply cord Open power supply cord No Continuity Replace Defective touch control circuit Normal Replace NOTE 1 All t...

Page 21: ... body Continuity Defective magnetron Replace Check resistance of primary and secondary coil of high voltage transformer 0 Ω or Defective high voltage transformer Replace Check continuity of magnetron with wires removed No Continuity Defective magnetron Replace Check continuity of filament terminal of high voltage transformer No Continuity Defective high voltage transformer Replace Check D C voltag...

Page 22: ...8 Display obviously 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 stop although cooking is finished Check if the RELAY 2 contacts close if they are close replace touch control circuit NOTE Before following the particular steps listed above in the tr...

Page 23: ...the 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 following Heating time is measured while the microwave generator is operating at full power The filament heat up time for magnetron is not included 6 The initial and final temperature of water is se...

Page 24: ...abinet 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 is unknown move the probe more slowly 4 When measuring near a corner of the door keep the probe perpendicular to the areas making sure the probe end at the base of the cone does not get closer than ...

Page 25: ...eter 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 should be used to check the front back resistance of the diode otherwise an infinite resistance may be read in both directions A normal diode s resistance will be infinite in one direction and severa...

Page 26: ...25 WIRING DIAGRAM 1 KOR 1P5C7S ...

Page 27: ...26 2 KOR 1P557S ...

Page 28: ...ansformer 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 measured with GND points Terminal Voltage 6 8 9 10 LOAD DC 12V AC 3 4V NO LOAD AC 25 8V AC 4 0V NO CHECK POINT REMARK 1 IC1 PIN 63 64 5VDC 2 IC1 PIN 38 3 IC1 PIN 33 OR 34 T 20ms 50Hz 5V 0V T 250 ns 4MHz 5V 0V NO MEA...

Page 29: ...28 MP1 MP2 Measure point ...

Page 30: ...oor is opened during operation the count down timer does not stop refer to Circuit Diagram point 1 Check method 5 When the digital clock does not operate properly refer to Circuit Diagram point 5 If clock does not keep exact time you must check resistor R26 19 transistor Q6 POINT A B STATE RELAY 2 ON 5VDC GND RELAY 2 OFF GND 12VDC POINT A B STATE RELAY 1 ON 5VDC GND RELAY 1 OFF GND 12VDC POINT A B...

Page 31: ...30 2 P C B CIRCUIT DIAGRAM ...

Page 32: ...150540 1 15 CONNECTOR WAFER CN1 YW396 02V 3519150520 1 16 CONNECTOR WAFER CN2 FCZ 254 12 441M367170 1 17 IC MICOM IC1 TMP87CM14N 4N82 13GS1P5C00 1 18 IC EEPROM IC2 BR9020 W 137N9020W 1 19 PCB MAIN M187 90X90 3514328500 1 20 R ARRAY RA2 3 RGLD4X104J RA 85X104J 2 21 R ARRAY RA1 6P 5 1 8 100K OHM J RA 86X104J 1 22 RESISTOR R8 1 6W 200 5 RD AZ201J 1 23 RESISTOR R5 9 11 13 16 23 24 1 6W 1K 5 RD AZ102J ...

Page 33: ...32 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 34: ...13 3963513010 MOTOR SHADE POLE MW15CA B01 1 F14 3512515300 GUIDE WIND PP 1 F15 3511800100 FAN PP GP20 1 F16 3518605500 LINE FILTER DWLF M07 1 F17 3518003800 MAGNETRON RM259 STUD 1 F18 3513601700 LAMP BL 240V 25W 1 F19 3513816000 LOCK PP 1 F20 3513702100 LEVER SW MICRO POM 1 F21 4415A17352 SW MICRO VP 533A OF SPNO 187 1 F22 4415A66910 SW MICRO VP 531A OF 1 F23 3518571000 SW MICRO MP101C 1 E 4415A17...

Page 35: ...S M No R1P5C7S001 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 Jul 2003 ...

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