Samsung M197DFR Service Manual
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Samsung M197DFR Service Manual

Samsung M197DFR Service Manual

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MICROWAVE OVEN
M197DFR
SERVICE
Manual
MICROWAVE OVEN
CONTENTS
BWT

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Summary of Contents for Samsung M197DFR

  • Page 1: Table Of Contents

    MICROWAVE OVEN M197DFR SERVICE Manual MICROWAVE OVEN CONTENTS 1. Precaution 2. Specifications 3. Operating Instructions 4. Disassembly and Reassembly 5. Alignment and Adjustments 6. Troubleshooting 7. Exploded Views and Parts List 8. PCB Diagrams 9. Schematic Diagrams...
  • Page 2 This Service Manual is a property of Samsung Electronics Samsung Electronics Co., Ltd. May 2004 Co.,Ltd. Any unauthorized use of Manual can be punished under Printed in Korea applicable International and/or domestic law Code No. : DE68-03517A...
  • Page 3 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 (c) Before turning on microwave power for operated with the door open. any service test or inspection within the (b) Make the following safety checks on all microwave generating compartments, ovens to be serviced before activating the...

  • Page 4: Precaution

    1. Precaution Follow these special safety precautions. Although the microwave oven is completely safe during ordinary use, repair work can be extremely hazardous due to possible exposure to microwave radiation, as well as potentially lethal high voltages and currents. 1-1 Safety precautions ( 1.
  • Page 5 1-2 Special Servicing Precautions (Continued) 17. When checking the continuity of the witches or transformer, always make sure that the power is OFF, and one of the lead wires is disconnected. 18. Components that are critical for safety are indi- cated in the circuit diagram by shading, 19.

  • Page 6: Specifications

    2. Specifi cations 2-1 Table of Specifi cations TIMER 99 MINUTES POWER SOURCE 230V 50Hz, AC RADIO FRE. 87.5 MHz~108.0 MHz POWER CONSUMPTION MICROWAVE : 1,500W OUTPUT POWER FROM 100 TO 1000W (IEC-705 TEST PROCEDURE) OPERATING FREQUENCY 2,450MHz MAGNETRON OM75PH(31) COOLING METHOD COOLING FAN MOTOR OUTSIDE DIMENSIONS...

  • Page 7: Operating Instructions

    3. Operating Instructions 3-1 Control Panel 3-2 Features & External Views DOOR LATCHES VENTILATION HOLES LIGHT HANDLE TURNTABLE ROLLER RING SAFETY INTERLOCK HOLES DOOR COUPLER 517mm 420mm - 4 -...

  • Page 8: Disassembly And Reassembly

    4. Disassembly and Reassembly 4-1 Replacement of Magnetron, Motor Assembly and Lamp Remove the magnetron including the shield case, permanent magnet, choke coils and capacitors (all of which are contained in one assembly). 1. Disconnect all lead wires from the magnetron and lamp. 2.
  • Page 9 4-3 Replacement of Door Assembly 4-3-1 Removal of Door Assembly Insert flat screwdriver into the gap between Door “A” and Door “C” to remove Door “C”. Be careful when handling Door “C” because it is fragile. Door "A" Then remove the door assembly. Door "C"...
  • Page 10 4-3-4 Reassembly Test After replacement of the defective component parts of the door, reassemble it and follow the instructions below for proper installation and adjustment so as to prevent an excessive microwave leakage. 1. When mounting the door to the oven, be sure to adjust the door parallel to the bottom line of the oven face plate by moving the upper hinge and lower hinge in the direction necessary for proper alignment.
  • Page 11 4-6 Replacement of Control Circuit Board 4-6-1 Removal of Control Box Assembly 1. Be sure to ground any static electric charge in your body and never touch the control circuit. 2. Disconnect the connectors from the control circuit board. 3. Remove screws securing the control box assembly. SCREWS CONTROL-BOX 4-6-2 Removal of Ass’y P.C.B Assembly...

  • Page 12: Alignment And Adjustments

    5. Alignment and Adjustments PRECAUTION 1. High voltage is present at the high voltage terminals during any cook cycle. 2. It is neither necessary nor advisable to attempt measurement of the high voltage. 3. Before touching any oven components or wiring, always unplug the oven from its power source and dis- charge the high voltage capacitor.
  • Page 13 5-4 Magnetron 1. Continuity checks can indicate only an open filament or a shorted magnetron. To diagnose an open filament or shorted magnetron : 2. Isolate the magnetron from the circuit by disconnecting its leads. Cooling F ins 3. A continuity check across the magnetron filament terminals should indicate one ohm or less.
  • Page 14 5-9 Output Power of Magnetron CAUTION MICROWAVE RADIATION PERSONNEL SHOULD NOT ALLOW EXPOSURE TO MICROWAVE RADIATION FROM MICROWAVE GENERA- TOR OR OTHER PARTS CONDUCTING MICROWAVE ENERGY. The output power of the magnetron can be measured by performing a water temperature rise test. Equipment needed : * Two 1-liter cylindrical borosilicate glass vessel (Outside diameter 190 mm) * One glass thermometer with mercury column...
  • Page 15 5-11 Procedure for Measurement of Microwave Energy Leakage 1) Pour 275±15cc of 20±5°C(68±9°F) water in a beaker which is graduated to 600cc, and place the beaker in the center of the oven. 2) Start to operate the oven and measure the leakage by using a microwave energy survey meter.

  • Page 16: Troubleshooting

    6. Troubleshooting PRECAUTION 1. CHECK GROUNDING BEFORE CHECKING FOR TROUBLE. 2. BE CAREFUL OF THE HIGH VOLTAGE CIRCUIT. 3. DISCHARGE THE HIGH VOLTAGE CAPACITOR. 4. WHEN CHECKING THE CONTINUITY OF THE SWITCHES OR TRANSFORMER, DISCONNECT ONE LEAD WIRE FROM THESE PARTS AND THEN CHECK CONTINUITY WITHOUT THE POWER SOURCE ON. TO DO OTHERWISE MAY RESULT IN A FALSE READING OR DAMAGE TO YOUR METER.
  • Page 17 6-1 Electrical Malfunction(continued) SYMPTOM CAUSE CORRECTIONS Oven lamp and fan motor 1. Misadjustment or loose wiring of pri- Adjust door and latch switches. turn on mary latch switch 2. Defective primary latch switch Oven can program but timer 1. Open or loose wiring of secondary Adjust door and interlock switches.

  • Page 18: Exploded Views And Parts List

    7. Exploded Views and Parts List 7-1 Exploded Views D015 D004 D049 D003 M001 D002 D005 W002 D006 M015 D007 M029 D011 D019 M019 M017 C011 C084 C003 M020 B018 M051 C112 H018 C093 C013 B001 C001 M036 B002 C035 M049 B006 C009...
  • Page 19 7-2 Main Parts List Code No. Description Specification Q’ty Remark B001 3405-001034 SWITCH-MICRO 125/250VAC,16A,200GF,SPST-N B002 3405-001032 SWITCH-MICRO 125/250VAC,16A,200GF,SPDT B006 DE72-00137A LATCH-BODY NC2000(0.6/0.8/1.2),PP,-,-,-, B010 DE66-00093A LEVER-SWITCH(A) NC2000,PP(TH53),-,-,-,-, B011 DE66-00094A LEVER-SWITCH(B) NC2000,PP(TH53),-,-,-,-, B018 DE96-00120B ASSY BODY LATCH M1717N,NC2000(HANDLE) H018 DE31-90057A BLADE-FAN PP,T1.5,-,3RD-W,-,-,- M001 DE70-00011V PANEL-OUTER...
  • Page 20 KEY-DOOR 3RD-W NEW,POM,-,BLK,-,-,- D015 DE94-00912A ASSY DOOR-SUB MW1030WC/XAA,-,5TH-1.0 D019 DE64-00504B HANDLE-DOOR M182DN/M187DN,ABS(HG0760),-, D049 ASSY DOOR M197DNR-5,PURE-WHT,5th 1.0 C002 DE94-00964F ASSY CONTROL-PANEL -,M197DFR-5/BWT,PURE- C003 RCS-M197DF-03 ASSY PCB PARTS M197DFR/BWT,230V50HZ C005 DE64-01045F CONTROL-PANEL M197DFR-5/BWT,ABS,-,-,-,-, C009 DE64-01046B WINDOW-DISPLAY M197DF,SAN,-,-,-,-,SMOG,R C011 DE64-01047A BUTTON-SELECT(A) MF1077WC,ABS(VE0812),-,...
  • Page 21 7-4 Standard Parts List Code No. Description Specification Q’ty Remark 6002-001321 SCREW-TAPPING PWH,+,2S,M5,L10,ZPC(YEL) 6002-001321 SCREW-TAPPING PWH,+,2S,M5,L10,ZPC(YEL) 6006-001170 SCREW-TAPPING WS,TH,+,M4,L10,ZPC(YEL) N/F-EARTH 6006-001170 SCREW-TAPPING WS,TH,+,M4,L10,ZPC(YEL) P-C-EARTH 6006-001170 SCREW-TAPPING WS,TH,+,M4,L10,ZPC(YEL) PN-OUTER 6006-001170 SCREW-TAPPING WS,TH,+,M4,L10,ZPC(YEL) S-M-EARTH 6006-001174 SCREW-TAPPING WE,TH,+,M4,L12,ZPC(YEL) B-PLTE 6006-001174 SCREW-TAPPING WE,TH,+,M4,L12,ZPC(YEL) BD-LAT 6006-001174 SCREW-TAPPING WE,TH,+,M4,L12,ZPC(YEL)
  • Page 22 8-2 P.C.B Parts List Code No. Description Specification Q’ty Remark 0403-001288 DIODE-ZENER ZMM55C5V1,4.8-5.4V,500MW,LL-34,TP ZD01 TR06~TR16,TR19,TR01~TR03, 0504-001008 TR-DIGITAL RN2427,PNP,200MW,2.2K/10K,SOT-23,TP TR05,TR18 1103-001096 IC-EEPROM 24LC04,512x8,SOP,8P,5x4mm,2.5/5.5V,-40to IC05 1203-001037 IC-POSI.FIXED REG. 78L05,SOT-89,3P,185MIL,PLASTIC IC02 1203-002876 IC-VOL. DETECTOR ELM7533CBA-S,SOT-23,3P,2.9X1.5MM IC03 1404-000230 THERMISTOR-PTC 27ohm,20%,-,265V,1.5A,360mA,BK PTC2 1404-001194 THERMISTOR-PTC 39ohm,20%,220/240V,270Vac,1.2A,-,TP PTC1 2007-000033 R-CHIP...

  • Page 23: Pcb Diagrams

    8. P.C.B Diagrams 8-1 P.C.B Diagrams ( This Document can not be used without Samsung’s authorization ) OJ01 OJ02 YW396-03AV(WHT) OJ03 SMW250-05V_WHT SMW250-03V(WHT) DSP1 CSQ4254_2COLOR - 19 -...

  • Page 24: Schematic Diagrams

    9. Schematic Diagrams 9-1 Schematic Diagrams ( This Document can not be used without Samsung’s authorization ) MAGNETRON HIGH VOLTAGE DIODE TO CHASSIS HIGH VOLTAGE CAPACITOR H.V.FUSE SYMBOL COLOR ORANGE BROWN HIGH VOLTAGE BLUE TRANSFORMER - 21 -...

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