Related Manuals for Samsung M745R
Summary of Contents for Samsung M745R
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Page 1: Table Of Contents
MICROWAVE OVEN M745R SERVICE Manual MICROWAVE OVEN CONTENTS 1. Precaution 2. Specifications 3. Operating Instructions 4. Disassembly and Reassembly 5. Alignment and Adjustments 0.1 kg Auto 10s. 10min 1min 1min+ 6. Troubleshooting M745 7. Exploded Views and Parts List 8. PCB Diagrams... - Page 2 (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. Samsung Electronics...
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Page 3: Precaution
CENTRAL SERVICE CENTER 16. Always connect a test instrument's ground 10. Service technicians should remove their lead to the instrument chassis ground before watches while repairing an MWO. connecting the positive lead; always remove the instrument's ground lead last. Samsung Electronics... - Page 4 (Use a screwdriver.) 3. High voltage is maintained within specified limits by close-tolerance, safety-related components and adjustments. If the high voltage exceeds the specified limits, check each of the special components. Fig. 1-1. Discharging the High Voltage Capacitor Samsung Electronics...
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Page 5: Specifications
2. Specifications 2-1 Table of Specifications TIMER 99 MINUTES 90 SECONDS POWER LEVEL ON TIME OFF TIME POWER SOURCE 230V 50Hz, AC M745R POWER CONSUMPTION MICROWAVE : 1,300W 4 sec 26 sec 160W 7 sec 23 sec OUTPUT POWER FROM 80 TO 800W (10 LEVEL POWER) -
Page 6: Operating Instructions
Auto Power Level Selection Button Clock Setting Button Timer Setting Button 10s. 1min 10min Standard Boost Button Stop/Clear Button 1min+ M745R 3-2 Features & External Views Ventilation Slot Heater Light Door Safety Interlock Holes 0.1 kg Auto Control Panel Door Latches 10s. -
Page 7: Disassembly And Reassembly
4-2 Replacement of High Voltage Transformer 1. Discharge the high voltage capacitor. 2. Disconnect all the leads. 3. Remove the mounting bolts. 4. Reconnect the leads correctly and firmly. H. V. Trans Screws Samsung Electronics... - Page 8 1. Insertion depth of the thin metal plate should be 0.5mm or less. 4-3-4 Removal of Key Door & Spring Door "E" Remove pin hinge from Door "E" Detach spring from Door "E" and key door. Key Door Spring Samsung Electronics...
- Page 9 Base Plate Drive Motor Cover 8. Connect all the leads to the drive motor. 9. Screw the deive motor cover to the base plate with a screw driver. 10. Remount the coupler in the correct position. Samsung Electronics...
- Page 10 3. When installing new membrane key board, make sure that the surface of escutcheon base is cleaned sufficiently so that any problems Membrane (shorted contacts or uneven surface) can be Panel avoided. Samsung Electronics...
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Page 11: Alignment And Adjustments
2. Isolate the magnetron from the circuit by disconnecting its leads. 3. A continuity check across the magnetron filament terminals should indicate one ohm or less. 4. A continuity check between each filament terminal and magnetron case should read open. Cooling Fins Samsung Electronics... - Page 12 ∞ procedures. Primary switch ∞ Monitor switch (COM-NC) 5. Confirm that the gap between the switch ∞ Monitor switch (COM-NO) housing and the switch actuator is no more than ∞ Door Sensing S/W 0.5mm when door is closed. Samsung Electronics...
- Page 13 5. After heating for 2 minutes, measure the water temperature in each beaker. 6. Microwave heat distribution rate can be calculated as follows: Minimum Temperature Rise Beaker Heat Distribution = X 100(%) Maximum Temperature Rise The result should exceed 65%. Cooking Tray Samsung Electronics...
- Page 14 ; CENTRAL SERVICE CENTER 5-13-2 At least once a year have the microwave energy survey meter checked for accuracy by its manufacturer. Samsung Electronics...
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Page 15: Troubleshooting
H.V.Transformer component test procedure and replace if it is H.V.Capacitor defective. H.V.Diode, H.V.Fuse Magnetron 4. Open or loose wiring of power relay 5. Defective primary latch switch 6. Defective power relay or Ass'y PCB Replace PCB main. Samsung Electronics... - Page 16 Use plastic wrap or cover with a lid. Stir once or twice while cooking foods such as soup, cocoa, or milk. Noise from the turntable motor Noise may result from the motor. Replace turntable motor. when it starts to operate. Samsung Electronics...
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Page 17: Exploded Views And Parts List
7. Exploded Views and Parts List 7-1 Exploded Views A ut 0. 1 m in m in in + M 74 Samsung Electronics... - Page 18 M 29 DE66-90013A LEVER-DOOR;POM(F20-01) NTR MW5630T 71533-0015-00 M 30 DE71-60011A COVER-MGT;PP T2.0 WHT M745 M 31 ASSY CONTROL-BOX;230V49HZ M745R(SBTW) WH M 32 ASSY DOOR;PUSH WHT M735/M745(SAW) WHT/BA M 33 DE61-80004A HINGE-LOWER;SCP1 T2.3 ZN-COATING BLK M 34 DE61-80005A HINGE-UPPER;SCP1 T2.3 BLK ZN-COATING...
- Page 19 SWITCH-MEMBRANE;PET 230V49HZ W89.4 161.4 DE67-40002A WINDOW-DISPLAY;RESIN-ACRYLIC T2.3 M945(I DE72-70003A CONTROL-PANEL;ABS(VH-080) WHT DE91-10392A ASSY P.C.B-MAIN;230V50HZ NS LED M745(CIS DE93-30368A ASSY CONTROL-PANEL;230V49HZ M745R(SBTW) 7-5 Standard Parts List Parts No. Description / Specification Q'ty Remarks Old No. DE60-10098A SCREW-ASSY TAPTITE;PH TC M4X8 SWRCH18A Z...
- Page 20 8. P.C.B Diagrams 8-1 P.C.B Diagrams Samsung Electronics...
- Page 21 DE09-30487A IC-MCU;KS57C0004-64 DIP M745(2ND-W,LED,EURO) IC01 DE13-20009A IC;KA7533 DIP IC03 DE13-20033A IC-DRIVE;UDN6118A DIP IC02 DE26-20146A TRANS-L.V;SLV-745E 230V 50HZ AC17/7V LVT1 DE30-20016A BUZZER;CBE2220BA STICK BUZ1 DE39-60001A WIRE-SO COPPER;PI0.6 SN T 52MM J01~17,22~28 DE60-60012A PIN-EYELET;ID2.1 OD2.5 L3.0 SN BSP T0.25 E01~08 Samsung Electronics...
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Page 22: Schematic Diagrams
: P.C.B IN/OUT ORANGE POINT ASSY MAIN P.C.B WHITE BLACK YELLOW DOOR MONITOR PRIMARY GREEN SENSING SWITCH LATCH YELLOW/GREEN SWITCH SWITCH MAGNETRON HIGH VOLTAGE DIODE TO CHASSIS HIGH VOLTAGE CAPACITOR H.V.FUSE SYMBOL COLOR ORANGE BROWN BLUE HIGH VOLTAGE TRANSFORMER Samsung Electronics...