Related Manuals for Samsung MR4381G
Summary of Contents for Samsung MR4381G
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Page 1: Table Of Contents
MICROWAVE OVEN MR4381G SERVICE Manual CONTENTS MICROWAVE OVEN 1. Precaution 2. Specifications 3. Operating Instructions 4. Disassembly and Reassembly 5. Alignment and Adjustments Popcorn Minute Frozen Dinner Auto Auto Defrost Reheat Power Level Clock Auto Start Hold Timer 6. Troubleshooting... -
Page 2: Precaution
Immediately before handling any semiconductor components or assemblies, drain the electrostatic charge from your SAMSUNG ELECTRONICS AMERICA, INC. body by touching a known earth ground. HEADQUARTER OFFICE 105 CHALLENGER ROAD 16. Always connect a test instrument's ground RIDGEFIELD PARK N.J.07660-0511... -
Page 3: Specifications
(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... -
Page 4: Specifications
2. Specifications 2-1 Table of Specifications MODEL MR4381G ITEM TIMER 99 MINUTES 99 SECONDS POWER SOURCE 120V/60HZ, AC POWER CONSUMPTION MICROWAVE : 1,150W OUTPUT POWER FROM70 TO 700W (10 LEVEL POWER) (IEC-705 TEST PROCEDURE) OPERATING FREQUENCY 2,450MHz MAGNETRON OM75SH(31) COOLING METHOD... -
Page 5: Operating Instructions
Timer More Less Pause Start Cancel Open Door Push Button Glass Plate Guide Roller Popcorn Minute Frozen Dinner Auto Auto Defrost Reheat Power Level Clock Auto Start Hold Timer More Less Pause Start Cancel 200mm 357mm 489mm 344mm Samsung Electronics... - Page 6 USE ADJACENT TO (WITHIN 2 FEET OF) ANY GAS OR ELECTRIC RANGE, COOKTOP, OR OVEN PLUG THE THREE-PRONG POWER CORD INTO A PROPERLY GROUNDED OUTLET, 120V, 60Hz SCREW WIDTH (Trim to outcase) 3/8'' 1/4'' DEPTH(13 HEIGTH 7/8'' SCREW SCREW (Trim to outcase) (Trim to cabinet) (Fig. 1) (Fig. 2) Samsung Electronics...
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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. Bolts H. V. Trans Samsung Electronics... -
Page 8: Replacement Of Door Assembly
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: Replacement Of Fuse/Drive Motor
Switch coupler. 8. Connect all the leads to the drive motor. Drive Motor Cover Base Plate 9. Screw the drive motor cover to the base plate with a screw driver. Samsung Electronics... - Page 10 3. When installing new membrane key board, make sure that the surface of escutcheon base is Membrane cleaned sufficiently so that any problems Panel (shorted contacts or uneven surface) can be 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: High Voltage Capacitor
Door Open Door Closed procedures. ∞ Primary switch ∞ Monitor switch (COM-NC) 5. Confirm that the gap between the switch ∞ 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 Beaker Temperature Rise Heat Distribution = X 100(%) Maximum Temperature Rise The result should exceed 65%. Cooking Tray Samsung Electronics...
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Page 14: One Minute
2) If the radiation leakage is more than 5 mW/cm after determining that all parts are in good condition, functioning properly and the identical parts are replaced as listed in this manual notift that fact to ; Samsung Electronics America, inc. Headquarter office 105 challenger road ridgefield park n.j.07660-0511... -
Page 15: Troubleshooting
H.V.Transformer component test procedure and replace if it is H.V.Capacitor defective. H.V.Diode 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 Samsung Electronics... -
Page 18: Main Parts List
PANEL-OUTER;SECC T0.6 W351.7 L1014.7 MTR DE91-40100A ASSY NOISE FILTER;SN-U15A 250V 15A SECA DE39-20037E ASSY POWER CORD;SJT AWG16 GRY 230V50HZ L135 DE31-30031B FAN-MOTOR;SMF437UA 120V/60HZ ASSY-FAN-MO DE39-40699A WIRE HARNESS-A;120V60HZ MR4381G R/V MODEL DE47-20009A THERMOSTAT;CS-7SA(160/60) 187Y 250V7.5A 160 DE03-30029A MAGNETRON;OM75SH(31)ESS 4713-001012 LAMP-INCANDESCENT;130V,-,40W,ORG,B/L,-,2 DE71-60010A COVER-AIR;PP(TB53) T1.7 WHT 64G M745... -
Page 19: Door Parts List
Parts No. Description/Specification Q'ty Remarks DE66-20010B BUTTON-PUSH;ABS D-GRY ME4371G DE61-70076A SPRING-BUTTON;HSWR PI0.6 DE34-10202T SWITCH-MEMBRANE;PET MR4381G/XAA SEA DE72-70009B CONTROL-PANEL;ABS (VH-0853) 173.5G GRY MW437 DE67-40003A WINDOW-DISPLAY;ACRYL T2.3 W36.8 L91.8 SM DE91-10368A ASSY P.C.B-MAIN;120V/60HZ NS V.F.D N/HEL DE93-30384B ASSY CONTROL-PANEL;N-DESIGN D/GRY MW4371G 7-5 Body Latch Parts List Ref. -
Page 20: Standard Parts List
DE60-10082A SCREW-A;M4 L12 2S TOOTHED B/DR-M DE60-10082A SCREW-A;M4 L12 2S TOOTHED CON-PA DE60-10012A SCREW-TAP TITE;TH + 3 M4 L10 SWR10 ZPC2 HI-UPP DE60-10082A SCREW-A;M4 L12 2S TOOTHED P-CO-E DE60-10012A SCREW-TAP TITE;TH + 3 M4 L10 SWR10 ZPC2 HI-LOW Samsung Electronics... - Page 21 8. P.C.B Diagrams 8-1 P.C.B Diagrams Samsung Electronics...
- Page 22 VFD1 DE09-30459A IC-MCU;MB89143AP-159 8K DIP 64PIN IC01 DE13-20009A IC;KA7533 DIP IC02 DE26-20144A TRANS-L.V;DN-5574W,CE-5574W 120V 60HZ AC LVT1 DE30-20016A BUZZER;CBE2220BA STICK BUZ1 DE39-60001A WIRE-SO COPPER;PI0.6 SN T 52MM J01~25 DE41-10330A P.C.B-MAIN;FR-1 T1.6 W88 L163 USA-2ND DE61-90053A HOLDER-DIGITRON;PP-JI350 7G BLK Samsung Electronics...
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Page 23: Schematic Diagrams
ORG : ORANGE : P.C.B IN/OUT POINT BLK BLU : GREEN (CON1) DOOR PRIMARY INTERLOCK SENSING INTERLOCK MONITOR SWITCH SWITCH SWITCH MAGNETRON HIGH VOLTAGE DIODE TO CHASSIS HIGH VOLTAGE CAPACITOR SYMBOL COLOR ORANGE HIGH VOLTAGE WHITE TRANSFORMER BLACK BLUE Samsung Electronics...