Samsung M937 Service Manual Download Page 1

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MICROWAVE OVEN

M937

SERVICE

Manual

MICROWAVE OVEN

CONTENTS

500

700

150

1000W

M937

300

1. Precaution

2. Statements

3. Operating Instructions

4. Disassembly and Reassembly

5. Alignment and Adjustments

6. Troubleshooting

7. Exploded Views and Parts List

8. Wiring Diagrams

SESAB

Summary of Contents for M937

Page 1: ...NTENTS 1 2 3 4 5 6 7 8 9 10 20 30 40 60 0 50 500 700 150 1000W M937 300 1 Precaution 2 Statements 3 Operating Instructions 4 Disassembly and Reassembly 5 Alignment and Adjustments 6 Troubleshooting 7 Exploded Views and Parts List 8 Wiring Diagrams SESAB ...

Page 2: ...ELECTRONICS Samsung Electronics Co Ltd October 1997 Printed in Korea DE68 62310A ...

Page 3: ... or inspection within the microwave generating compartments check the magnetron wave guide or transmission line and cavity for proper alignment 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 releas...

Page 4: ...ondary interlock switches interlock monitor switch 12 If the fuse is blown by the Interlock Monitor Switch Replace all of the following at the same time Primary and secondary switches as well as the Interlock Monitor Switch The correct adjustment of these switches is described elsewhere in this manual Make sure that the fuse has the correct rating for the particular model being repaired 13 Design ...

Page 5: ...es this includes the filament voltage of the magnetron High voltage is present during any cook cycle Before touching any components or wiring always unplug the oven and discharge the high voltage capacitor See Figure 1 1 2 The high voltage capacitor remains charged about 30 seconds after disconnection Short the negative terminal of the high voltage capacitor to to the oven chassis Use a screwdrive...

Page 6: ... 230V 50Hz SINGLE PHASE POWER CONSUMPTION 1 550W OUTPUT POWER 150W 1000W OPERATING FREQUENCY 2450MHz TIMER 60 MINUTES COOLING METHOD AIR COOLING MAGNETRON OM75P 31 ESST OUTSIDE DIMENSIONS 517 W x 297 D x 408 H mm OVEN CAVITY DIMENSIONS 330 W x 222 D x346 H mm SHIPPING WEIGHT APPROX 19 Kg ...

Page 7: ...3 Operating Instructions 3 1 Control Panel Samsung Electronics 3 1 M937 1 2 3 4 5 6 7 8 9 10 20 30 40 60 0 50 500 700 150 1000W 300 500 700 150 1000W 300 ...

Page 8: ... power level to 100 maximum by turning COOKING POWER CONTROL knob 3 Set the time to 4 to 5 minutes by turing TIMER knob Important If any problem is experienced in the operation of the oven please refer to the section on page 4 what to do if you are in doubt or have a problem Operating Instruction 3 3 Checking That Your Oven is Operating Correctly 3 2 Features External Views Door VentilationSlot Li...

Page 9: ... 15 150W 3 5 Adjusting the Cooking Time During Cooking Stopping the Cooking Adding Extra Time To stop the cooking Press Temporarily Open Door To resume cooking close the door Completely Turn the TIMER knob to O Simply move the timer knob to any increased setting that you require 3 6 Manual Defrosting Food 500 700 150 1000W 300 3 7 Instant Cook Guide 1 Place the food in the oven and close the door ...

Page 10: ...ating to pull out from hole of air cover NOTE1 When removing the magnetron make sure that its antenna does not hit any adjacent parts or it may be damaged NOTE2 When replacing the magnetron be sure to remount the magnetron gasket in the correct position and make sure the gasket is in good condition 1 Discharge the high voltage capacitor 2 Disconnect all the leads 3 Remove the mounting bolts 4 Reco...

Page 11: ...Door C Be careful when handling Door C because it is fragile Following the procedure as shown in the figure insert and bend a thin metal plate between Door E and Door A until you hear the tick sound 1 Insertion depth of the thin metal plate should be 0 5mm or less 4 3 4 Removal of Key Door Spring Remove pin hinge from Door E Detach spring from Door E and key door 4 3 2 Removal of Door C 4 3 3 Remo...

Page 12: ...unt it in the correct position 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 4 3 Disassembly ReaAssembly Screw Drive Motor Cover Base Plate Drive Motor 4 3 5 Reassembly Test 4 4 Replacement of Fuse After replacement of the defective component parts of the door reassem...

Page 13: ...continuity check across the magnetron filament terminals should indicate one ohm or less 4 A continuity check between each filament terminal and the magnetron case should read open Magnetron Antenna Gasket Plate Cooling Fins 5 Alignment and Adjustments Samsung Electronics 5 1 PRECAUTION 1 High voltage is present at the high voltage terminal of the high voltage transformer during any cook cycle 2 I...

Page 14: ...terlock monitor switch all together Then follow the adjustment procedures below After repair and adjustment be sure to check the continuity of all interlock switches and the interlock monitor switch Door Open Door Closed Primary switch 0 Monitor switch COM NC 0 Monitor switch COM NO 0 Door Sensing S W 0 Secondary switch 0 Alignment and Adjustments 5 3 High Voltage Capacitor 1 Check continuity of t...

Page 15: ...temperature rise for this model is 9ûC to 11ûC at HIGH NOTE 1 Variations or errors in the test procedure will cause a variance in the temperature rise Additional power test should be made if temperature rise is marginal NOTE 2 Output power in watts is computed by multiplying the temperature rise step E by a power factor of 91 in case of centigrade temperature 5 7 Microwave Heat Distribution Heat E...

Page 16: ...repair record for the measured values and keep the data 2 If the radiation leakage is more than 4 mW ß 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 RELECTRIC AB KAMMAKARGATAN 27 104 30 STOCKHOLM SWEDEN 5 13 2 At least once a year have the microwave energy survey meter checked for accura...

Page 17: ...heck continuity of power supply cord Also check Adjust or replace the power cord whether the power cord is securely wired power supply cord 3 Defective lamp The fan motor rotates but lamp does not light Replace the lamp Oven lamp 4 Defective timer Check the terminals of timer for continuity Replace the timer does not contacts turning the timer knob ON and OFF repeatedly light 5 Thermal cutout In t...

Page 18: ...he timer does not operate with 220 230V applied to the Replace timer Timer does timer motor terminals the timer motor amy be faulty not operate 2 Defective The lamp does not light Replace timer contacts of timer S W Cooking tray 1 Defective Check to see if 21V exists at the motor terminals Replace drive motor does not drive motor If so motor will be defective rotate 1 Blocking of Check if the air ...

Page 19: ...imary coil and secondary Replace the H V Trans coil If there is no continuity H V Transformer is H V Transformer former defective 7 Shorted H V Check the continuity of capacitor Replace the capacitor If the capacitor shorts the fuse blows H V Capacitor 8 Monitor fuse Check the monitor fuse Replace the blown out on the noise filter Monitor fuse 6 2 Unsatisfactory Cooking Symptom Related Parts Check...

Page 20: ...st 7 1 Main Exploded View Samsung Electronics 7 1 M1 M2 M21 M22 M23 M24 M26 M25 M15 M13 M16 M18 M19 M20 M30 M3 M4 M5 M6 M7 M8 M10 M12 M11 M29 M27 M28 M17 D3 D2 D1 D7 D8 D4 D5 D9 D10 D6 C4 C5 C6 C2 C3 C1 M9 B1 B2 B4 B3 NC NO COM B5 ...

Page 21: ...MB45 1 M 13 DE91 70101C ASSY THERMOSTAT MW5574W 160 60 187 HORIZ 1 M 15 DE26 10100F TRANS H V SHV 945EG1 230V 50HZ DPC 2290V 3 1 M 16 DE61 50106A BRACKET HVC SECC T0 8 W31 L125 8 1 M 17 2501 001019 C OIL HCH212110C 1 1OUF 2100V 35X54X90 2 1 M 18 DE59 40001A DIODE H V HVR 1X 32B 12 1 M 19 DE91 70061A ASSY H V FUSE THV060T 0800 H 5KV 0 8A WHT 1 M 20 DE61 40017A FOOT PP A353 BLK MW5630T 2 M 21 DE31 1...

Page 22: ...rts List Samsung Electronics 7 3 Exploded Views and Parts List Ref No Parts No Description Specification Q ty Remarks C 1 DE64 10129A KNOB ABS P WHT 5G CE737G 2 C 2 DE64 10131A KNOB INDICATOR ABS YEL 5G CE737G 2 C 3 DE64 10130A KNOB COVER ABS HR 0370 WHT CE737G 2 C 4 DE72 70181A CONTROL PANEL ABS 200G WHT T3 W105 8 L284 M 1 C 5 DE45 10074A TIMER ASSY TMFK60MTAL 220 240V 50HZ CMO TYP 1 C 6 3501 000...

Page 23: ...CREW A M4 L12 2S TOOTHED 1 A S SC DE60 10080A SCREW WASHER M5 L12 2S 4 HVT DE60 10080A SCREW WASHER M5 L12 2S 4 MGT DE60 10045A SCREW TAP PH PH M3 L6 FRFZY 2 MGT TC DE60 10033A SCREW TH TH M4 L10 MSWR10 FEFZY 2 HI LOW DE60 10082A SCREW A M4 L12 2S TOOTHED 1 MO FAN DE60 10082A SCREW A M4 L12 2S TOOTHED 2 B PLTE DE02 00029A TAPE SCOTCHPAR POLYESTER 3M 893 W50 2 DE60 10082A SCREW A M4 L12 2S TOOTHED ...

Page 24: ... MONITOR LATCH S W 1 0mH NO NO NO NO COM COM BRN BLU ORG ORG BLK BRN BLU BLU ORG BRN COM BRN 230V OV 21V BRN BRN BRN BRN BRN BLU T C O CAVITY TIMER S W SECONDARY S W INRUSH S W BLU BLU BLU BLU YEL BLK BLU BLU ORG ORG ORG ORG WHT WHT WHT PRIMARY S W T C O MGT V P C S W NOISE FILTER NOTE ORG RED ORG RED BLK BLU FA F HIGH VOLTAGE TRANSFORMER H V FUSE HIGH VOLTAGE CAPACITOR HIGH VOLTAGE DIODE TO CHASS...

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