Samsung M245 Service Manual Download Page 1

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MICROWAVE OVEN

M245

SERVICE

Manual

MICROWAVE OVEN

CONTENTS

M245

l b s .
kg

oz.
g

10min

min

1min

Auto

10s.

1min+

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

TRADING & SERVICE

Summary of Contents for M245

Page 1: ... lbs kg oz g h 10min min 1min Auto Auto 10s 1min M 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 TRADING SERVICE ...

Page 2: ... 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 Alteration Warni...

Page 3: ...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 4: ...THOD COOLING FAN MOTOR OUTSIDE DIMENSIONS 556 W x 313 H x 429 D POWER LEVEL M245 10 100W 4 sec 26 sec 20 200W 7 sec 23 sec 30 300W 10 sec 20 sec 40 400W 13 sec 17 sec 50 500W 16 sec 14 sec 60 600W 19 sec 11 sec 70 700W 22 sec 8 sec 80 800W 25 sec 5 sec 90 900W 28 sec 2 sec 100 1000W 30 sec 0 sec ON TIME OFF TIME 2 2 Comparison Chart MODEL FEATURE MORE LESS O AUTO COOK DISH O AUTO DEFROST O TIME CO...

Page 5: ...on Power Level Selection Button Cooking Timer Standing Time Button Stop Clear Button 3 Operating Instructions 3 1 Control Panel Samsung Electronics 3 1 3 2 Features External Views Door VentilationSlot Heater Light SafetyInterlockHoles ControlPanel OpenDoorPushButton GuideRoller GlassPlate DoorLatches M245R lbs kg oz g h 10min min 1min Auto Auto 10s 1min M 556mm 313mm 429mm M245R lbs kg oz g h 10mi...

Page 6: ...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 Reconnect the leads correctly and firmly 4 2 Replacement of High Voltage Transformer Lamp Magnetron H V Trans H V Capacitor...

Page 7: ...ndling 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 Remove pin hinge from Door E Detach spring from Door E and key door 4 3 2 Removal of Door C 4 3 3 Removal of Door E Disassembly and Reassembly Upper Hinge Lower...

Page 8: ...hen replacing the drive motor be sure to remount 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 4 4 Replacement of Fuse 4 5 Replacement of Drive Motor Disassembly and Reassembly Screw Drive Motor Cover Base Plate Drive Motor After replacement of the defective co...

Page 9: ...onnecting the FPC connector make sure that the holes on the connector are properly engaged with the hooks on the Plastic Fastener 1 Window display should not be disassembled as its mounting tabs will be broken If repair work is difficult replace with Ass y control panel 2 The membrane key board is attached to the escutcheon base with doublefaced adhesive tape Therefore applying hot air such as usi...

Page 10: ...nal and magnetron case should read open 1 The low voltage transformer is located on the control circuit board 2 Remove the low voltage transformer from the PCB Ass y and check continuity 3 Normal resistor reading is shown in the table Filament Terminals Secondary Terminal Primary Terminals MODEL M245 Secondary Approx 95 6Ω Filament Approx 0 08Ω Primary Approx 1 58Ω Terminals Resistance 1 2 Input 1...

Page 11: ...djust the Latch Body by moving it so that the oven door will not have any play in it Check for play in the door by pulling the door assembly Make sure that the latch keys move smoothly after adjustment is completed Completely tighten the screws holding the Latch Body to the oven assembly 4 Reconnect to Monitor switch and check the continuity of the monitor circuit and all latch switches again by f...

Page 12: ...ional 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 factor of 91 times the of centigrade temperature 4 187 x 1000 x T Output Power 42 42 Heating Time sec 4 187 Coefficient for Water 1000 Water cc T Temperature Rise T2 T1 5 8 Output Power of Magnetron Alignment and Adjustments CAUTION MICROWAVE RADI...

Page 13: ...st probe must be held on the grip of the handle otherwise a false reading may result when the operator s hand is between the handle and the probe 3 When high leakage is suspected do not move the probe horizontally along the oven surface this may cause damage to the probe 4 Follow the recommendation of the manufacturer of the microwave energy survey meter 1 Pour 275 15cc of 20 5 68 9 water in a bea...

Page 14: ...witch 3 Defective monitor switch NOTE1 4 Shorted HVCapacitor 5 Shorted HVTransformer NOTE2 NOTE 1 All of these switches must be replaced at the same time refer to adjustment instructions Check continuity of power relay contacts and if it has continuity replace power relay also NOTE 2 When HVTransformer is replaced check diode and magnetron also Oven does not accept 1 Key input is not in Sequence R...

Page 15: ...noise can be heard 1 Loose fan and fan motor Tighten screws of fan motor 2 Loose screws on H V Transformer Tighten screws of H V Transformer 3 Shorted H V Diode Replace H V Diode Turntable motor does not rotate 1 Open or loose wiring of turntable motor Replace turntable motor 2 Defective turntable motor Oven stops operation during cooking 1 Open or loose wiring of primary Adjust door and latch swi...

Page 16: ... Views and Parts List 7 1 Exploded Views 7 1 M1 M2 M21 M22 M23 C1 C2 C3 C4 C5 C6 C7 M24 D1 D8 D3 D5 D6 M25 M26 M34 M11 M32 M13 M14 M15 M12 M16 M17 M18 M19 M20 M3 M29 M30 M31 M4 M5 M6 M7 M8 M10 B1 B2 B2 B3 M27 D2 D4 D7 M28 M33 B4 M9 ...

Page 17: ...5 DE59 40001A DIODE H V HVR 1X 32B 12 1 M 16 DE74 20002B TRAY COOKING GLASS T6 PI360 1 2CUFT HKG 1 M 17 DE92 90189B ASSY GUIDE ROLLER D16 5 STD 1 M 18 DE67 60002A COUPLER PPS 5GR BRN M97G45 1 M 19 DE61 40017A FOOT PP A353 BLK MW5630T 2 M 20 DE80 10002A BASE PLATE SGCC T 0 8 W 404 L 633 MW6 1 M 21 DE91 70061A ASSY H V FUSE THV060T 0800 H 5KV 0 8A WH 1 M 22 DE71 60164F COVER MGT PP TB53 A353 30G MW5...

Page 18: ...C 1 DE66 20006A BUTTON PUSH RESIN ABS HR 0370U P WHT M9 1 C 2 DE61 70076A SPRING BUTTON HSWR PI0 6 1 C 3 DE34 10206F SWITCH MEMBRANE PET 230V 50HZ 1 W89 7 L199 1 C 4 DE67 40002A WINDOW DISPLAY RESIN ACRYLIC T2 3 M945 I 1 C 5 DE72 70005B CONTROL PANEL ABS HR0370U T2 5 PURE WHT 1 C 6 DE91 10401A ASSY P C B MAIN 230V50HZ NS VFD M945 EURO N 1 C 7 DE93 30404F ASSY CONTROL PANEL 120V60HZ M245R 1 2 WHT 1...

Page 19: ...THED 4 B PLTE DE60 10082A SCREW A M4 L12 2S TOOTHED 2 BD LA DE60 10082A SCREW A M4 L12 2S TOOTHED 2 CON B DE60 10080A SCREW WASHER M5 L12 2S 4 HVT DE60 10012A SCREW TAP TITE TH 3 M4 L10 SWR10 ZPC2 2 HI LOW DE60 10098A SCREW ASSY TAPTITE PH TC M4X8 SWRCH18A Z 1 CV TCO DE60 10082A SCREW A M4 L12 2S TOOTHED 2 MO FAN DE60 10082A SCREW A M4 L12 2S TOOTHED 1 NO FIL DE60 10082A SCREW A M4 L12 2S TOOTHED ...

Page 20: ...8 P C B Diagrams 8 1 P C B Diagram Samsung Electronics 8 1 ...

Page 21: ...AMIC MLC AXIAL UP050B102KB 1NF 10 4 C11 14 2401 000247 C AL 1SA1ANB107MAN 100UF 20 10V GP 6 3X 1 C03 2401 000914 C AL CESSL1C220M0511AA 22UF 20 16V GP 5 1 C04 2401 001412 C AL 1SG1VFB477MAN 470UF 20 35V GP 10X1 1 C01 2802 000143 RESONATOR CERAMIC KBR 4 19M 4 19MHZ 0 5 1 XTL1 3501 001014 RELAY POWER OM1F S 124LM 24V 21 8MA 17A 1 RY01 3501 001016 RELAY MINIATURE JV24 KT 24V 12 5MA 5A 1F 2 RY02 03 37...

Page 22: ...N RELAY POWER RELAY INRUSH RELAY DOOR SENSING SWITCH DOOR SENSING SWITCH RESISTOR POWER RELAY MAIN RELAY F FA MAGNETRON NO COM NO NO BLU ORG BLK BLK BLK BLK BLU BLK COM 0V LAMP 230V40W L V TRANS PRIMARY LATCH SWITCH NO COM ORG ORG MONITOR SWITCH L FM H V T H V D H V C H V FUSE 1mH BRN BROWN BLU BLUE ORG ORANGE RED RED WHT WHITE BLK BLACK YEL YELLOW GRN GREEN Y G YELLOW GREEN SYMBOL COLOR NOTE MAIN...

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