Samsung M1914, Service Manual

Page 1: ...LOW SERVICEManual MICROWAVE OVEN CONTENTS Defrost 1 Precaution 2 Specifications 3 Operating Instructions 4 Disassembly and Reassembly 5 Alignment and Adjustments 6 Troubleshooting 7 Exploded Views and Parts List 8 Schematic Diagrams SESC ...

Page 2: ...hes interlock monitor switch 12 If the fuse is blown by the Interlock Monitor Switch Replace all of the following at the same time Primary door sensing switch and power relay 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 Alteratio...

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: ...TES POWER SOURCE 230V 50Hz POWER CONSUMPTION MICROWAVE 1 400W OUTPUT POWER FROM 100 TO 1000W 240V 50Hz Only FROM 95 TO 950W 230V 50Hz Only IEC 705 TEST PROCEDURE OPERATING FREQUENCY 2 450MHz MAGNETRON OM75PH 31 COOLING METHOD COOLING FAN MOTOR OUTSIDE DIMENSIONS 517 W x 297 H x 399 D ...

Page 5: ...850w Defrost 3 Operating Instructions 3 1 Control Panel Samsung Electronics 3 1 3 2 Features External Views Door Ventilation Holes Light Safety Interlock Holes Control Panel Roller Ring Coupler Glass Plate Door Latches Defrost 517mm 297mm 399mm Defrost ...

Page 6: ...it 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 Reconnect the leads correctly and firmly 4 1 Replacement of High Voltage Transformer Lamp Magnetron H V Trans H V Ca...

Page 7: ... the figure insert and bend a thin metal plate between Door E and Door A until you hear the tick sound Insertion depth of the thin metal plate should be 0 5mm or less 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 Then remove the door assembly 4 3 1 Removal of Door C 4 3 2 Removal of Door E Door C Door A Door E ...

Page 8: ... 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 component parts of the door reassemble it ...

Page 9: ...ntrol Box 4 4 Samsung Electronics 1 Disconnect the connectors from the control box assembly 2 Remove screws securing the control box assembly 3 Remove the knobs of the control box Ass y 4 Remove the screw securing the timer CONTROL BOX SCREW Disassembly and Reassembly ...

Page 10: ...ondary Terminal Primary Terminals Secondary Approx 100W Filament Approx 0W Primary Approx 1 456W Cooling Fins Gasket Plate Magnetron Antenna 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 s...

Page 11: ... 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 following the components test procedures 5 Confirm that the gap between th...

Page 12: ...n 4 When heating is finished stir the water again with the thermometer and measure the temperature T2 5 Subtract T1 from T2 This will give you the water temperature rise DT 6 The output power is obtained by the following formula Output W 100 x DT 7 Normal 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 temperatur...

Page 13: ... of a radiarion preventing device make a repair record for the measured values and keep the data 2 If the radiation leakage is more than 4 mW cm2 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 CENTRAL SERVICE CENTER 5 10 2 At least once a year have the microwave energy survey meter checke...

Page 14: ...fuse 2 Poor contact of Check 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 lig...

Page 15: ...r tighten loose screw 1 Defective If the 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 220 230V exists at the motor terminals Replace drive motor does not drive motor If so motor will be defec...

Page 16: ...eck the continuity of primary 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 Sym...

Page 17: ...ded Views and Parts List 7 1 Exploded Views 7 1 M1 M2 M21 M22 M23 M24 M15 M26 M14 M16 M18 M19 M20 M3 M10 M12 M13 M11 M17 D1 D9 D2 D3 D4 D5 D6 D8 D7 B1 B2 B2 B3 B4 NC NO COM C2 C1 C3 C5 C6 C7 C8 C9 C4 M4 M27 M28 M5 M7 M6 M8 M9 M25 ...

Page 18: ...063A ASSY HVD V2M6 PI9 0 0 05MT 1 M15 DE26 00008A TRANS H V SHV 293EC 230V50HZ 2230V 3 15V DY 1 M16 DE31 10154A MOTOR DRIVE M2HJ49ZR02 ST 16 50 60HZ 1 M17 DE71 00015A COVER CEILING T0 3 W114 2 L121 5 CE2933 1 M18 DE80 10001G BASE PLATE SGCC T0 8 W345 L565 3RD 1 M19 DE61 50579A FOOT PP H8 PI15 8x16 1 BLK 3RD 2 M20 DE74 20015B TRAY COOKING GLASS T6 0 PI318 1050G MW5630T 1 M21 DE92 90189T ASSY GUIDE ...

Page 19: ...TIMER ABS 10G RACING GRN M1914 GR XEU 1 GREEN C 1 DE64 00007F KNOB TIMER ABS 10G YELLOW M1914 Y XEU 1 YELLOW C 2 DE71 00001H COVER PANEL ABS M1914 XEU WHT 3RD 1 0 FISH2 1 WHITE C 2 DE71 00001L COVER PANEL ABS RACING GRN 3RD 1 0 FISH2 1 GREEN C 2 DE71 00001N COVER PANEL ABS M1914 Y XEU YELLOW 3RD 1 0 FISH2 1 YELLOW C 3 DE72 00007H CONTROL PANEL ABS M1914 XEU WHT 3RD 1 0 FISH 2 1 WHITE C 3 DE72 0000...

Page 20: ... SCREW A 2S 4X12 TOOTHED 2 TCO DE60 10098A SCREW ASSY TAP TITE PH TC M4X8 SWRCH18A ZPC2 GLD W 2 M DRV DE60 10069A SCREW TAP TH TH M4 L10 FRFZY 2 DE60 10069A SCREW TAP TH TH M4 L10 FRFZY 1 AC REL DE60 10072A SCREW TAP TH TH M4 L16 FEFZY 2 SLOT 4 TIMER DE60 10088A SCREW TAP PH PH M3 L8 FEFZY PLAIN 2 T T S W DE60 10098A SCREW ASSY TAP TITE PH TC M4X8 SWRCH18A ZPC2 GLD W 1 DE60 10012A SCREW TAP TITE T...

Page 21: ...LACEMENT USE 16 GA 105ûC THERMOPLASTIC COVERED WIRE EXCEPT FOR HIGH VOLTAGE LEADS OR AS NOTED ON SPECIAL LEADS POWER MUST BE DISCONNECTED BEFORE SERVICING THIS APPLIANCE MAGNETRON FA F RED RED RED RED SYMBOL COLOR BRN BROWN BLK BLACK RED RED BLU BLUE BRN BLU HIGH VOLTAGE TRANSFORMER HIGH VOLTAGE CAPACITOR HIGH VOLTAGE DIODE TO CHASSIS H V FUSE ...