Samsung CE281DNR, Service Manual

Page 1: ... CONTENTS MICROWAVE OVEN 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 Manual CE281DNR ...

Page 2: ...s and latches 5 evidence of dropping or abuse c Before turning on microwave power for any service test 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 s...

Page 3: ...uld remove their watches while repairing an MWO 11 To avoid any possible radiation hazard replace parts in accordance with the wiring diagram Also use only the exact replacements for the following parts Primary and secondary 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 Secondary door sensing switch...

Page 4: ...gure 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 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 PRECAUTION...

Page 5: ...ETRON COOLING METHOD OUTSIDE DIMENSIONS SHIPPING DIMENSIONS OVEN DIMENSIONS SHIPPING WEIGHT APPROX 60 MINUTES 230V 50Hz AC MICROWAVE 1 300W GRILL 1100W FROM 100 TO 850W IEC 705 TEST PROCEDURE 2 450MHz OM75PH 31 ESS COOLING FAN MOTOR 489 W x 275 H x 379 D 557 W x 329 H x 403 D 306 W x 211 H x 320 D NET 14 5kg GROSS 16 0kg ...

Page 6: ...3 2 Features External Views GRILL METAL RACK DOOR TURNTATBLE COUPLER ROLLER RING SAFETY INTERLOCK HOLES LIGHT VARIABLE COOKING POWER CONTROL KNOB TIMER KNOB VENTILATION HOLS DOOR LATCHES HANDLE 275mm 206mm 379mm 489mm 342mm DEFROST INSTANT REHEAT ...

Page 7: ...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 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 PRECAUTION Servicemen...

Page 8: ...n remove the door assembly 4 3 2 Removal of Door E 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 Insertion depth of the thin metal plate should be 0 5mm or less 4 3 3 Removal of Key Door Spring Remove pin hinge from Door E Detach spring from Door E and key door Door E Key Door Spring Door E Door A Door C ...

Page 9: ...ate properly check if any other part such as the control circuit board blower motor or high voltage transformer is defective 4 5 Replacement of Drive Motor 1 Take out the glass tray guide roller and coupler from cavity 2 Turn the oven upside down to replace the drive motor 3 Remove a screw securing the drive motor cover 4 Disconnect all the lead wires from the drive motor 5 Remove screws securing ...

Page 10: ... 6 1 Removal of Control Box Assembly 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 A ssy 4 Remove the screw securing the timer SCREWS CONTROL BOX ...

Page 11: ...ck 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 Primary Terminals Filament Terminals Secondary Terminal Magnetron Antenna Gasket Plate Cooling Fins PRECAUTION 1 High voltage is present at the high voltage terminals during any cook cycle 2 It is neither necessary nor advisable to attem...

Page 12: ... consult the figure 2 No specific adjustment during installation of Primary switch and Monitor switch to the latch body is necessary 3 When mounting the Latch Body to the oven assembly adjust 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...

Page 13: ...ure 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 5 by a factor of 91 times the of centigrade temperature 5 8 Microwave Heat Distribution Heat Evenness The microwave heat distribution can be checked indirectly by measuring the water temperature rise...

Page 14: ... at the highest power level 4 Set survey meter dual ranges to 2 450MHz 5 Using the survey meter and spacer cone as described above measure near the opening of magnetron the surface of the air guide and the surface of the wave guide as shown in the following photo but avoid the high voltage components The reading should be less than 4mW cm 2 5 11 Note on Measurement 1 Do not exceed the limited scal...

Page 15: ... secondary open the transformer may be faulty Replace H V Transformer Oven lamp does not light 1 Fuse blown out Check fuse Replace the fuse 2 Poor contact of power cord Check continuity of power supply cord Also check whether the power cord is securely wired Adjust or replace the power supply cord 3 Defective lamp The fan motor rotates but lamp does not light Replace the lamp 4 Defective timer con...

Page 16: ...ll to the door hinge Fasten or tighten Timer does not operate 1 Defective timer motor If the timer does not operate with 230V applied to the terminals the timer motor amy be faulty Replace timer 2 Defective contacts of timer S W The lamp does not light Replace timer Cooking tray does not rotate 1 Defective drive motor Check to see if 230V exists at the motor terminals If so motor will be defective...

Page 17: ...N and OFF repeatedly Replace or adjust 6 Open coil of H V Trans former Check the continuity of primary coil and secondary coil If there is no continuity H V Transformer is defective Replace the H V Transformer 7 Shorted H V capacitor Check the continuity of caacitor If the capacitor shorts the fuse blows Replace the H V Capacitor 8 Monitor fuse blown out Check the monitor fuse on the noise filter ...

Page 18: ...M22 MM16 MM29 MM30 MM31 MM06 MM17 MM05 MM55 MM55 MM26 MM61 MM68 MM57 MM60 MM17 MM08 MM09 MM07 MM25 MM59 MM21 MM18 MM19 MM20 MM64 MM03 MM32 MM10 MM109 MM88 MM14 MM27 MM28 MB01 MB05 MB03 MB04 MB02 MM67 MC12 MC01 MC03 MC11 MC08 MD04 MD06 MD05 MD11 MD14 MD03 MD02 MD10 MD01 MD07 ...

Page 19: ... 250V 7 5A H 1 MG TCO MM17 DE47 20010A THERMOSTAT PW 2N 120 60 187Y 250V7 5A 12 1 CAV TCO MM18 DE74 20102D TRAY COOKING GLASS T6 890g 1 MM19 DE97 00193B ASSY GUIDE ROLLER NC2000 0 6 T2 P1198 14 1 MM20 DE67 00140A COUPLER NC2000 0 6 0 8 PPS ESS840 3G 1 MM21 DE39 40409A WIRE HARNESS E 230V50HZ M9G45 CTW 1 H EART MM22 DE31 10154A MOTOR SYNCHRONOUS M2HJ49ZR02 ST 16 50 60 1 MM25 DE65 20014A CABLE CLAMP...

Page 20: ... 240V 3750VA 15A 6mS 20mS 1 MD01 ASSY DOOR CE281DNR BWT PURE WHT CTP SAMS 1 S N A MD02 DE64 00494J DOOR A CE287DNR BWT ABS HG0760 PURE WHT 1 MD03 DE64 00496A SCREEN DOOR M181DN SAN CR5381 G 1 MD04 DE94 00351B ASSY DOOR E COATING MW850WA BLK COATING 1 MD05 DE64 00221D FILM DOOR T0 15 W264 L143 NC08 1 MD06 DE64 40008B DOOR C PP CE745G BLK 1 MD07 DE61 00198A SPRING KEY M1877 HSWR D6 23 1 4 23 1 1 MD1...

Page 21: ... C BACK DE60 10063A SCREW TAP TH FEFN TH M4 L12 1 P OUTER DE60 10070A SCREW TAP TH FEFZY 2 SLOT TH M4 L12 2 B LATCH DE60 10070A SCREW TAP TH FEFZY 2 SLOT TH M4 L12 3 B PLATE DE60 10070A SCREW TAP TH FEFZY 2 SLOT TH M4 L12 1 BKT UPPER DE60 10070A SCREW TAP TH FEFZY 2 SLOT TH M4 L12 1 C BLOWER DE60 10070A SCREW TAP TH FEFZY 2 SLOT TH M4 L12 1 CON BOX DE60 10070A SCREW TAP TH FEFZY 2 SLOT TH M4 L12 1...

Page 22: ...OL COLOR BRN BROWN BLK BLACK RED RED BLU BLUE BLK BLU HIGH VOLTAGE TRANSFORMER HIGH VOLTAGE CAPACITOR HIGH VOLTAGE DIODE TO CHASSIS H V FUSE CONDITION OF OVEN DOOR IS OPENED BRN BROWN WHT WHITE RED RED BLK BLACK Y G YELLOW GREEN BLU BLUE ORG ORANGE YEL YELLOW COOK OFF WIRING COLOR ...