Samsung CE2638NR, Service Manual

Page 1: ...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 PCB Diagrams 9 Schematic Diagrams Manual CE2638NR SRSC ...

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: ...hould 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 Primary door sensing switch...

Page 4: ...igure 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 PRECAUTIO...

Page 5: ...OOLING METHOD OUTSIDE DIMENSIONS OVEN DIMENSIONS OVEN SHIPPING DIMENSIONS SHIPPING WEIGHT APPROX 99 MINUTES 90 SECONDS 230V 50Hz AC MICROWAVE 1 200W GRILL 1100W FROM 100 TO 750W IEC 705 TEST PROCEDURE 2 450MHz OM75PH 31 ESS COOLING FAN MOTOR 489 W x 275 H x 383 D 306 W x 181 H x 320 D 557 W x 329 H x 403 D NET 14 5kg GROSS 16 0kg ...

Page 6: ...3mm VENTILATION HOLES GRILL LIGHT DISPLAY COUPLER DOOR DOOR LATCHES OPEN DOOR PUSH BUTTON METAL RACK SAFETY INTERLOCK HOLES ROLLER RING CONTROL PANEL TURNTABLE 3 Operating Instructions 3 1 Control Panel 3 2 Features External Views ...

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 Serviceme...

Page 8: ...l when handling Door C because it is fragile Then remove the door assembly 4 3 3 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 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 d...

Page 9: ...operate 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 secur...

Page 10: ...rom the Ass y control box 4 When reconnecting the FPC connector make sure that the holes on the connector are properly engaged with the hooks on the Plastic Fastener 4 6 3 Removal of Window Display Membrane Panel 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 es...

Page 11: ...agnetron 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 Primary Terminals Filament Terminals Secondary Terminal Magnetron Antenna Gasket Plate Cooling Fins PRECAUTION 1 High voltage is present at the high voltage terminals...

Page 12: ...ody 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 comple...

Page 13: ...edure 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 9 Microwave Heat Distribution Heat Evenness The microwave heat distribution can be checked indirectly by measuring the water temperature ri...

Page 14: ...en 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 cm2 5 12 Note on Measurement 1 Do not exceed the limited sca...

Page 15: ... procedure Replace PCB main Timer starts countdown but no microwave oscillation No heat while oven lamp and fan motor turn on 1 Off alignment of latch switches 2 Open or loose connection of high voltage circuit especially magnetron filament circuit NOTE Large contact resistance will bring lower magnetron filament voltage and cause magnetron to lower output and or intermittent oscillation 3 Defecti...

Page 16: ... main Loud buzzing noise can be heard 1 Loose fan and fan motor 2 Loose screws on H V Transformer 3 Shorted H V Diode Tighten screws of fan motor Tighten screws of H V Transformer Replace H V Diode Turntable motor does not rotate 1 Open or loose wiring of turntable motor 2 Defective turntable motor Replace turntable motor Oven stops operation during cooking 1 Open or loose wiring of primary interl...

Page 17: ...16 MM29 MM30 MM31 MM67 MM06 MM172 MM26 MM17 MM08 MM09 MM07 MM59 MM18 MM19 MM20 MM64 MM03 MM32 MM10 MM13 MM171 MM05 MM55 MM14 MM27 MM28 MB01 MB05 MB03 MB04 MB08 MB02 MD01 MD08 MD04 MD09 MD02 MD03 MD10 MD07 MC06 MC05 MM61 MM68 MM60 MM25 MC01 MC05 MC04 MC02 MC03 MC07 MC13 MC06 MM88 ...

Page 18: ...1 DE47 00002B THERMOSTAT PW2N 100 110 187H 30 0 1 MM172 DE47 20010A THERMOSTAT PW 2N 120 60 187Y 250V7 5A 120 1 CAV TCO MM18 DE74 20102B TRAY COOKING GLASS T5 0 M745 1 MM19 DE97 00193B ASSY GUIDE ROLLER NC2000 0 6 T2 P1198 14PI 1 MM20 DE67 00140A COUPLER NC2000 0 6 0 8 PPS ESS840 3G BRN NEW 1 MM22 DE31 10154A MOTOR SYNCHRONOUS M2HJ49ZR02 ST 16 50 60HZ 1 MM25 DE65 20014A CABLE CLAMP NY 66 DA 6N 1 P...

Page 19: ...TROL PANEL 230V50HZ M1732 P WHT S1 DESIGN 1 MD01 DE94 00256W ASSY DOOR CE2618NR CE2638NR BWT PURE WHT CIS 1 MD02 DE64 00091T DOOR A M1618R BWT ABS PURE WHT 1 MD03 DE67 20186A SCREEN DOOR SAN T2 2 W354 L224 SMOG 3RD 0 7CU FT 1 MD04 DE92 50133F ASSY DOOR E CE2733 3RD 0 7 BLK CAOTING 2ND HINGE 1 MD05 DE01 00112B FILM DOOR PET L268 T0 15 W150 NTR 1 MD06 DE64 40008B DOOR C PP CE745G BLK 1 MD07 DE61 001...

Page 20: ...60 10082H SCREW A 2S 4X12 TOOTHED 1 COVER AIR DE60 10082H SCREW A 2S 4X12 TOOTHED 4 OUT PANEL DE60 10098A SCREW ASSY TAP TITE GLD SWRCH18A ZPC2 PH TC M4X8 WT 1 CVT TCO DE60 10098A SCREW ASSY TAP TITE GLD SWRCH18A ZPC2 PH TC M4X8 WT 1 D MOTOR DE60 10098A SCREW ASSY TAP TITE GLD SWRCH18A ZPC2 PH TC M4X8 WT 2 MGT TCO DE60 10122A SCREW TAP TH FE FN TAP TH 2 4X8 1 P OUTER DE60 10195A SCREW STAR POLE SW...

Page 21: ... 19 8 P C B Diagrams 8 1 P C B Diagrams ...

Page 22: ...P 5 TR02 05 08 1202 000141 IC VOLTAGE COMP 7033 SOT 89 3P SINGLE 0V P 1 IC03 1203 001037 IC VOLTAGE REGULATOR 78L05 SOT 89 3P 185MIL PLASTIC 1 IC02 1404 001194 THERMISTOR PTC 39ohm 20 220 240V 270Vac 1 2A TP 1 PTC1 2007 000033 R CHIP 0OHM 5 1 8W DA TP 3216 4 J11 13 16 2007 000282 R CHIP 100KOHM 5 1 10W DA TP 2012 2 R27 28 2007 000300 R CHIP 10KOHM 5 1 10W DA TP 2012 3 R07 08 09 2007 000346 R CHIP ...

Page 23: ...ED BLU BLUE WHT BLK 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 1 INPUT 230V 2 DOOR OPEN 3 LAMP ON 4 P C B PATTERN 5 P C B IN OUT POINT ...