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SERVICE

MICROWAVE OVEN

CONTENTS

MICROWAVE OVEN

1. Precaution .......................................... 1

2. Specifications .................................... 3

3. Operating Instructions....................... 4

4. Disassembly and Reassembly ....... 5

5. Alignment and Adjustment ............. 9

6. Troubleshooting ............................... 13

7. Exploded Views and Parts List .... 15

8. PCB Diagrams ................................. 19

9. Schematic Diagrams ....................... 21

Manual

MD800WC (WHITE)
MD800SC (SILVER)

Содержание MD800SC

Страница 1: ...recaution 1 2 Specifications 3 3 Operating Instructions 4 4 Disassembly and Reassembly 5 5 Alignment and Adjustment 9 6 Troubleshooting 13 7 Exploded Views and Parts List 15 8 PCB Diagrams 19 9 Schematic Diagrams 21 Manual MD800WC WHITE MD800SC SILVER ...

Страница 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...

Страница 3: ...ould 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 switc...

Страница 4: ...oltage 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 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 specia...

Страница 5: ...PUT POWER OPERATING FREQUENCY MAGNETRON COOLING METHOD OUTSIDE DIMENSIONS NET WEIGHT SHIPPING WEIGHT 99 MINUTES 99SECONDS 120V 60Hz AC MICROWAVE 1 150W FROM 80 TO 800W 10 LEVEL POWER ICE 705 TEST PROCEDURE 2 450MHz OM75S 20 COOLING FAN MOTOR 16 W x 12 37 64 H x 17 3 16 D 30 2 lbs 33 3 lbs ...

Страница 6: ... 4 3 Operating Instructions 3 1 Control Panel 3 2 Features External Views 406 5 mm 305 mm 319 5 mm 215 mm 437 mm ...

Страница 7: ...ron 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 Capacitor 1 Discharge the high voltage capacitor 2 Disconnect all the leads 3 Remove the screw 4 Reconnect the leads correctly and firmly PRECAUTION Servicemen should remove their watches whenever working close to or replacing the magnetron PRECAUTION Th...

Страница 8: ...ub P C B Assembly 1 Disconnect all lead wires from the Sub P C B 2 Remove screws securing of the Sub P C B 4 3 4 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 panel is attached to the escutcheon base with doublefaced adhesive tape Therefore applying...

Страница 9: ...e down to replace the drive motor 3 Remove a screw securing the drive motor cover or disconnect the drive motor cover from base plate by nipper 4 Disconnect all the lead wires from the drive motor 5 Remove screws securing the drive motor to the cavity 6 Remove the drive motor and the coupler 7 When replacing the drive motor be sure to remount it in the correct position with the coupler 8 Connect a...

Страница 10: ...n mounting the door to the oven be sure to adjust the door parallel to the bottom line of the oven face plate by moving the upper hinge and lower hinge in the direction necessary for proper alignment 2 Adjust so that the door has no play between the inner door surface and oven front surface If the door assembly is not mounted properly microwave energy may leak from the space between the door and o...

Страница 11: ...ment or shorted magnetron 2 Isolate the magnetron 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 circuit PRECAUTION 1 High voltage is present at the high voltage terminals during any cook cycle 2 It is neither necessary no...

Страница 12: ... the figure 2 No specific adjustment during installation of Primary switch Secondary 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 ...

Страница 13: ...Temperature Rise T1 T2 To Room Temperature Mc Cylindrical borosilicate glass weight 7 Normal temperature rise for this model is 9 3 C to 10 5 C 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 5 9 Microwave Heat Distribution Heat Evenness The microwave heat distribution can b...

Страница 14: ...n 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 12 Note on Measurement 1 Do not exceed the limited sca...

Страница 15: ...ation 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 De...

Страница 16: ...CB 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 Secondary in...

Страница 17: ... T017 D049 M034 M023 M020 M022 H018 M162 C080 M051 C081 M132 M049 B002 B004 B001 B018 B006 B010 B011 M037 M038 M040 M041 P165 M035 P096 M001 M029 M048 D006 D011 D007 D002 D024 D004 C084 C005 C089 C009 C116 C004 C082 M039 M036 W002 M018 M019 M015 C081 M030 C003 C127 ...

Страница 18: ...SMF 800UA 120V 60Hz 2480 1 M022 DE63 00238A COVER BLOWER MD800WC XAA PP TB53 A353 1 M023 DE31 10177F MOTOR FAN SMF 800UA MD800WC 60Hz 120 1 M029 DE47 20173A THERMOSTAT PW 2N 90 60 30 187Y 250V7 5A 1 CAVITY White M029 DE47 20173A THERMOSTAT PW 2N 90 60 30 187Y 250V7 5A 1 CAVITY Silver M030 DE47 20060A THERMOSTAT PW 2N 8XV 125V15A V 120 0 30 1 MGT M034 DE67 00180A COUPLER MW8ROWC PPS ROUND MWO 1 M03...

Страница 19: ...SIL 1 Silver C084 DE96 00344A ASSY KEY MODULE DKM MD800 KEY MODULE 1 C089 DE39 40673C WIRE HARNESS H MD800 120V60Hz 1 C116 DE64 00899A DECORATION COVER TC MD800WC SC ABS VH08 1 D002 DE64 00890A DOOR A MW8ROWC ABS HR0370 T2 0 0 8CUFT 1 White D002 DE64 00890B DOOR A MR87 MR89 ABS VICTORY SIL 1 Silver D004 DE94 00859B ASSY DOOR E MD800WC XAA BLK SPRAY COATIN 1 D006 DE64 00892A DOOR C MW8ROWC PP TB53 ...

Страница 20: ...5 BOTTOM 6002 000231 SCREW TAPPING TH 2S M4 L12 ZPC YEL SM20C 2 C BOX 6002 000231 SCREW TAPPING TH 2S M4 L12 ZPC YEL SM20C 2 COVER MOTOR 6002 000231 SCREW TAPPING TH 2S M4 L12 ZPC YEL SM20C 1 FRO BKT PCB 6002 000231 SCREW TAPPING TH 2S M4 L12 ZPC YEL SM20C 2 OUT PANEL 6002 000635 SCREW TAPPING PH 2S M4 L8 ZPC YEL SWRCH18 1 T T MO 6002 001325 SCREW TAPPING TH TORX 2S M4 L12 ZPC YEL 1 CAP SIDE 6002 ...

Страница 21: ... 19 8 P C B Diagrams 8 1 P C B Diagrams This Document can not be used without Samsung s authorization ...

Страница 22: ...2 9X1 5MM PLASTIC 1 IC03 1404 001194 THERMISTOR PTC 39ohm 20 220 240V 270Vac 1 2A TP 1 PTC1 1405 000001 VARISTOR 470V 1250A 14x7 5mm TP 1 ZNR1 2007 000033 R CHIP 0ohm 5 1 4W TP 3216 15 J01 J15 2007 000033 R CHIP 0ohm 5 1 4W TP 3216 3 OJ1 OJ3 2007 000300 R CHIP 10Kohm 5 1 8W TP 2012 3 R08 RD11 2007 000468 R CHIP 1Kohm 5 1 8W TP 2012 2 R09 R12 2007 000546 R CHIP 20Kohm 5 1 8W TP 2012 5 R07 R13 R16 2...

Страница 23: ...on BLK BLU BLK RED RED RED RED BLU RED ORG ORG BLU BLK BLK BLK MAGNETRON HIGH VOLTAGE DIODE TO CHASSIS FA F HIGH VOLTAGE TRANSFORMER POWER RELAY DOOR SENSING SWITCH BOTTOM MONITOR SWITCH CENTER BLK WHT WHT PRIMARY SWITCH TOP HIGH VOLTAGE CAPACITOR RED ORG WHT SYMBOL COLOR BLU BLK RED ORANGE WHITE BLUE BLACK ...

Страница 24: ...ce Manual is a property of Samsung Electronics Co Ltd Any unauthorized use of Manual can be punished under applicable International and or domestic law Samsung Electronics Co Ltd May 2003 Printed in Korea Code No DE68 03161A ...

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