Samsung MW8490W Service Manual Download Page 1

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MICROWAVE OVEN

MW8692W

SERVICE

Manual

MICROWAVE OVEN

CONTENTS

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

Summary of Contents for MW8490W

Page 1: ...CEManual MICROWAVE OVEN CONTENTS 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 ...

Page 2: ...nicians should 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 sensi...

Page 3: ...ive terminal of the high voltage capacitor 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 1 2 Pretaution Samsung Electronics 1 2 Special Servicing Precautions Continued 1 3 Special High Voltage Precautions PRE...

Page 4: ...9 SECONDS POWER SOURCE 120V 60HZ AC POWER CONSUMPTION MICROWAVE 1 500W OUTPUT POWER 1000 W 10 POWER LEVELS IEC 705 TEST PROCEDURE OPERATING FREQUENCY 2 450MHz MAGNETRON OM75PH 31 ESS COOLING METHOD COOLING FAN MOTOR OUTSIDE DIMENSIONS 2121 32 W x 135 16 H x 1811 32 D NET WEIGHT 44 lbs SHIPPING WEIGHT 50 lbs ...

Page 5: ...Power Level Sets power to level other than high Clock Sets current time Start Pause Canel Press to pause oven or correct a mistake Kitchen Timer Sound Button Auto Reheat Auto Defrost Start One Minute Gentle Cook Pause Cancel 3 2 1 Clock Kitchen Timer More Less Power Level 6 5 4 9 8 7 0 Potato Popcorn Diet Cook Baby Food Fresh Vegetable Frozen Breakfast Frozen Dinner Custom Cook 1 Plate of food 2 C...

Page 6: ...s 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 Cover Air Magnetron H V Trans H V Capacitor Th...

Page 7: ... 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 Disassembly and Reassembly Door C Door A Door E ...

Page 8: ...defective component parts of the door reassemble it and follow the instructions below for proper installation and adjustment so as to prevent an excessive microwave leakage 1 When 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 d...

Page 9: ...e 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 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 Therefor...

Page 10: ...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 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 touchin...

Page 11: ...n 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 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 switche...

Page 12: ...tir the water again with the thermometer and measure the temperature T2 5 Subtract T1 from T2 This will give you the water temperature rise T 6 The output power is obtained by the following formula 7 Normal temperature rise for this model is 9 9 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 i...

Page 13: ...r 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 5 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 12 2 At least once a year have the microwave energy survey meter check...

Page 14: ...r sensing switch 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...

Page 15: ... 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 Check the wire of turntable motor 2 Defective turntable motor Replace turntable motor Oven stops operation during cooking 1 Open or loose wiring of primary Adjust do...

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

Page 17: ... 12G NTR 3RD W 1 M12 DE26 00021A TRANS H V SHV 8598UC 120V60HZ 2230V 3 40V DY 1 M13 2501 001105 C OIL 950nF 2 1KV BK 54x35x80 20 1 M14 DE61 50170A BRACKET HVC SECC T0 8 W35 L153 M6235 1 M15 DE59 40001A DIODE H V HVR 1X 32B 12 1 M16 DE74 20019A TRAY COOKING GLASS T7 5 PI400 1 M17 DE97 00059A ASSY GUIDE ROLLER JE1660WB D17 1 M18 DE63 90062G CUSHION RUBBER T27 5 W45 L70 MW8490 CR RUBBER BLK 1 M19 DE6...

Page 18: ...0275A BUTTON PUSH ABS HR0370U 9G P WHT W9501 3RD W S1 MW 1 C 2 DE61 70076A SPRING BUTTON HSWR PI0 6 1 C 3 DE34 00031C SWITCH MEMBRANE PET MW8692W 1 6 1100W S1 1 C 4 DE72 00033A CONTROL PANEL ABS 1 6CU FT 1 C 5 RA W3USA 00 ASSY PCB PARTS MW7490W 120V60Hz 1 C 6 DE94 00210A ASSY CONTROL PANEL MW8592W PURE WHT 1 C 7 DE67 40179A WINDOW DISPLAY SAN T2 0 SMOG 3RD W S1 1 7 5 Body Latch Parts List Ref No P...

Page 19: ...T DE60 10082I SCREW A 2S 4X12 FEFZY 2 C BLWR DE60 10082I SCREW A 2S 4X12 FEFZY 2 CN BOX DE60 10082I SCREW A 2S 4X12 FEFZY 1 MEM PN DE60 10082I SCREW A 2S 4X12 FEFZY 1 N FLTR DE60 10082I SCREW A 2S 4X12 FEFZY 1 P CORD DE60 10082I SCREW A 2S 4X12 FEFZY 5 PN OUT DE60 10082H SCREW A 2S 4X12 TOOTHED 1 C MOTOR DE60 10082J SCREW TAPPING TH 2S 4X8 MSWR3 ZPC YEL WS 1 BKT HVC DE60 10012A SCREW TAP TITE TH 3...

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

Page 21: ...8X3 2MM 5 R03 R04 R06 R07 R12 P18 2001 000435 R CARBON 1MOHM 5 1 8W AA TP 1 8X3 2MM 1 R25 P19 2001 000515 R CARBON 220OHM 5 1 8W AA TP 1 8X3 2MM 1 R15 P20 2001 000577 R CARBON 2KOHM 5 1 8W AA TP 1 8X3 2MM 2 R05 R13 P21 2001 000613 R CARBON 3 9KOHM 5 1 8W AA TP 1 8X3 2MM 1 R11 P22 2001 000780 R CARBON 470OHM 5 1 8W AA TP 1 8X3 2MM 3 R09 R29 R30 P23 2001 001107 R CARBON S 220ohm 5 1 2W AA TP 2 4x6 4...

Page 22: ...H VOLTAGE LEADS OR AS NOTED ON SPECIAL LEADS POWER MUST BE DISCONNECTED BEFORE SERVICING THIS APPLIANCE C1 120V 20A C2 C3 0 1uF 500kohm 0 9mH 200pF 200pF BLK PNK BLK R RED RED RED WHT BLK WHT WHT WHT ORG ORG WHT BLK MAGNETRON HIGH VOLTAGE DIODE TO CHASSIS FA F HIGH VOLTAGE TRANSFORMER POWER RELAY DOOR SENSING SWITCH BOTTOM MONITOR SWITCH CENTER BLU PRIMARY SWITCH TOP HIGH VOLTAGE CAPACITOR BLK RED...

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