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9. Schematic Diagrams

9-1 Schematic Diagrams

9-1

VARISTOR

L.V.TRANS

LAMP

MAIN RELAY

POWER RELAY

(SECONDARY INTERLOCK)

PRIMARY S/W

CAVITY TCO

FAN MOTOR

DRIVE MOTOR

MONITOR

SWITCH

H. V. TRANSFORMER

H. V. CAPACITOR

120V

MAGNETRON

POWER CORD
AC 220V/60Hz

GRY

BLK

YEL

FUSE

250V10A

GRY

WHT

ORG

POWER MUST BE DISCONNECTED

BEFORE SERVICING THIS APPLINACE

WARNING

NOTE : CIRCUIT SHOWN WITH DOOR IS OPENED POSITION.
NOTE : FOR SERVICE REPLACEMENT USE 16GA 105ßC
THERMOPLASTIC COVERED WIRE EXCEPT
FOR HIGH VOLTAGE LEADS OR AS NOTED ON SPECIAL LEADS.

1. INPUT : 120V 60HZ
2. DOOR : OPEN
3. LAMP : ON
4. : P.C.B PATTERN
5. : P.C.B IN/OUT POINT

MGT TCO

COM

120V

130V
40W

21V

P.C.BOARD

DOOR
SENSING
SWITCH

CON2

H.V.DIODE

(80ßC OFF, 70ßC ON)

(160ßC OFF, 60ßC ON)

BLK

RED

ORG

WHT

BLK

WHT

ORG

WHT

BLK

MAGNETRON

HIGH VOLTAGE
DIODE

TO CHASSIS

HIGH VOLTAGE
TRANSFORMER

POWER RELAY

DOOR SENSING SWITCH

BOTTOM

MONITOR SWITCH

CENTER

BLK

PRIMARY SWITCH

TOP

HIGH VOLTAGE CAPACITOR

WHT

BLK

RED

ORG

WHT

SYMBOL

COLOR

BLU

BLK

RED

ORANGE

WHITE

BLUE

BLACK

Samsung Electronics

Содержание MW6574W

Страница 1: ...Alignment and Adjustments 6 Troubleshooting 7 Exploded Views and Parts List 8 PCB Diagrams 9 Schematic Diagrams SAMIL CO One Minute Help Screen Baby Food Frozen Dinner Custom II Custom I Potoato Fresh Vegetable Power Level Auto Start Hold Timer More Less 1 2 3 4 5 6 7 8 9 0 Auto Defrost Auto Reheat Clock Sound Pause Cancel Start Diet Cook Popcorn ...

Страница 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...

Страница 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...

Страница 4: ...S POWER SOURCE 220V 60HZ AC POWER CONSUMPTION MICROWAVE 1 500W OUTPUT POWER FROM 100W TO 1000W 10 LEVEL POWER IEC 705 TEST PROCEDURE OPERATING FREQUENCY 2 450MHz MAGNETRON OM75PH 31 ESS COOLING METHOD COOLING FAN MOTOR OUTSIDE DIMENSIONS 2129 32 W x 1211 32 H x 1628 32 D NET WEIGHT 40 8lbs SHIPPING WEIGHT 46 3 lbs ...

Страница 5: ...nstructions 3 1 Control Panel 3 2 Features External Views Door Ventilation Holes Light Safety Interlock Holes Control Panel Open Door PushButton Guide Roller Glass Tray Door Latches One Minute Help Screen Popcorn Diet Cook Baby Food Frozen Dinner Custom ll Potoato Fresh Vegetable Custom l Power Level Auto Start Hold Timer More Less 1 2 3 4 5 6 7 8 9 0 Auto Defrost Auto Reheat Clock Sound Pause Can...

Страница 6: ...anel of fan motor assembly 6 Take out the fan motor assembly 7 Remove the oven lamp by pulling out from hole of air cover NOTE1 When removing the magnetron make sure that its antenna 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 1 Discharge the hig...

Страница 7: ... C because it is fragile 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 door 4 3 2 Removal of Door C 4 3 3 Removal of Door E Disassembly and Reasse...

Страница 8: ...itor switch and power relay 3 When the above three switches operate properly check if any other part such as the control circuit board blower motor or high voltage transformer is defective 4 4 Replacement of Fuse 4 5 Replacement of Drive Motor Disassembly and Reassembly Screw Drive Motor Cover Base Plate Thermo Switch Drive Motor 4 3 5 Reassembly Test After replacement of the defective component p...

Страница 9: ...cting 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 Therefore applying hot air such as using o...

Страница 10: ... case 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 t...

Страница 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...

Страница 12: ...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 4 187 x 1000 x DT 0 88xMcx T2 T0 Output Power 41 87 41 87 Heating Time sec 4 187 Coefficient for Water 1000 Water cc DT Temperature Rise T2 T1 Mc Cylindrical borosilicate glass weight To Room temperature 5 8 Output Power of Magnetron Alignment a...

Страница 13: ... Check for Microwave Leakage 5 13 1 Record keeping and notification after measurement 1 After adjustment and repair 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 n...

Страница 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...

Страница 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...

Страница 16: ...ploded Views and Parts List 7 1 Exploded Views 7 1 M1 M2 M21 M22 D6 M25 M26 M11 M13 M14 M15 M12 M16 M17 M18 M19 M20 M3 M4 M5 M6 M30 M29 M31 M7 M8 M9 M10 B1 B2 B2 B4 B3 M27 M28 M23 C1 C2 C3 C4 C5 C6 M24 D1 D2 D3 D5 D8 D4 D9 D7 ...

Страница 17: ...0106A BRACKET HVC SECC T0 8 W31 L125 8 1 M15 DE59 40001A DIODE H V HVR 1X 32B 12 1 M16 DE74 20002A TRAY COOKING GLASS T6 PI360 1 2CUFT NEG 1 M17 DE92 90189J ASSY GUIDE ROLLER D16 5 STD SPS 1 M18 DE67 60002A COUPLER PPS 5GR BRN M97G45 1 M19 DE61 40066A FOOT PP BLK 3RD W 2 M20 DE80 10002A BASE PLATE SGCC T 0 8 W 404 L 633 MW65 1 M21 DE31 10154A MOTOR DRIVE M2HJ49ZR02 ST 16 50 60HZ 1 M22 DE71 60164F ...

Страница 18: ... ZPC3 WHT CE945 1 7 4 Control Parts List Ref No Parts No Description Specification Q ty Remarks C 1 DE66 20006A BUTTON PUSH RESIN ABS HR 0370U P WHT M945 1 C 2 DE61 70076A SPRING BUTTON HSWR PI0 6 1 C 3 DE34 10206A SWITCH MEMBRANE PET 120V 60HZ MW6574W 89 7 200 1 C 4 DE72 70005A CONTROL PANEL ABS VH0853 164G PURE WHT T2 5 1 C 5 DE67 40002A WINDOW DISPLAY RESIN ACRYLIC T2 3 M945 IDEO 1 C 6 RA USA2N...

Страница 19: ...5 PN OUT DE60 10082H SCREW A 2S 4X12 TOOTHED 1 S M EA DE60 10088A SCREW TAP PH PH M3 L8 FEFZY PLAIN 2 DE60 10088A SCREW TAP PH PH M3 L8 FEFZY PLAIN 2 PCB DE60 10098A SCREW ASSY TAP TITE PH TC M4X8 SWRCH18A ZPC2 GLD W 1 CV TCO DE60 10098A SCREW ASSY TAP TITE PH TC M4X8 SWRCH18A ZPC2 GLD W 2 M DRIV DE60 20063A BOLT FLANGE M4 10 ZPC3 YEL MSWR 2 HI LOW DE60 20063A BOLT FLANGE M4 10 ZPC3 YEL MSWR 2 HI ...

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

Страница 21: ...1 8X3 2MM 1 R09 P20 2001 000577 R CARBON 2KOHM 5 1 8W AA TP 1 8X3 2MM 1 R13 P21 2001 000613 R CARBON 3 9KOHM 5 1 8W AA TP 1 8X3 2MM 5 R16 R18 R20 R26 R27 P21 2001 000613 R CARBON 3 9KOHM 5 1 8W AA TP 1 8X3 2MM 3 R28 R29 R30 P22 2001 000780 R CARBON 470OHM 5 1 8W AA TP 1 8X3 2MM 2 R01 R02 P23 2001 000786 R CARBON 47KOHM 5 1 8W AA TP 1 8X3 2MM 5 R31 R32 R33 R34 R35 P23 2001 000786 R CARBON 47KOHM 5 ...

Страница 22: ... FOR SERVICE REPLACEMENT USE 16GA 105ßC THERMOPLASTIC COVERED WIRE EXCEPT FOR HIGH VOLTAGE LEADS OR AS NOTED ON SPECIAL LEADS 1 INPUT 120V 60HZ 2 DOOR OPEN 3 LAMP ON 4 P C B PATTERN 5 P C B IN OUT POINT MGT TCO COM NC 120V 130V 40W 21V 0V NO L FM DM P C BOARD DOOR SENSING SWITCH CON2 H V DIODE 80ßC OFF 70ßC ON 160ßC OFF 60ßC ON BLK BLK R RED RED ORG WHT BLK WHT ORG ORG WHT BLK BLK MAGNETRON HIGH V...

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