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5.4. ESCUTCHEON BASE ASSEMBLY

5.4.1. NN-ST657S

Ref. No.

Part No.

Part Name & Description

Pcs/Set

Remarks

E1

F603L8V00QP

D.P.CIRCUIT (AU)

1

ST657S

E3

F800L8V00SQP

ESCUTCHEON BASE (U)

1

ST657S

E6

F80725Y00SAP

DOOR OPENING BUTTON (U)

1

ST657S

E7

F82565Y00AP

DOOR OPENING LEVEL

1

ST657S

E8

F80375K00AP

COOK BUTTON SPRING

1

E9

F630Y8V00BQP

MEMBRANE SWITCH (U)

1

ST657S

E10

F90095X00AP

GROUNDING PANEL

1

ST657S

E15

F00078V00SQP

NAME PLATE

1

ST657S

18

NN-ST657S / NN-ST677M / NN-ST667W / NN-ST657W

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Содержание NN-ST657S

Страница 1: ...rved Unauthorized copying and distribution is a violation of law NN ST657S NN ST677M NN ST667W NN ST657W QPQ Australia New Zealand Microwave Oven Please file and use this manual together with the service manual for Model NN S560WF ORDER NO SIMMC0006012C3 ORDER NO PHAMOS0706032A3 ...

Страница 2: ...2 NN ST657S NN ST677M NN ST667W NN ST657W ...

Страница 3: ...3 NN ST657S NN ST677M NN ST667W NN ST657W ...

Страница 4: ... 9 4 1 Troubleshooting Oven stops operation during cooking 9 4 2 Troubleshooting Other problems 10 4 3 Troubleshooting of inverter circuit U and magnetron NEW H V 11 4 4 Trouble related to Digital Programmer Circuit 12 4 5 Simple way of H V Inverter magnetron troubleshooting 13 4 6 How to check the semiconductors using an OHM meter 14 4 7 H V Inverter main parts list F606YM300BP 14 5 EXPLODED VIEW...

Страница 5: ...1 SCHEMATIC DIAGRAM 5 NN ST657S NN ST677M NN ST667W NN ST657W ...

Страница 6: ...nk may be HOT due to heat energy therefore extreme care should be taken during servicing H V Inverter warning WARNING FOR INVERTER POWER SUPPLY U GROUNDING Check the High Voltage Inverter Power Supply circuit grounding The high voltage inverter power supply circuit board must have a proper chassis ground The inverter grounding bracket must be connected to the chassis If the inverter board is not g...

Страница 7: ...insert a wire nail or any other metal object through the lamp holes on the cavity or any holes or gaps because such objects may work as an antennaand cause microwave leakage 2 6 Confirm after repair 1 After repair or replacement of parts make sure that the screws of the oven etc are neither loosen or missing Microwave might leak if screws are not properly tightened 2 Make sure that all electrical ...

Страница 8: ...following the component test procedures 3 2 Measurement of microwave output The output power of the magnetron can be determined by performing IEC standard test procedures However due to the complexity of IEC test procedures it is recommended to test the magnetron using the simple method outlined below Necessary Equipment 1 liter beaker Glass thermometer Wrist watch or stopwatch NOTE Check the line...

Страница 9: ... discharge any static charge in your body 7 220 240V AC is present on the digital programmer circuit Terminals of power relay s and primary circuit of Digital Programmer Circuit When troubleshooting be cautious of possible electrical shock hazard Before troubleshooting operate the microwave oven following the correct operating procedures in the instruction manual in order to find the exact cause o...

Страница 10: ... of latch switches Open or loose connection of high voltage circuit especially magnetron filament circuit NOTE Large contact resistance will cause lower magnetron filament voltage and cause magnetron to have lower output and or be intermittent Adjust door and latch switches 3 Defective high voltage component H V Inverter Power Supply u Magnetron Check high voltage component according to component ...

Страница 11: ...H99 First you must program the DPC into TEST MODE press Timer Clock pad twice Press Start pad once press Micro Power pad once Program unit for operation H95 H97 H98 H99 appears in display window a short time after start key is pressed and there is no microwave oscillation Alternate way to troubleshoot oven with AC Ampere meter used H95 H97 H98 H99 appears in display window a short time after start...

Страница 12: ...5 Normal 0 7V RY2 No microwave oscillation at any power 1 IC1 pin 1 voltages while operation at high power Abnormal IC1 Normal 3 3V Step2 2 Collector of Q224 Abnormal Q224 Q231 Normal 0 7V Step3 3 Short circuit between collector of Q227 and emitter of Q231 Still not turn on RY1 RY1 turns on Q220 Q222 Dark or unclear display 1 Replace display and check operation Normal Display Abnormal IC1 Missing ...

Страница 13: ...H97 H98 appears in window and oven stops operation Program High power for 1 minute and conduct following test quickly unless H95 H97 H98 appears and oven stops 1 Unplug CN702 2 pin connector and measure voltage between terminals Abnormal 0V 1 Latch Switch 2 D P C Power Relay Normal 220 240V Step2 2 Unplug CN701 3 pin connector and measure pin3 voltage Abnormal 0V D P C Approx AC 3V Magnetron 4 5 S...

Страница 14: ...4N300 FILM CAPACITOR 1 C702 ECQE2505T869 FILM CAPACITOR 1 C703 ECWF2395N632 FILM CAPACITOR 1 DB701 B0FBBS000001 RECTIFIER BRIDGE 1 L701 F5020M300GP CHOKE COIL 1 R702 D0CM352JA002 SAND BAR RESISTOR 1 T701 A609AM300GP TRANSFORMER 1 INCLUDING D701 D702 C706 C707 D701 D702 B0FBAZ000001 DIODE 2 C706 ECWH30562U03 FILM CAPACITOR 1 C707 ECWH30432U04 FILM CAPACITOR 1 14 NN ST657S NN ST677M NN ST667W NN ST6...

Страница 15: ...5 EXPLODED VIEW AND PARTS LIST 5 1 EXPLODED VIEW 15 NN ST657S NN ST677M NN ST667W NN ST657W ...

Страница 16: ...50AP HOOK LEVER C 1 ST657S 16 F31386G30AP HOOK LEVER C 1 ST677M ST667W ST657W 17 F400A6V00QP FAN MOTOR 1 AC240V SINGLE PHASE 50Hz 18 F40084T00AP FAN BLADE 1 19 F40257D00APG AIR GUIDE A 1 20 F41445Y00AP ORIFICE 1 21 A707S4T00AP STEAM SENSOR 1 ST677M ST667W 22 F64508660AP SENSOR COVER B 1 ST677M ST667W 24 F65434W00AP SENSOR COVER C 1 ST677M ST667W 25 F612E8F60QP INCANDESCENT LAMP U 1 26 J61415G10XN ...

Страница 17: ...5 3 WIRING MATERIALS Ref No Part No Part Name Description Pcs Set Remarks W1 F030A8V00QP LEAD WIRE HARNESS 1 W2 F030E4T00CP H V LEAD WIRE 1 17 NN ST657S NN ST677M NN ST667W NN ST657W ...

Страница 18: ...7S E3 F800L8V00SQP ESCUTCHEON BASE U 1 ST657S E6 F80725Y00SAP DOOR OPENING BUTTON U 1 ST657S E7 F82565Y00AP DOOR OPENING LEVEL 1 ST657S E8 F80375K00AP COOK BUTTON SPRING 1 E9 F630Y8V00BQP MEMBRANE SWITCH U 1 ST657S E10 F90095X00AP GROUNDING PANEL 1 ST657S E15 F00078V00SQP NAME PLATE 1 ST657S 18 NN ST657S NN ST677M NN ST667W NN ST657W ...

Страница 19: ...E 1 ST667W E24 F66164W20AP FLAT CABLE 1 ST677M ST667W E25 F82988M60KAP BUTTON 1 ST677M ST667W E26 F80728M60SAP DOOR OPENING BUTTON 1 ST677M E26 F80728M60HAP DOOR OPENING BUTTON 1 ST667W E27 F82566K10AP DOOR OPENING LEVER 1 ST677M ST667W E28 F80375K00AP COOK BUTTON SPRING 1 E29 F630Y8V10BQP MEMBRANE SWITCH U 1 ST677M E29 F630Y8V20BQP MEMBRANE SWITCH U 1 ST667W E35 F00078V10SQP NAME PLATE 1 ST677M E...

Страница 20: ... ST657W E43 F630Y8V30BQP MEMBRANE SWITCH U 1 ST657W E44 F80348F70HQP ESCUTCHEON BASE 1 ST657W E45 F80728F70HQP DOOR OPENING BUTTON 1 ST657W E46 F80375K00AP COOK BUTTON SPRING 1 E47 F82566K10AP DOOR OPENING LEVEL 1 ST657W E55 F00078V30HQP NAME PLATE 1 ST657W 20 NN ST657S NN ST677M NN ST667W NN ST657W ...

Страница 21: ...1 ST677M D2 F301A8F70HQP DOOR A 1 ST667W ST657W D3 F302K5L00AP DOOR E U 1 D4 F30216P40AG DOOR KEY SPRING 1 D5 F30854T00AP DOOR C 1 D6 F31456V60XP DOOR SCREEN A 1 D7 F31468F70BQP DOOR SCREEN B 1 ST677M ST667W ST657W D8 F01726V00JP CAUTION LABEL B 1 D9 F301A8V00SQP DOOR A U 1 ST657S 21 NN ST657S NN ST677M NN ST667W NN ST657W ...

Страница 22: ...028V20HQP PACKING CASE PAPER 1 ST667W P2 F01028V30HQP PACKING CASE PAPER 1 ST657W P3 F01046K50AP UPPER FILLER 1 P4 F01055L00AP LOWER FILLER 1 P5 F01067F00AP P E BAG 1 ST657S P5 F01068100XN P E BAG 1 ST677M ST667W ST657W P6 F01078J00XN DOOR SHEET 1 P7 F00166V20QP NOTICE 1 ST657S P8 F06014T00AP COOKING TRAY 1 P9 F01924T00AP SHEET 1 ST657S P10 F00065G40AP CAUTION LABEL 1 22 NN ST657S NN ST677M NN ST6...

Страница 23: ...6 DIGITAL PROGRAMMER CIRCUIT 6 1 NN ST657S ST657W 23 NN ST657S NN ST677M NN ST667W NN ST657W ...

Страница 24: ...24 NN ST657S NN ST677M NN ST667W NN ST657W ...

Страница 25: ...6 2 NN ST677M ST667W 25 NN ST657S NN ST677M NN ST667W NN ST657W ...

Страница 26: ...26 NN ST657S NN ST677M NN ST667W NN ST657W ...

Страница 27: ...6 3 2 NN ST677M ST667W Ref No Part No Part Name Description Pcs Set Remarks BZ310 L0DDEA000014 BUZZER 1 2 0KHz C10 AECETK1V561B AL CHEM CAPACITOR 1 560µF 35V C13 C16 AECETS1C220B AL CHEM CAPACITOR 2 22µF 16V C482 AECETS1H010B AL CHEM CAPACITOR 1 1µF 50V C483 AECETS1HR47B AL CHEM CAPACITOR 1 0 47µF 50V C485 AECETS1H2R2B AL CHEM CAPACITOR 1 2 2µF 50V CX320 EFOEC8004A4 CERAMIC RESONATOR 1 8 0MHz DISP...

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