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6.1. Inverter power supply

CAUTIONS

1. Always leave the grounding plate in place.
2. Always securely tighten the ground screw through the bottom of the
chassis (base).
3. Securely connect 3 lead wire connectors.
4. Make sure the heat sink has enough space (gap) from the oven.
Take special care not to dress any lead wire over the aluminum heat
sink because it is hot.

 1. Discharge high voltage remaining in high voltage capacitor.

 2. Disconnect 2 high voltage lead wires from magnetron

filament terminals.

 3. Disconnect connector CN701 & CN702 from H.V. Inverter

board.

 4. Remove 4 screws holding inverter reinforcement bracket A

on right heater panel & base plate respectively.

 5. Release locking tabs connecting inverter air guide with

inverter bracket.

 6. Remove 1 screw holding H.V.Inverter to Inverter bracket.

 7. Remove 1 screw holding grounding plate to H.V. Inverter.

6 DISASSEMBLY AND PARTS REPLACEMENT

PROCEDURE

10

NN-SF564S / NN-SF564M

Содержание NN-SF564S

Страница 1: ...Panasonic Appliances Microwave Oven Shanghai Co Ltd 2014 NN SF564S NN SF564M RPH MEXICO LATIN AMERICA Microwave Oven ORDER NO PAPMOSH1410035CE...

Страница 2: ...2 NN SF564S NN SF564M...

Страница 3: ...3 NN SF564S NN SF564M...

Страница 4: ...Primary Secondary Interlock Switch Power Relay RL1 15 7 2 Interlock monitor Switch 15 7 3 Magnetron 15 7 4 Inverter power supply U 16 7 5 Temperature thermistor 16 8 MEASUREMENTS AND ADJUSTMENTS 17 8...

Страница 5: ...1 FEATURE CHART 2 CONTROL PANEL 5 NN SF564S NN SF564M...

Страница 6: ...3 SCHEMATIC DIAGRAM 6 NN SF564S NN SF564M...

Страница 7: ...PWM pulse width modulation signal from the microcomputer in the DPC 3 This drives the High voltage transformer to increase voltage up to 2 000V AC 4 Then the half wave doubler voltage rectifier circu...

Страница 8: ...luminum heat sink 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 Invert...

Страница 9: ...any holes in the unit during operation Never 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 antenna and caus...

Страница 10: ...Discharge high voltage remaining in high voltage capacitor 2 Disconnect 2 high voltage lead wires from magnetron filament terminals 3 Disconnect connector CN701 CN702 from H V Inverter board 4 Remove...

Страница 11: ...n an x pattern making sure there is no gap between the waveguide and the magnetron to prevent microwave leakage CAUTION When replacing the magnetron be sure the antenna gasket is in place 6 3 Digital...

Страница 12: ...edge of membrane sheet and peel off escutcheon sheet key board membrane completely from escutcheon base NOTE a The membrane key board is attached to the escutcheon base with double faced adhesive tap...

Страница 13: ...NOTE Do not use a soldering iron or desoldering tool of more than 30 watts on D P C contacts B With all the terminal pins cleaned and separated from D P C contacts remove the defective transformer pow...

Страница 14: ...portion of the door will touch firmly to the oven cavity front plate without pushing the door If the door assembly is not mounted properly microwave power may leak from the clearance between the door...

Страница 15: ...pened Primary Interlock Switch 0 Close Open Secondary Interlock Switch 0 Close Open Power Relay RL1 Open Open 7 2 Interlock monitor Switch 1 Unplug lead wires from Inverter Power Supply U primary term...

Страница 16: ...in the oven s AC power supply cord into outlet 4 Program DPC a Press Timer Clock pad twice b Press Start pad once c Press Micro Power pad once 5 Program oven at High power for 1 minute and press Start...

Страница 17: ...or circuit and all interlock switches again by following the component test procedures 8 2 Measurement of microwave output The output power of the magnetron can be determined by performing IEC standar...

Страница 18: ...trol panel Always touch ground while working on this panel to discharge any static charge in your body 7 120V AC is present on the digital programmer circuit Terminals of power relay s and primary cir...

Страница 19: ...alignment of primary Interlock switch Adjust door and Interlock switches 2 Open or loose connection of high voltage circuit especially magnetron filament circuit NOTE Large contact resistance will cau...

Страница 20: ...and 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...

Страница 21: ...at high power Abnormal IC1 Normal 5V Step2 2 Collector of Q227 Abnormal Q222 and or Q225 Q227 Normal 0 7V RL1 Dark or unclear display 1 Replace display and check operation Normal Display Abnormal IC1...

Страница 22: ...ithout going through this procedure Power will Ammeter reading is To do Remedy Shut off in 23 seconds after Start 1 Between 0 5A and 1 0A Check and repair open magnetron circuit Open magnetron wiring...

Страница 23: ...rt Name Description Pcs Set Remarks DB701 B0FBCR000051 BRIDGE DIODE 1 25A 600V L701 F5020W100AP CHOKE COIL 1 Q701 B1JAGV000017 TRANSISTOR SI 1 1100V T701 F609A8X00AP H V TRANSFORMER 1 Including C706 C...

Страница 24: ...10 EXPLODED VIEW AND PARTS LIST 10 1 EXPLODED VIEW 24 NN SF564S NN SF564M...

Страница 25: ...U 1 LED LAMP INSIDE 22 J61415G10XN MICRO SWITCH 1 PRIMARY INTERLOCK SWITCH 23 F61415U30XN MICRO SWITCH 1 SECONDARY INTERLOCK SWITCH 24 F61459L00XP THERMAL CUTOUT 1 25 F61785U30XN MICRO SWITCH 1 INTER...

Страница 26: ...U 1 SF564S E4 F630YBN50BRP MEMBRANE SWITCH U 1 SF564M E5 F8034BN00SHP ESCUTCHEON BASE 1 E6 F891PBN60SRP DOOR OPENING BUTTON U 1 SF564S E6 F8072BN00SHP DOOR OPENING BUTTON 1 SF564M E7 F80375K00AP COOK...

Страница 27: ...ion Pcs Set Remarks D1 F30186P40AG DOOR KEY A 1 D2 F302ABN60SRP DOOR A U 1 SF564S D2 F302ABN50SQP DOOR A U 1 SF564M D3 F302K9Q30AP DOOR E U 1 D4 F30216P40AG DOOR KEY SPRING 1 D5 F30859Q30AP DOOR C 1 D...

Страница 28: ...10 5 WIRING MATERIALS Ref No Part No Part Name Description Pcs Set Remarks W1 F030ABN50RP LEAD WIRE HARNESS 1 W2 F030E 1R90 H V LEAD WIRE 1 W3 F0353BN50QP THERMISTOR HARNESS 1 28 NN SF564S NN SF564M...

Страница 29: ...0003BN50RP INSTRUCTION MANUAL 1 P2 F0102BN60SRP PACKING CASE PAPER 1 SF564S P2 F0102BN50SRP PACKING CASE PAPER 1 SF564M P3 F01049Q30AP UPPER FILLER 1 P4 F01059Q30AP LOWER FILLER 1 P5 F01067C50AP P E B...

Страница 30: ...11 DIGITAL PROGRAMMER CIRCUIT 11 1 SCHEMATIC DIAGRAM 30 NN SF564S NN SF564M...

Страница 31: ...31 NN SF564S NN SF564M...

Страница 32: ...SHEET 1 DISP1 HOLDER F66179L60XP LCD HOLDER 1 VA1 D4EAY271A036 ZENER RESISTOR 1 270V VA2 VA3 D4EAY112A036 ZENER RESISTOR 2 1100V IC1 MN69F009KC1 L S I 1 PC25 B3PAA0000302 IC 1 IC10 C0DBGYY03746 IC 1 I...

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