Panasonic NN-V359WB Service Manual Download Page 1

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ORDER NO. MOP9905001C2

© 1999 Matsushita Electric Industrial Co., Ltd.
All rights reserved. Unauthorized copying and
distribution is a violation of law.

Service Manual

Microwave Oven

NN-V359WB

Specifications:

Power Source:

240 V AC Single Phase, 50 Hz

Power Requirements:

Microwave: 1100W, Grill: 1210W, Maximum: 1890W

Output: (IEC705-88)

900W

Microwave Frequency:

2,450Mhz

Timer:

99 min. 99 sec.

Oven Cavity Size:

20L

Outside Dimensions:

458mm (W) X 315mm (D) X 299mm (H)

Inside Dimensions:

315mm (W) X 298mm (D) X 208mm (H)

Weight:

12 Kg

Inverter Power Supply

Output power:

IEC705-88 Test procedure

Specifications subject to change without notice

Summary of Contents for NN-V359WB

Page 1: ...er Source 240 V AC Single Phase 50 Hz Power Requirements Microwave 1100W Grill 1210W Maximum 1890W Output IEC705 88 900W Microwave Frequency 2 450Mhz Timer 99 min 99 sec Oven Cavity Size 20L Outside Dimensions 458mm W X 315mm D X 299mm H Inside Dimensions 315mm W X 298mm D X 208mm H Weight 12 Kg Inverter Power Supply Output power IEC705 88 Test procedure Specifications subject to change without no...

Page 2: ... energy 3 Very high voltage may remain in the circuitry even when the oven is off High voltages may remain in the capacitors on the board DO NOT 1 Do not touch the circuitry as it becomes very hot high voltage Even when replacing board extreme care should be taken to avoid possible electric shock hazards High voltage may remain in the circuit 2 Do not touch aluminium heat sink because it is very h...

Page 3: ...ltage transformer and or power relays RY1 13 6 5 Fan Motor 13 6 6 Temp sensor thermal protector 13 6 7 Door disassembly 14 6 8 Turntable motor 14 6 9 Quartz heater 14 7 COMPONENT TEST PROCEDURE 15 7 1 Primary Latch Switch Secondary Secondary Latch Switch and Power Relay B Interlocks 15 7 2 Short Switch Monitor Circuit 15 7 3 Magnetron 15 7 4 Push button key board 15 7 5 Inverter Power Supply U 16 ...

Page 4: ...ns or used to time or for standing non cooking time 9 Clock Pad Press the clock pad Using the minute and second pads set the clock 12 hr clock Press clock pad again to stop colons flashing 10 lb oz Conversion Pad 11 Weight Selection Pads 12 Stop Cancel Button Before Cooking One press clears your instructions During Cooking One press temporarily stops the cooking program Another press cancels all y...

Page 5: ...TION DISPLAY 1 Place water load in oven 2 Press Micro Power once to set High Power HIGH SET TIME 3 Set time at 5 sec by pressing 1 sec pad 5 times 4 Press Micro Power pad 3 times to set Medium Power 5 Set for 1 minute by pressing 1min pad once 6 Press start pad Once Once Twice 5 Times 11 PRESS CLOCK 25 5 Times 5 SEC PRESS START HIGH SET TIME MEDIUM Once PRESS START MIN SEC 1 00 MEDIUM 5 SEC 7 When...

Page 6: ...art Delay Stand H 1 00 PRESS START MIN SEC 1 00 MIN SEC 1 00 Delay Stand H 1 00 CHOOSE COOKING MODE 1H 00 1 High 2 Medium 3 Low MIN SEC 1 00 MIN SEC 1 00 OPERATION DISPLAY 1 Press combination COMBINATION SELECT GRILL LEVEL 2 Press stand GRILL 1 SELECT MICROPOWER 3 Select micropower low LOW SET TIME 4 Set cooking time PRESS START 5 Press start OPERATION DISPLAY 1 Select auto weight program CHILLED ...

Page 7: ...TRATION MODE OPERATION DISPLAY 1 Press start 3 times to display lock LOCK OPERATION DISPLAY 1 Press stop cancel 3 times Time of day or colon appears in display 11 25 OPERATION DISPLAY 1 Press clock pad 3 times DEMONSTRATION MODE PRESS ANY KEY OPERATION DISPLAY 1 Press clock pad 3 times 11 25 ...

Page 8: ...icate colours of leadwire connector housing PRIMARY LATCH SW ITCH TOP SECONDARY LATCH SW ITCH BOTTOM OUTSIDE SHORT SW ITCH BOTTOM INSIDE MAGNETRON HIGH VOLTAGE INVERTER POW ER RELAY B RY1 POW ER RELAY RY4 SYMBOL COLOUR OR ORANGE BL BLUE BR BROWN W WHITE Y YELLOW R RED GY GREY B BLACK CAUTION HEAT SINK HOT LIVE VERY HIGH VOLTAGE TEMPERATURE ...

Page 9: ...t cook When those auto control feature is selected and Start pad is pressed 1 The digital programmer circuit determines the power level and cooking time to complete cooking and indicates the operating state in the display The table shows the corresponding cooking times for respective weight by categories 2 When cooking time in the display window has elapsed the oven turns off automatically by the ...

Page 10: ...unding bracket to the chassis ground otherwise this H V Inverter circuit board will expose very high voltage and cause extreme DANGER Be sure to have proper grounding by the grounding plate and screws NEW H V HIGH VOLTAGE REMAINS IN HIGH VOLTAGE CAPACITORS DANGER OF HIGH VOLTAGE AND HIGH TEMPERATURE HOT LIVE OF HEAT SINK HEAT SINK CHOKE COIL SAND BAR RESISTOR CUSTOM I C CN 701 CURRENT TRANSFORMER ...

Page 11: ...into the wall outlet 3 Check for microwave energy leakage Refer to procedure for measuring microwave energy leakage 5 7 Sharp edges WARNING When the 10A 250V fuse is blown due to the operation of short switch you must replace Primary latch switch and short switch Also replace power relay 1 RY1 when the continuity check reads shorted contacts 1 2 CAUTION MICROWAVE RADIATION DO NOT BECOME EXPOSED TO...

Page 12: ...t 4 Remove 1 screw and remove the inverter PCB plus support base from the oven 5 Remove 1 screw to disconnect earth wire to magnetron 6 Remove 4 screws holding inverter power supply board to the Inverter bracket 7 Replace with replacement PCB and follow the steps in reverse CAUTIONS WHILE REPLACING INVERTER POWER SUPPLY U 1 Make sure to leave grounding plate in its place 2 Make sure to securely ti...

Page 13: ...the DPC 1 Using solder wick or a desoldering tool and 30W soldering iron carefully remove all solder from the terminal pins of the low voltage transformer and or power relays NOTE Do not use a soldering iron or desoldering tool of more than 30 watts on DPC contacts 2 With all the terminal pins cleaned and separated from DPC contacts remove the defective transformer power relays and install new tra...

Page 14: ... has no play between the inner door surface and oven front surface If the door assembly is not mounted properly microwave power may leak from the clearance between the door and oven 3 Perform the microwave leakage test 6 8 Turntable motor 1 Remove the motor cover by breaking off at the 8 spots indicated by arrows See Figure NOTE After breaking off the motor cover make sure that cut off portions ar...

Page 15: ...n 1 Isolate magnetron from the circuit by disconnecting the leads 2 A continuity check across magnetron filament terminals should indicate one ohm or less 3 A continuity check between each filament terminal and magnetron case should read open 7 4 Push button key board Check continuity between switch terminals by tapping an appropriate pad on the key board The contacts assignment of the respective ...

Page 16: ...f the cavity reaches 257 F 125 C The device is connected to the DPC on touch control models When the thermal protector exceeds its temperature it will turn off the power to oven cavity and display will go to reset mode The cooking program can be reset after cool down THERMISTOR RESISTANCE VALUE 30K 120K at 10 C 30 C 50 F 86 F HEAT SINK CHOKE COIL SAND BAR CUSTOM I C PHOTO COUPLER CN 701 CURRENT TR...

Page 17: ... using the simple method outlined below Necessary Equipment 1 litre beaker Glass thermometer Wrist watch or stopwatch NOTE Check the line voltage under load Low voltage will lower the magnetron output Take the temperature readings and heating time as accurate as possible 1 Fill the beaker with exactly one litre of tap water Stir the water using the thermometer and record the beaker s temperature r...

Page 18: ...se is blown 1 Shorted lead wire harness 2 Defective primary latch switch NOTE 1 3 Defective short switch NOTE 1 4 Defective Inverter power supply U Refer to component test procedure Page 15 Check adjustment of primary secondary latch switch and short switch including door NOTE 1 All of these switches must be replaced at the same time Refer to adjustment instructions Check continuity of power relay...

Page 19: ...D START HIGH POWER DISPLAY 4L20BP H97 H98 appears in the Check magnetron filament OK Check Inverter input AC AC 240V Check Inverter control signal Approx AC 3V refer to component unplug CN702 and measure unplug CN701 and measure Open 0V 0V DANGER Magnetron DPC board Power Relay Loose relay wiring Latch switch DPC board H V Inverter U NOTE DO NOT try to REPAIR this Inverter Power Supply U Check mag...

Page 20: ...refer to component less than 0 4A Open DANGER Magnetron DPC board Power Delay Loose wiring Latch switch DO NOT try to REPAIR this Inverter Power Supply U display window pares measure at oven plug continuity test procedures HIGH VOLTAGE and also DO NOT RE ADJUST PRESET VOLUME on the board It is very dangerous to repair or adjust without sufficient test equipment because this circuit handles very hi...

Page 21: ...even though the program has been set and the start pad is tapped 1 IC 1 pin 11 voltage while operation Abnormal IC 1 Normal 5V Step 2 2 Short circuit between pin 6 and pin 16 of IC 2 Still not turn on RY 2 RY 2 turns on IC 220 No microwave oscillation at any power setting 1 IC 1 pin 7 and 72 voltages while operation at high power Abnormal IC 1 Normal 7 5V 72 5V Step 2 2 Q220 transistor Abnormal Q2...

Page 22: ...22 10 EXPLODED VIEW AND PARTS LIST 1 2 3 4 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 39 40 41 42 43 44 45 46 47 48 38 5 49 ...

Page 23: ... 1 16 E4008 1640 FANBLADE 1 17 E40314L00GS AIR GUIDE C 1 18 XTWANE4 12B SCREWS 4 FOR MAGNETRON 19 2M236 M42E2 MAGNETRON 1 20 E030E4L00GS H V LEADWIRE 1 21 E610T6700BP OVEN LAMP 1 22 E20994L00GS TIE BAR 1 23 E40254L00GS AIR GUIDE A 1 24 E66014L00GS INVERTER EARTH BRACKET 1 25 E65854L00GS INVERTER SUPPORT BRACKET 1 26 E606Y4L10GP INVERTER 1 27 E10014L00GS BASE PLATE 1 28 E10614L00GS WATER SHEILD 1 2...

Page 24: ...ng disassembly D1 D2 D3 D4 D5 D6 D7 Ref No Part No Part Name Description Pcs Set Remarks D1 E302A4L20HBP DOOR A SCREEN B ASSEMBLY 1 D2 E30214000AP DOOR KEY SPRING 1 D3 E30184L00GS DOOR KEY A 1 D4 E302K4L00GS DOOR E AND SCREEN A UNIT 1 D5 E31454L00GS SCREEN A 1 D6 E30854L00GS DOOR C 1 D7 E30064L00GS UPPER HINGE 1 ...

Page 25: ... Set Remarks E1 E80724L10HBP DOOR OPENING BUTTON 1 E2 E80378AOAG DOOR BUTTON SPRING 1 E3 E80344L10HBP ESCUTCHEON BASE 1 E4 E81274L10BP ESCUTCHEON BACK PLATE 1 E5 E603L4L20BP DPC AU 1 E6 E66164L00GS RIBBON CABLE 1 E7 E82564L10BP DOOR OPENING LEVER 1 E8 E603Y4L20BP DPC DU 1 E9 E83264L10BP DISPLAY SHEET 1 E10 E00074L20BP NAME PLATE 1 E11 E83374L20HBP ESCUTCHEON SHEET 1 ...

Page 26: ...SSEMBLY 1 P2 E06435870GS WIRE RACK FOOT 3 P3 E290D6150WN ROLLER RING 1 P4 E06014L00BP GLASS TRAY 1 P5 E00034L20BP INSTRUCTION BOOK 1 P6 E01695750BP SERVICE CENTER LIST 1 P7 E01084L00GS TRAY PACKING 1 P8 E01054L00BP LOWER FILLER 1 P9 E01024L20HBP CARTON BOX 1 P10 E01074L00GS DOOR SHEET 1 P11 AEE01066Q0BP VINYL COVER 1 P12 E01044L00BP UPPER FILLER 1 ...

Page 27: ...t No Description Qty Remarks R1 ERG1SJ753P RESISTOR 1 75KΩ 1W C1 C2 AECQJ5225KX1 CAPACITOR 2 2 2µf C3 C4 ECKMNA472ME CAPACITOR 2 4700pF 250V AC L1 E621A4J00XN FILTER COIL 1 2 4mH GND E03594080BP EARTH WIRE 1 F1 E62316010BP FUSE HOLDER 1 10A 250V AC ...

Page 28: ...28 15 DIGITAL PROGRAMMER CIRCUIT ...

Page 29: ...29 ...

Page 30: ...GSYJ683V CHIP RESISTOR 9 68KΩ Ref No Part No Description Qty Remarks CN5 AEEM19FEBVKN 19 PIN CONNECTOR 1 CN1 AEEMMD05507W 7 PIN CONNECTOR 1 RY1 RY4 AEGG5G1A12 RELAY 2 12V RY2 RY3 AEBGG5N1A12 RELAY 2 12V D1 ERZV10D511CS VARISTOR 1 D2 D3 ERZV10D112C1 VARISTOR 2 1C25 AEICP25011HL PHOTOCOUPLER 1 D26 AESTS1WBA60B DIODE BRIDGE 1 BZ310 EFBAH20C001 BUZZER 1 2KHz IC10 ETXMJ197X1BG SWITCH POWER SUPPLY 1 CN3...

Page 31: ...31 NOTES ...

Page 32: ...32 NOTES SM K PEN S 4L20BP Printed in the UK ...

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