Panasonic NN-T559WB Service Manual Download Page 1

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ORDER NO. MOP9905005C2

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

Service Manual

Microwave Oven

NN-T559WB

NN-T559CB

NN-T589WB

Specifications:

Power Source:

240 V AC Single Phase, 50 Hz

Power Requirements:

Microwave: 1280W

Output: (IEC705-88)

900W

Microwave Frequency:

2,450Mhz

Timer:

99 min. 99 sec.

Oven Cavity Size:

27L

Outside Dimensions:

510mm (W) X 380mm (D) X 304mm (H)

Inside Dimensions:

359mm (W) X 352mm (D) X 217mm (H)

Weight:

11.5 Kg

Inverter Power Supply

Output power:

IEC705-88 Test procedure

Specifications subject to change without notice

Summary of Contents for NN-T559WB

Page 1: ...WB Specifications Power Source 240 V AC Single Phase 50 Hz Power Requirements Microwave 1280W Output IEC705 88 900W Microwave Frequency 2 450Mhz Timer 99 min 99 sec Oven Cavity Size 27L Outside Dimens...

Page 2: ...y 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 Eve...

Page 3: ...an Motor 13 6 6 Door disassembly 14 6 7 Turntable motor 14 6 8 Steam Sensor NN T589WB 14 7 COMPONENT TEST PROCEDURE 15 7 1 Primary Latch Switch Secondary Secondary Latch Switch and Power Relay B Inter...

Page 4: ...sion Pad 11 Weight Selection Pads 12 More Less Pads 13 Stop Cancel Pad Before Cooking One press clears your instructions During Cooking One press temporarily stops the cooking program Another press ca...

Page 5: ...Y 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...

Page 6: ...o weight program CHILLED MEAL SET WEIGHT 2 Press to select grams or pounds and ounces LB OZ CHILLED PIZZA SET WEIGHT 3 Enter the weight 1LB OZ PRESS START H 1 00 PRESS START MIN SEC 1 00 1H 00 H 1 00...

Page 7: ...s 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 RY1 SYMBOL COLOUR OR ORANGE BL...

Page 8: ...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...

Page 9: ...ating the T2 time by using the formula below make sure this 10 seconds is subtracted from the T1 time In other words the T1 time starts at the end of the 10 second period 2 T1 Time The total amount of...

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...

Page 11: ...nto 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...

Page 12: ...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 st...

Page 13: ...en surface can be avoided 6 4 Low voltage transformer and or power relays RY1 NOTE Be sure to ground any static electric charge built up on your body before handling the DPC 1 Using solder wick or a d...

Page 14: ...Perform the microwave leakage test 6 7 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 cu...

Page 15: ...d magnetron 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 f...

Page 16: ...ally switches to remaining time cooking T2 6 The remaining cooking time T2 appears in the display window If the following cooking times appear Steam Sensor function is normal HEAT SINK CHOKE COIL SAND...

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...

Page 18: ...mer 3 Defective DPC AU or DPC DU 2 No display and no operation at all Fuse is blown 1 Shorted lead wire harness 2 Defective primary latch switch NOTE 1 3 Defective short switch NOTE 1 4 Defective Inve...

Page 19: ...TIONS NEW H V CLOCK DELAY STAND START HIGH POWER DISPLAY 4N00BPQ DISPLAY 4N10BPQ NN T589WB H97 H98 appears in the Check magnetron filament OK Check Inverter input AC AC 240V Check Inverter control sig...

Page 20: ...e than 0 5A 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 ov...

Page 21: ...on 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...

Page 22: ...22 10 EXPLODED VIEW AND PARTS LIST 1 2 5 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 34 35 36 37 4 3 4 40 38 39 33 41 42...

Page 23: ...4 E4008 1640 FAN BLADE 1 15 XTWANE4 12B SCREW 1 FOR MAGNETRON 16 2M236 M42E2 MAGNETRON 1 17 E030E4N30BP HV LEAD WIRE 1 18 E610T6700BP OVEN LAMP 1 19 E20994N30BP BRACKET A 1 20 E40254N30BP AIR GUIDE A...

Page 24: ...D6 D7 D5 Ref No Part No Part Name Description Pcs Set Remarks D1 E302A4N00HBP DOOR A SCREEN B ASSY 1 NN T589WB NN T559WB D1 E302A4N00BP DOOR A SCREEN B ASSY 1 NN T559CB D2 E30214000AP DOOR KEY SPRING...

Page 25: ...SCUTCHEON BASE 1 NN T559WB NN T589WB E3 E80344L10BP ESCUTCHEON BASE 1 NN T559CB E4 E81274L10BP ESCUTCHEON BACK PLATE 1 E5 E603L4N10BP DPC AU 1 NN T589WB E5 E603L4N00BP DPC AU 1 NN T559WB NN T559CB E6...

Page 26: ...P OPERATING INSTRUCTIONS 1 P4 E01695750BP SERVICE CENTER LIST 1 P5 E01134N30BP TRAY STYROL 1 P6 E01024N10HBP CARTON BOX 1 NN T589WB P6 E01024N00HBP CARTON BOX 1 NN T559WB P6 E01024N00BP CARTON BOX 1 N...

Page 27: ...s Exploded View Trim Model No Top and Bottom Strip Ref No 1 Pcs Set Side Strip Ref No 2 Pcs Set Microwave Oven Model No NN TKV69W E1603A510HBP 2 E1601A510HBP 2 NN T589WB NN T559WB NN TKV69C E1603A510B...

Page 28: ...28 16 DIGITAL PROGRAMMER CIRCUIT...

Page 29: ...29...

Page 30: ...No Part No Description Qty Remarks CN5 AEEM19FEBVKN 19 PIN CONNECTOR 1 CN1 AEEMMD05507W 7 PIN CONNECTOR 1 RY1 AEGG5G1A12 RELAY 1 RY2 RY3 AEBGG5N1A12 RELAY 2 12V D1 ERZV10D511CS VARISTOR 1 D2 D3 ERZV1...

Page 31: ...J683V CHIP RESISTOR 9 68K Ref No Part No Description Qty Remarks CN5 AEEM19FEBVKN 19 PIN CONNECTOR 1 CN1 AEEMMD05507W 7 PIN CONNECTOR 1 RY1 AEGG5G1A12 RELAY 1 12V RY2 RY3 AEBGG5N1A12 RELAY 2 12V D1 ER...

Page 32: ...ty Remarks R1 ERG1SJ753P RESISTOR 1 75K 1W C1 C2 AECQJ5225KX1 CAPACITOR 2 2 2 f C3 C4 ECKMNA472ME CAPACITOR 2 4700pF 250V AC L1 E621A4J00XN INDUCTOR 1 2 4mH GND E03594080BP EARTH WIRE 1 F1 E62316010BP...

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