Panasonic NN-L750WB Bedienungsanleitung

Table Of Contents

COVER

1 Inverter Warning

2 Feature Chart

3 Control Panels

4 Operation And Digital Programmer Circuit Test Procedure

4.1 Word Prompting

4.2 Setting the Clock

4.3 Child Safety Lock

4.4 Microwave Cooking and Defrost

4.5 Grill Operation

4.6 Convection with Preheating

4.7 Convection without Preheating

4.8 Combination Cooking (Grill and Microwave)

4.9 Combination Cooking (Convection and Microwave)

4.10 Combination Cooking (Convection and Grill)

4.11 Combination Cooking (Convection, Grill and Microwave)

4.12 Auto Defrost

4.13 Auto Weight Programs

4.14 Auto Weight Program Panacrunch (NN-L760WB)

5 Schematic Diagram

6 Wiring Diagram

7 Description of Operating instruction

7.1 Variable power cooking control

7.2 Grill Cooking

7.3 Auto weight defrost, Auto weight Cook

7.4 Convection Cooking

7.5 Combination Cooking

8 Cautions to Be Observed When Troubleshooting

8.1 Check the grounding

8.2 Inverter Warnings

8.3 When parts must be replaced, remove the power plug from the outlet.

8.4 When the 10A fuse is blown due to the operation of the short switch:

8.5 Avoid inserting nails, wire etc. through any holes in the unit during operation.

8.6 Confirm after repair

8.7 Sharp Edges

9 Parts Replacement Procedure

9.1 Magnetron

9.2 Inverter power supply (U)

9.3 Digital Programmer Circuit (DPC)

9.4 Low voltage transformer and/or power relays (RY1)

9.5 Fan Motor

9.6 Door disassembly

9.7 Turntable Motor

9.8 Quartz Heater

9.9 Convection Element And Circulation Fan Motor

9.10 Temperature Sensor

10 Component Test Procedure

10.1 Primary Latch Switch, Secondary Latch Switch and power relay B interlocks.

10.2 Short Switch and Monitor Circuit

10.3 Magnetron

10.4 Push Button Keyboard

10.5 Inverter Power Supply

10.6 Inverter Power Supply Unit

10.7 Temperature Sensor

11 Measurements and Adjustments

11.1 Installation of primary latch switch, secondary latch switch and short switch.

11.2 Measurement of microwave output

12 Troubleshooting guide

13 Digital Programmer Circuit Troubleshooting Guide

14 Main Parts List

15 Exploded View

16 Door Assembly

17 Escutcheon Base

18 Packing And Accessories

19 Trim Kit Accessories

20 Noise filter component parts

21 Digital programmer Circuit

22 Key Board Matrix

23 Digital programmer circuit parts list

23.1 J603L4V10EP/10UP/40EP/40UP DPC AU

23.2 J603Y4V00BP DPC DU

Service Manual

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Order Number MOP00100019C2

Microwave Oven

●NN-L750WB/NN-L760WB

27L

WHITE

EPG Continental Europe

UPG France

•@

1 Inverter Warning

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The inverter board looks like a regular PCB, however, this PCB drives the magnetron tube using very

high voltages and current.

It has

1. Very high voltage and high current

2. An Aluminium heat sink that becomes very hot

3. The capacitors on the inverter circuit will contain a high voltage charge even when the oven is

not operating.

Do not

1. Do not touch the circuitry as it contains very high voltages. When replacing the board please

take extreme care to avoid possible electric shock. High voltages may remain in the circuit.

2. Do not touch the aluminium heat sink as it will become very hot. It also contains high voltages.

3. Do not attempt to repair the inverter PCB as this can be very dangerous. Replace the high

voltage inverter circuit as a complete unit. Return the old unit fully repacked in the original

shipping box and completed paper work.

4. Do not adjust or tamper with the preset volume on the inverter board. It is very dangerous to

adjust this preset without proper test equipment.

5. Do not test the oven while the inverter grounding strip or screws are loose. It is very

dangerous to operate the inverter circuit board with out a proper ground connection.

Figure 1

Inverter Power Supply Diagram

Figure 2

Inverter Layout

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2 Feature Chart

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NN-750WB NN-750WB NN-760WB NN-760WB

Function EPG UPG EPG UPG

Microwave 4 4 4 4

Grill 1 1 1 1

Convection 17 17 17 17

Combination Yes Yes Yes Yes

Weight Defrost 2 2 2 2

Weight Combination 8 8 5 5

Weight Reheat 1 1 - -

Weight Cook 2 2 2 2

Weight Crisp - - 5 5

Stage Cooking 1 Stage 1 Stage 1 Stage 1 Stage

Delay / Stand Yes Yes Yes Yes

Clock 24 Hour 24 Hour 24 Hour 24 Hour

Word Prompt *1 French *1 French

*1 None, Italian, Spanish, Dutch, French, Greek, Portuguese, Polish, English

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3 Control Panels

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