Panasonic NN-S560BF, NN-S560WF, NN-L530BF service manual Inverter Warning

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DANGER OF HIGH VOLTAGE AND HIGH TEMPERATURE (HOT/LIVE) OF THE INVERTER POWER SUPPLY (U)

INVERTER WARNING

This Inverter board looks like a regular PCB. However, this PCB drives the magnetron tube with extremely high voltage

and high current.

NEW HV

IT HAS: 1. Very high voltage and high current circuits.

It functions the same as the high voltage transformer and high voltage capacitor in ordinary microwave ovens.

2.Aluminum heat sink is energized with very high voltages and high heat energy.

3.Very high voltage may remain in circuitry even when oven is off. High voltage may remain in the capacitors on the board.

DO NOT:

*1. Do not touch circuitry because it has very hot (high voltage) circuitry. Even when replacing board, extreme care should be taken to avoid possible electric shock hazards. High voltage may remain in circuit.

*2. Do not touch aluminum heat sink because it is very hot in high voltage and also very hot in high heat energy.

*3. Do not try to adjust or tamper with preset volume on the Inverter board because it is very dangerous to adjust without proper test equipment.

*4. Do not test oven while Inverter grounding plate or screws are loose. It is very dangerous to operate H.V. Inverter Circuit (U) with loose mounting screws or if improperly grounded.

*5. For USA only:

Do not try to repair Inverter PCB because it is very dangerous to repair it. Replace as whole High Voltage Inverter Circuit unit and return fully re-packed with original shipping box and shipping materials.

INVERTER POWER SUPPLY DIAGRAM

H.V INVERTER(U) * 3

LEAD

WIRE

GROUNDING PLATE * 4

INVERTER

SUPPORT

BRACKET OF ORIFICE

HEAT SINK

HIGH VOLTAGE

(RECTIFIER BRIDGE)

TRANSFORMER

CHOKE COIL

FILM CAPACITORS

 

CURRENT

VARISTOR

TRANSFORMER

 

SAND BAR

 

RESISTOR

PRIMARY WINDINGS

 

SECONDARY

 

WINDINGS

PCB

 

 

HIGH VOLTAGE

 

DIODES

 

DO NOT TOUCH

 

 

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Contents RPH Model refer to the last Microwave OvenContents Inverter Warning Control Panel Feature ChartStop/Reset Pad Operation Scroll Display Operation and Digital Programmer Circuit Test ProcedureChild Schematic Diagram APH Schematic Diagram CPH Description of Operating Sequence Variable power cooking controlInverter Power Supply Circuit NEW H,V Variable Power CookingSensor Cooking NN-S560BFAPH/CPH NN Explanation of the Auto Sensor Cooking processSensor Reheat NN-S560BFAPH/CPH,NN-S560WF APH/CPH Inverter Warnings NEW H.V Check the groundingMicrowave Radiation Confirm after repairDisassembly and Parts Replacement Procedure Door assembly Until alignment is achievedSteam Sensor Inverter Power Supply U Membrane key board Membrane switch assembly Primary Latch Switch, Secondary Secondary LatchSwitch and Power Relay B Interlocks Short Switch & MonitorSteam Sensor and Digital Programmer Circuit Measurements and Adjustments Measurement of microwave output1min. test Procedure for Measuring Microwave Energy Leakage Procedure for measuring radiation leakageRecord keeping and notification after measurement Symptom Cause Corrections Troubleshooting GuideDPC Troubleshooting of Inverter Circuit U and Magnetron NEW H.V Trouble Related to Digital Programmer Circuit Exploded View and Parts List Ref.No Part name & Description Pcs Remarks Set Parts ListFAN Motor 4T0 Ref.No Part name & Description Pcs Remarks Set Door AssemblyEscutheon Base Assembly Packing and Accesories Wiring Material Digital Programmer Circuit Parts ListDigital Programmer Circuit Page Page Model for Latin America & Mexico