Parts Replacement Procedure - Panasonic NN-A880WB Service Manual

MICROWAVE GENERATOR OR OTHER PARTS CONDUCTING
MICROWAVE ENERGY
IMPORTANT NOTICE
The following components have potentials above 250V while is
appliance is operated.
- Magnetron
- High voltage transformer (Located on inverter (U))
- High voltage diodes (Located on inverter (U))
- High voltage capacitors (Located on inverter (U))
Pay special attention in these areas.
When the appliance is operated with the door hinges or magnetron
fixed incorrectly, the microwave leakage can reach more than 5mW/
cm . After repair or exchange, it is very important to check if the
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magnetron and the door hinges are correctly fixed.
8.7. Sharp Edges
Caution
Please use caution when unpacking, installing or moving the unit,
as some exposed edges may be sharp to touch and cause injury if
not handled with care.

9. Parts Replacement Procedure

9.1. Magnetron
1. Discharge the high voltage capacitors on the inverter circuit.
2. Remove the five screws shown in figure 1
3. Disconnect the two high voltage leads from the magnetron
4. Remove the four screws holding the magnetron as shown in figure
2
NOTE: After replacing the magnetron, tighten the mounting screws making sure that there is no
gap between the waveguide and the magnetron to prevent microwave leakage.
Caution
When replacing the magnetron, ensure that the antenna gasket is in
place.
Note
The magnetron used for this model is unique for the inverter power
supply system. Make sure to use the magnetron as listed in the
parts list.
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