4.8. Inverter power supply
CAUTIONS
1. Always leave the grounding plate in place.
2. Always securely tighten the ground screw through the bottom of the
chassis (base).
3. Securely connect 3 lead wire connectors.
4. Make sure the heat sink has enough space (gap) from the oven.
Take special care not to dress any lead wire over the aluminum heat
sink because it is hot.
1. Discharge high voltage charge.
2. Remove the H.V.lead wire from magnetron terminals.
3. Disconnect 2 connectors from CN701 & CN702 on
H.V.Inverter(U).
4. Remove 1 screw holding grounding plate to the base.
5. Bend back 1 locking metal tabs on the base.
6. Press 1 encircled locking tab and then slide 4 locking tabs
of Inverter bracket at the bottom of the base in direction of
arrows.
7. Remove 1 screw holding H.V.Inverter to Inverter bracket.
8. Remove 1 screw holding grounding plate to H.V. Inverter.
13
NN-SD798S / NN-ST778S / NN-SA768W
Summary of Contents for NN-SA768W
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Page 5: ...1 SCHEMATIC DIAGRAM 5 NN SD798S NN ST778S NN SA768W ...
Page 23: ...8 6 How to check the semiconductors using an OHM meter 23 NN SD798S NN ST778S NN SA768W ...
Page 24: ...9 EXPLODED VIEW AND PARTS LIST 9 1 EXPLODED VIEW 24 NN SD798S NN ST778S NN SA768W ...
Page 33: ...10 DIGITAL PROGRAMMER CIRCUIT 10 1 NN SD778S 33 NN SD798S NN ST778S NN SA768W ...
Page 34: ...34 NN SD798S NN ST778S NN SA768W ...
Page 35: ...10 2 NN ST778S 35 NN SD798S NN ST778S NN SA768W ...
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Page 37: ...10 3 NN SA768W 37 NN SD798S NN ST778S NN SA768W ...
