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 tab 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.
9. Seperate H.V. Inverter from Inverter bracket by freeing 3
catch hooks on the Inverter bracket.
13
NN-SD698S / NN-ST678S / NN-ST658W
Summary of Contents for NN-SD698S
Page 2: ...2 NN SD698S NN ST678S NN ST658W ...
Page 3: ...3 NN SD698S NN ST678S NN ST658W ...
Page 5: ...1 SCHEMATIC DIAGRAM 5 NN SD698S NN ST678S NN ST658W ...
Page 23: ...8 6 How to check the semiconductors using an OHM meter 23 NN SD698S NN ST678S NN ST658W ...
Page 24: ...9 EXPLODED VIEW AND PARTS LIST 9 1 EXPLODED VIEW 24 NN SD698S NN ST678S NN ST658W ...
Page 33: ...10 DIGITAL PROGRAMMER CIRCUIT 10 1 NN SD698S 33 NN SD698S NN ST678S NN ST658W ...
Page 34: ...34 NN SD698S NN ST678S NN ST658W ...
Page 35: ...10 2 NN ST678S 35 NN SD698S NN ST678S NN ST658W ...
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Page 37: ...10 3 NN ST658W 37 NN SD698S NN ST678S NN ST658W ...
