Disassembly And Parts Replacement Procedure; Magnetron; Digital Programmer Circuit (D.p.c) - Panasonic NN-T695 Service Manual

NN-T695 NN-T685SF
4 DISASSEMBLY AND PARTS REPLACEMENT
PROCEDURE
4.1.

Magnetron

1. Discharge high voltage charge.
2. Remove 1 screw holding air guide A on the oven cavity.
3. Remove 1 screw holding air guide B.
4. Remove 1 screw holding themistor.
5. Disconnect 2 high voltage lead wires from magnetron
filament terminals.
6. Remove 4 screws holding the magnetron.
NOTE:
After replacement of the magnetron, tighten mounting
screws properly in an x pattern, making sure there is no
gap between the waveguide and the magnetron to
prevent microwave leakage.
When replacing the magnetron, be sure the antenna gasket is in
place.
CAUTION
4.2. Digital programmer circuit
(D.P.C)
NOTE:
Before handing the D.P.C ensure that your body is
connected to ground to discharge any electric charge.
1. Disconnect all connectors from D.P.C.
2. Remove 1 grounding screw.
3. Remove 1 screw holding escutcheon base and slide the
escutcheon base upward slightly.
4. Remove 1 screw holding D.P.C.
5. Release lock of connector CN6 by pushing both levers to
inside pull upward, and remove flat cable of membrane
keyboard.
6. Separate D.P.C board from tabs on the escutcheon base
and remove D.P.C board.
NOTE:
1. The membrane key board is attached to the
escutcheon base with double faced adhesive tape.
Therefore, applying hot air such as using a hair dryer is
recommended for smoother removal.
2. When installing new membrane key board, make
sure that the surface of escutcheon base is cleaned
sufficiently so that any problems (shorted contacts or
uneven surface) can be avoided.
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