Digital Programmer Circuit (D.p.c) Au, (D.p.c.) Hu, Membrane Key Board And Power Relay; Fan Motor - Panasonic NN-GS597M Service Manual

NN-GS597M
6.3. Digital programmer circuit
(D.P.C) AU, (D.P.C.) HU,
membrane key board and
power relay
CAUTION
Be sure to ground any static electric charge built up in
your body before handling the DPC.
1. Remove water tank from escutcheon base.
2. Keep pressing [Steam Deforst] pad for more than 2
seconds to drain the water remaining in the water pipes and
tubes into oven cavity.
3. Pull out tube A connecting to pump from copper pipe.
4. Remove 5 screws holding board cover & D.P.C. board DU
on the reinforce bracket A.
5. Disconnect all connectors on D.P.C. board DU.
6. Remove D.P.C. board DU.
7. Disconnect all wiring connectors on D.P.C. board HU.
8. Remove 1 screw holding escutcheon base on cavity front
plate.
9. Open the door of oven, slide the escutcheon base upward
and out slightly.
10. Remove 2 flat cables connecting between D.P.C. board HU
and AU from connectors CN13 & CN20 on D.P.C. board HU
by pulling upward slightly.
11. Remove 2 screws holding D.P.C. board HU on escutcheon
base, then remove D.P.C. board HU.
12. Remove 5 screws holding backstop on escutcheon base.
13. Remove 2 screws holding D.P.C. board AU (big one) on
escutcheon base.
14. Release locking tabs holding D.P.C. board AU (big one) on
escutcheon base then remove 5 screws holding D.P.C.
board AU (small one) on backstop to remove D.P.C. board
AU.
15. Disconnect 1 flat cable connected from the membrane
keyboard to connector CN7 on the D.P.C. board AU.
To replace membrane key board
16. Use tools such as kinfe etc. to lift the edge of escutcheon
sheet and peel off escutcheon sheet and membrane key
board completely from escutcheon base.
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.
6.4.

Fan motor

1. Disconnect 2 lead wires from fan motor terminals.
2. Remove 2 screws holding air guide B on magnetron & on
base plate respectively, then remove air guide B.
3. Remove 2 screws holding fan motor and detach fan motor
from oven assy.
4. Remove fan blade from fan motor shaft by pulling it straight
out.
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