Panasonic NN-A750WB, Руководство по обслуживанию

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1. Remove the escutcheon bracket from the escutcheon
base by freeing the 4 catch hooks on the escutcheon
base.
2. Peel away the display window from the inside of the base.
3. Remove the membrane assembly by pushing from the
inside of the base and then peeling away from the outside
surface.
NOTE:
1. The escutcheon key board is attached to the escutcheon
base with double faced adhesive tape. Therefore, apply-
ing hot air such as using a hair dryer is recommended for
smoother removal
2. When installing a new escutcheon key board, make sure
that the surface of the escutcheon base is cleared suffi-
ciently so that problems such as, shorted contacts and
uneven surfaces can be avoided.
3. When replacing the silver escutcheon sheet (NN-
A720MB) ensure that the escutcheon sheet is earthed to
the back-plate via the earth strip.
Removal of DPC AU and DPC DU
Figure 4
Grounding of the silver escutcheon
Figure 5
9.4. Low voltage transformer and/
or power relays (RY1)
Note
Be sure to ground your body to discharge any static
before handling the DPC.
1. Using a solder wick or a de soldering tool and a 30W sol-
dering iron, carefully remove all solder from the terminal
pins of the low voltage transformer and/or power relays.
2. With all of the terminal pins cleaned and separated from
the DPC contacts, remove the defective transformer/
power relays and install the new components making
sure that the terminal pins are inserted completely. Care-
fully re solder all terminal contacts carefully.
Note
Do not use a soldering iron or de soldering tool of more
than 30 watts on DPC contacts
9.5. Fan Motor
1. Remove two screws and remove the tie bar
2. Disconnect the two lead wires from the fan motor termi-
nals
3. Disconnect all lead wires from the noise filter
4. Remove the noise filter
5. Remove the air guide by removing the two screws
6. Remove the two screws holding the orifice assembly
7. Remove the two screws holding the fan motor assembly
8. Detach the orifice assembly and the fan motor assembly
from the oven assembly.
9. Remove the fan blade from the fan motor by pulling out-
ward.
Removing the fan motor
Figure 6
9.6. Door disassembly
1. Remove door C from door E by carefully pulling outward
starting from the upper right hand corner using a flat
blade screwdriver.
2. Remove four screws holding the door E to the door A
assembly
3. Remove the door screen B by carefully un-clipping the