Panasonic NE1257A, NE1258A, NE1757A, NE2157A Service Manual
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Panasonic
Service Bulletin
Date:
August, 2001
Number:
NE1018 -1757
Product:
Commercial Microwave Oven
Model(s):
NE1257A, NE1258A, NE1757A,
NE2157A.
Apply this bulletin while performing
routine service or to avoid intermittent
F86 / F87 error codes.
Symptom:
F86 / F87 failure codes or in some instances, F81
F82 failure codes appear on the display after the
oven has been used for an extended period of time.
Fig. 1
Cause:
When foods with high moisture content are heated in
the oven, steam escaping through a small opening
between the exhaust duct and cavity (fig. 1 & 2) settles
on the bottom (foil) side of the DP board (fig.3). This
causes the formation of a conductive white residue
especially in the area of connector CN9.
CN9
Fig. 2
See Back
Place this Service Bulletin with respective Service Manuals
WARNING! This Service Bulletin is designed for experienced repair technicians only and is not designed for use by the general public. It does
not contain warnings or cautions to advice non-technical individuals of potential dangers in attempting to service a product. Products powered
by electricity should be serviced by experienced professional technicians. Any attempt to service or repair the product or products dealt
with in this Service Bulletin by anyone else could result in serious injury or death.
© 2001 Panasonic. All ri
hts reserved. Unauthorized copying and distribution is a violation of law.
Fig. 3
Panasonic
Home and Commercial Products Company
Procedure:
1. Remove and inspect the foil side of the DP (Digital Programmer) board for evidence of
residue.
2. Important: If there is evidence of residue, clean the affected area with a stiff bristle brush
(toothbrush or equivalent) until all traces of residue are removed.
3. Re-install the DP board and re-attach connectors.
4. Apply a small bead of General Electric Sealant IS802 to the area indicated in Fig. 4 below.
Verify that the small gap (space) is completely sealed.
o The silicone sealer is available in a 2.8 fl. Oz. tube and may be ordered directly from
the Panasonic National Parts Center in Kent Washington. 1-800-833-9626.
o Part Number for Silicone Sealer: 63072
Apply Bead of Silicone
to this area
Space
Fig. 4
Panasonic
Home and Commercial Products Company
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