Panasonic NN-GS597M, Service Manual

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9. Remove 2 screws holding air guide B on magnetron & on
base plate respectively, then remove air guide B.
10. Disconnect 2 lead wires from fan motor terminals.
11. Disconnect lead wires from noise filter (U) terminals.
12. Release locking tabs of reinforce bracket A hanging on both
sides of oven cavity, then withdraw the reinforce bracket A
outside slightly.
NOTE:
Pay attention to the sharp edges of reinforce
bracket A.
13. Hold the reinforce bracket A, then remove 4 screws holding
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.
CAUTION
When replacing the magnetron, be sure the antenna gasket is in
place.
6.2. Digital programmer circuit
(D.P.C.) DU and low voltage
transformer
1. Remove 5 screws holding board cover & D.P.C. board DU
on the reinforce bracket A.
2. Disconnect all connectors on D.P.C. board DU.
3. Remove D.P.C. board DU.
4. Using solder wick or a desoldering tool and 30W soldering
iron carefully to remove all solder from the terminal pins of
the low voltage transformer and/or power relays.
NOTE:
Do not use a soldering iron or desoldering tool of
more than 30 watts on D.P.C. contacts.
5. With all the terminal pins cleaned and separated from
D.P.C. contacts, remove the defective transformer/power
relays. Replace components making sure all terminal pins
are inserted completely, then resolder all terminal contacts
carefully.
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NN-GS597M