8.1. Magnetron
1. Discharge the high voltage capacitor.
2. Remove 2 screws holding magnetron thermal cutout
bracket.
3. Disconnect 2 high voltage lead wires from magnetron
filament terminals.
4. Remove 4 screws holding the magnetron.
NOTE: After replacement of the magnetron, tighten
mounting screws properly making sure there is no gap
between the waveguide and the magnetron to prevent
microwave leakage.
8.2. Digital programmer circuit
(DPC) and membrane key
board.
NOTE: Be sure to ground any static electric charge built up
on your body, before handling the DPC.
1. Disconnect all connectors from D.P.C.
2. Remove 3 screws holding escutcheon base and slide the
escutcheon base upward slightly.
3. Remove flat cable of CN5.
4. Remove 5 screws holding DPC.
To replace switch PCB.
5. Remove 2 knobs.
6. Remove 6 screws.
To replace buttons
1. Remove escutcheon bracket from escutcheon base by
freeing 6 catch hooks on the escutcheon base.
2. Replace whole button assembly.
8.3. Low voltage transformer
and/or power relays
NOTE: Be sure to ground any static electric charge built up
on your body before handling the DPC.
1. Using solder wick or a desoldering tool and 30W soldering
iron, carefully 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 DPC contacts.
2. With all the terminal pins cleaned and separated from DPC
contacts, remove the defective transformer/power relays
and install new transformer/power relays making sure all
terminal pins are inserted completely. Resolder all terminal
contacts carefully.
8 DISASSEMBLY AND PARTS REPLACEMENT
PROCEDURE
14
NN-C2000P / NN-C2000W
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