10/24/2016
XML Service Manual
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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.
CAUTION
When connecting 2 filament lead wires to the magnetron terminals, be sure to connect the
lead wires in the correct position. The lead wire of high volatge transformer should be
connected to “F terminal” and
the lead wire from high voltage
capacitor should be connected to
“FA terminal”.
4.2 Digital programmer circuit (D.P.C) AU, membrane
key board and power relay
NOTE:
Be sure to ground any static electric charge built up on your body before handling the DPC.
1. Draw out water tank from escutcheon base.
2. Pull out tube A connecting to pump from copper pipe.
3. Remove all wiring connectors from D.P.C. board AU.
4. Remove 1 grounding screw holding on cavity front plate.
5. Open the door of oven, slide the escutcheon base upward and out slightly.
6. Remove 3 screws holding D.P.C. board AU on escutcheon base.
7. Release connector CN7ʼs lock of D.P.C. board AU by pushing both levers inside and pull upward slightly, then remove
flat cable of membrane key board.
To replace membrane key board
8. Use tools such as knife etc. to poke from 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.
4.3 Digital programmer circuit (D.P.C.) DU and low
voltage transformer
1. Remove red connector CN9 from D.P.C. board AU.
