LG LMC1575BD, Service Manual

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5-6
F. AIR DUCT ASSEMBLY / REMOVAL
1) Remove the mounting screw to the magnetron.
G. MAGNETRON REMOVAL
1) Disconnect the lead wire from the magnetron.
2) Carefully remove the mounting screws holding the magnetron and the
waveguide.
3) Remove the magnetron ASS’Y until the tube is clear from the waveguide.
NOTE:
1. When removing the magnetron, make sure its dome does not hit any
adjacent parts, or it may be damaged.
2. When replacing the magnetron, be sure to install the magnetron gasket in
the correct position and be sure that the gasket is in good condition.
3. After replacing the magnetron, check for microwave leakage with a survey
meter around the magnetron. Microwave energy must be below the limit of
5 mW/cm
2
. (With a 275 ml. water load). Make sure that gasket is rigidly
attached to the magnetron. To prevent microwave leakage, tighten the
mounting screws properly, making sure there is no gap between the
waveguide and the magnetron.
4. Magnetron is hot, after operation of oven.
H. REMOVING THE TURNTABLE MOTOR
1) Remove the turntable, rotating ring and shaft.
2) Lay the unit down on its back.
3) Remove the turntable motor cover.
The turntable base cover is easily removed by pinching the eight parts with
a wire cutting.
4) Disconnect the leadwire from the turntable motor terminals.
5) Remove the screw securing the turntable motor to the oven cavity ASS’Y.
6) After repairing the motor, rotate the removed turntable motor cover.
7) Fit the turntable motor cover’s projecting part to the base plate slit.
8) The taptite screw shall be used when a turntable motor cover is secured
with a screw.
NOTE:
1. Remove the wire lead from the turntable motor VERY CAREFULLY.
(Removing cover can cause sharp burr. Use gloves.)
2. Be sure to grasp the connector, not the wires, when removing.
Waveguide
Air duct
Magnetron
Magnetron
Gasket
Magnetron
Dome
Waveguide
Bracket
Wire Leads
Turntable Motor
Taptite Screw