LG MC-784DC Service Manual page 21

Microwave/grill/ convection oven
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D. REMOVING CONTROL PANEL
ASSEMBLY AND PCB ASSEMBLY
1) Disconnect the leadwire from the PCB SUB ASM.
2) Remove the screws for the earth and securing the
control panel.
3) Lift control panel assembly from the oven by the tab
unhooked.
4) Remove three screws securing the PCB SUB ASM
from the control panel.
5) Remove the digitron window.
NOTE : Remove the leadwire and connector VERY
CAREFULLY. Be sure to grasp the connector
and not the wires.
E. MAGNETRON REMOVAL
1) Disconnect the leadwire from high voltage
transformer and high voltage capacitor.
2) Carefully remove the mounting screws holding the
magnetron and the waveguide.
3) Remove the magnetron assembly until the tube is
clear from the waveguide.
NOTES
1. When removing the magnetron, make sure its dome
does not hit any adjacent parts, or it may be
damaged.
Wave Guide
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
energy leakage with a survey meter around the
magnetron. Microwave energy must be below the limit
of 5mW/cm
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.
Oven Lamp
Air Duct
14
2
. (With a 275 ml. water load).
Noise Filter Ass'y
Fan Motor
Guide Suction
Magnetron
PCB ASSEMBLY
CONTROL PANEL
H.V Capacitor
H.V.C Bracket
H.V Diode
C. Protector

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Mc-785dcMc-785bc

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