LG LMVM2277ST Service Manual page 17

D. REMOVING MAGNETRON
(Figures 8 and 9)
(1) Remove the outer case. See page 7-5.
(2) Remove the damper bracket.
(3) Disconnect the transformer leadwire.
(4) Remove four tap tite screws securing the
transformer to the bottom plate.
(5) Remove two screws securing the fan motor to the
air duct and bottom plate.
(6) Remove four tap tite screws securing the
magnetron to the wave guide.
(7) Remove the magnetron VERY CAREFULLY.
NOTES:
• When removing the magnetron, make sure that its
dome does not hit any adjacent parts, or it may be
damaged.
• 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.
• After replacing the magnetron, check for microwave
energy leakage with a survey meter Check
microwave energy leakage must be below the limit
of 5 mW/cm 2 . (All service adjustments should be
made for minimum microwave energy leakage
readings.)
Fan Motor
Assembly
Figure 8
Damper bracket
Transformer
Figure 9
E. REMOVING STIRRER FAN
(Figures 10 and 11)
(1) Remove one screw securing it to the oven upper
plate by using knife blade.
(2) Pull out the stirrer fan cover.
(3) Remove the stirrer fan.
Magnetron
7-7
Figure 10
Figure 11