5-5
F. MAGNETRON REMOVAL
1) Remove rear cover assembly.
2) Disconnect the leadwire from damper motor, damper
motor switch, MGT thermostat.
3) Disconnect the leadwire from the high voltage
transformer and magnetron.
4) Remove the screw holding the damper assembly.
5) Remove the damper assembly.
6) Carefully remove the mounting screws holding the
magnetron and the wave guide.
7) Remove the magnetron until its dome is clear from
the wave guide.
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.
G. FAN MOTOR ASSEMBLY REMOVAL
1) Remove rear cover assembly.
2) Remove the three screws holding the fan motor
assembly.
3) Remove the fan motor assembly to the rear cover
assembly.
H. HIGH VOLTAGE CAPACITOR, FUSE,
TRANSFORMER AND DIODE REMOVAL
1) Remove rear cover assembly.
2) Discharge the high voltage capacitor.
3) Disconnect the leadwire from transformer,
magnetron, Fuse and capacitor.
4) Remove the screw holding the transformer and
remove the high voltage diode earth screw.
Fan Motor Assembly
H.V. Capacitor
H.V. Diode
H.V. Transformer
H.V. Fuse
H.V.C BKT
Magnetron Thermostat
Bracket Assembly
Magnetron Thermostat
Magnetron
LGE Internal Use Only
Copyright © 2007 LG Electronics. Inc. All right reserved.
Only for training and service purposes
