10
Microwave service manual – Model:
microMD UK
6. Magnetron removal
1) Disconnect the leadwire from the high voltage
transformer and high voltage capacitor.
2) Remove the air guide.
3) Carefully remove the mounting screws holding
the magnetron and the waveguide.
4) Remove the magnetron until the tube is clear
from the waveguide.
7. Fan assembly removal
1) Release the screws and take out the fan
assembly.
2) Separate the fan motor, fan guide and fan.
8. High voltage capacitor and diode
removal
1) Discharge the high voltage capacitor.
2) Disconnect the leadwire from fan motor, noise
filter and high voltage capacitor.
3) Remove the screw holding the Orifice ASS’Y to
the oven cavity and remove the high voltage
diode earth screw.
3) Remove the screw holding the capacitor
bracket.
9. Removing the turntable motor
1) Disconnect the wire and remove the turntable
motor on the top of the cavity.
2) Turn the whole unit over 90 degrees. Loose
screw and remove the bottom cover.
3) Disconnect the wire and take out the turntable
motor.
4) After replacing the motor, fix the cover back to
the base plate.
Waveguide
Magnetron
Gasket
Magnetron
Dome
Waveguide
Bracket
.
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 5mW/cm
2
. (With a 275ml.
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.
