Antenna, Turntable, Hv Capacitor - GE SpaceMakerXL JMV1420 Technical Service Manual

ANTENNA
A motor drives the antenna assembly and is located at the
top of the cavity. This oven uses a top feed wave guide. The
antenna blade rests on a depression inside the antenna
cover. An antenna motor shaft fits into the assembly to drive
it. When the antenna cover is removed the antenna slides off
the antenna motor shaft.
COUPLER
Coupler drive motor must
be removed prior to remov-
ing coupler
To Remove Antenna Motor:
1. Disconnect power and remove grille.
2. Remove antenna/light cover.
3. Release wiring to motor.
4. Remove two screws (snubby screwdriver) holding motor to
waveguide.
5. Lift and remove motor.
TURNTABLE
The turntable shelf is made of a ceramic type material and
the supporter ring that it rests on is plastic. The shelf also
sits on and is turned by the motor coupling, which can turn in
either direction. The turntable shelf must be used when using
oven. The turntable motor is mounted to the bottom of the
cavity. The bottom plate of the microwave covers the motor
and has to be lowered to gain access to the two screws that
secure motor.
To Remove Turntable:
1. Disconnect oven from power supply.
2. Remove ceramic shelf and supporter from cavity.
3. Remove 3 screws securing bottom plate to unit and rotate
down.
4. Disconnect motor leads, two screws holding motor, motor
coupler will stay in oven.
5. When reinstalling motor it will have a "D" shaft on it that
will match the coupling.
NOTE: The turntable motor is 23V, and is NOT interchange-
able with the antenna motor.
STIRRER
MOTOR
STIRRER
COVER
TURNTABLE
DRIVE MOTOR
20
To Remove the Antenna:
1. Carefully pry down, using a very small (pocket) flat
blade screwdriver, the push pin (fastener) located in
the antenna cover.
2. Turn the antenna cover counterclockwise, this will
free the tabs that are captured by the spaces built into
the ceiling.
ANTENNA (stirrer blade)
Can be accessed from
inside oven
removing stirrer cover.
GLASS
TURNTABLE
TURNTABLE
SUPPORT
HIGH VOLTAGE CAPACITOR
The high voltage capacitor should always be discharged
by shorting a terminal with I or 2 screwdrivers or with I
screwdriver with a grounded wire attached. The capacitor
has an internal discharge "shunt" resistor, but this me-
chanical discharge procedure should always be followed
for personal safety.
If the capacitor is open, no high voltage will be available to
the magnetron. Disconnect input leads and check for
short or open between the terminal using an ohmmeter.
cavity by