– 34 –
The oven must be
removed to access the capacitor.
(See
Oven Removal / Partial Removal
.
) The capacitor
is located behind the top access cover. A single
Phillips-head screw attaches the capacitor and
diode to the oven chassis.
Diode
Screw
Note
When disconnecting the wires and diode from
1.
the capacitor, note wire and diode locations.
The capacitor wires have locking tabs. It is
2.
helpful to
fi
rst remove the capacitor, capacitor
bracket, and diode as one assembly.
The electrical terminal ends, which attach to
3.
the high-voltage capacitor have locking tabs
on them. These tabs cannot be seen because
they are encased in plastic. To remove these
terminals, grasp the top and bottom of the
terminal with needle-nose pliers. Gently squeeze
the pliers jaws together while pulling the
electrical terminal from the capacitor.
E
LECTRICAL
TERMINAL
RELEASE
/ L
OCKING
T
AB
S
HOWN
WITH
PLASTIC
COVERING
REMOVED
Magnetron TCO
Magnetron and Magnetron TCO
WARNING:
Always be certain the capacitor
is discharged before servicing. (See
Capacitor
and Diode.
) Use electrician's discharge pliers
and electrician's gloves under Kevlar gloves or
equivalent protective gloves when discharging the
capacitor.
Note:
The capacitor has an internal discharge
resistor that automatically discharges the capacitor
when the oven turns OFF. Under normal operation,
the capacitor should fully discharge within 30
seconds.
The magnetron converts the high voltage supplied
by the transformer, capacitor, and diode into radio
frequency waves of electromagnetic cooking
energy.
The oven must be
removed to access the
magnetron. (See
Oven Removal / Partial Removal
.
)
The magnetron is located behind the top access
cover. The top access cover is held in place by 2
Phillips-head screws. The magnetron is held in place
by 4 Phillips-head screws. The magnetron TCO
bracket must be removed and the
fi
lament wire
harness must be disconnected before removing the
magnetron.
To check the magnetron
fi
lament for continuity it is
necessary to disconnect the
fi
lament wire harness.
The magnetron
fi
lament has a resistance value of
less than 1
Ω
.
Filament Wire Harness
Magnetron
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