The Line Fuse, High Voltage Rectifier (Diode), & High Voltage Capacitor - Whirlpool GM8155XJQ Job Aid

THE LINE FUSE, HIGH VOLTAGE RECTIFIER (DIODE),
Refer to page 2-12 for the procedure for servic-
ing the line fuse, and page 2-13 for the high
voltage rectifier (diode) and high voltage ca-
pacitor.
1. Disconnect the electrical power to the
microwave oven.
Line Fuse W/Fuseholder
2. To test the line fuse:
a) Unclip the fuse from the fuseholder.
b) Set the ohmmeter to the R x 1 scale.
c) Touch the ohmmeter leads to the ends
of the fuse. The meter should indicate
continuity if the fuse is good. If the fuse
is open, the meter will indicate infinity.
High Voltage Rectifier (Diode)
Anode
3. To test the high voltage rectifier:
a) Disconnect the diode lead from the high
voltage capacitor.
& HIGH VOLTAGE CAPACITOR
Cathode
b) Set the ohmmeter to the R x 10K scale.
c) Touch the positive ohmmeter lead to
the anode lead of the diode and the
negative lead to the cathode. The meter
should indicate continuity.
Reverse the ohmmeter leads on the
diode and the meter should indicate
infinity.
High Voltage Capacitor
4. To test the high voltage capacitor:
a) Disconnect the diode and wires from
the high voltage capacitor terminals.
b) Set the ohmmeter to the R x 10K scale.
c) Touch the ohmmeter leads to the ca-
pacitor terminals. The meter should in-
dicate several thousand ohms, and
gradually return to infinity.
3-3