High Voltage Capacitor & Diode - KitchenAid KBMS1454R Technical Education

Disconnect power before servicing.
Replace all parts and panels before operating.
Failure to do so can result in death or electrical shock.
HIGH VOLTAGE CAPACITOR
& DIODE
HV Capacitor
Refer to page 4-17 for the procedure for ac-
cessing the high voltage capacitor and diode.
1. Unplug microwave oven or disconnect
power.
2. Discharge the high voltage capacitor
using a 20,000 Ω resistor from the ter-
minals to chassis ground.
3. Disconnect the diode and wire leads from
the high voltage capacitor terminals.
WARNING
Electrical Shock Hazard
HV Diode
5-7
4. To test the high voltage capacitor:
a) Set the ohmmeter to the R x 1K scale.
b) Touch the ohmmeter test leads to the
capacitor terminals. The meter should
indicate several ohms, and gradually
return to infinity.
c) Touch one ohmmeter test lead to the
capacitor case. Touch the other test
lead to each of the terminals. The meter
should indicate infinity at both termi-
nals.
5. To test the high voltage diode:
a) Set the ohmmeter to the R x 1K scale.
b) Touch the positive ohmmeter test lead
to the anode lead of the diode and the
negative ohmmeter test lead to the
cathode lead. The meter should indi-
cate continuity (0 Ω).
c) Reverse the ohmmeter test leads on
the diode and the meter should indi-
cate infinity.