KitchenAid KBMS1454R - Door Interlock Switches & Lamp Transformer Testing

5-3
WARNING
Electrical Shock Hazard
Disconnect power before servicing.
Replace all parts and panels before operating.
Failure to do so can result in death or electrical shock.
Refer to page 4-6 for the procedure for access-
ing the door interlock switches.
1. Unplug microwave oven or disconnect
power.
2. Disconnect the wires from the switch ter-
minals.
3. Set the ohmmeter to the R x 1 scale.
4. Touch the ohmmeter test leads to the
terminals of the primary or secondary
interlock switch (normally-open). The
meter should indicate an open circuit (in-
finite).
5. Touch the ohmmeter test leads to the
terminals of the monitor interlock switch
(normally-closed). The meter should indi-
cate a closed circuit (0 Ω).
NOTE: Pressing the actuator button should
result in opposite readings (normally-open
should read closed, and normally-closed should
read open).
DOOR INTERLOCK SWITCHES
Refer to page 4-8 for the procedure for access-
ing the lamp transformer.
1. Unplug microwave oven or disconnect
power.
2. Disconnect one of the wire connectors
from the LOAD and LINE transformer ter-
minals.
3. Set the ohmmeter to the R x 1 scale.
4. Touch the ohmmeter test leads to the
LOAD transformer terminals. The meter
should indicate less than 1 Ω.
5. Touch the ohmmeter test leads to the
LINE transformer terminals. The meter
should indicate approximately 45 Ω.
LAMP TRANSFORMER