KitchenAid KAC-48, Technical Education

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5-
DOOR INTERLOCK SWITCHES
Refer to page 4-16 for the procedure for
accessing the door interlock switches.
1. Unplug microwave oven or disconnect
power.
2. Disconnect the wires from the interlock
switch terminals.
3. Set the ohmmeter to the R x 1 scale.
4. Touch the ohmmeter test leads to the ter-
minals of the primary or secondary switch
(normally open). The meter should indi-
cate an open (infinite) circuit.
5. Touch the ohmmeter test leads to
the terminals of the monitor switch
(normally closed). The meter should indi-
cate a closed (0
Ω
) circuit.
NOTE: Pressing the actuator button on the
switches should result in opposite read-
ings (normally open should read closed, and
normally closed should read open).
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.
WARNING
AC LINE FILTER
Refer to page 4-12 for the procedure for ac-
cessing the AC line filter.
1. Unplug microwave oven or disconnect
power.
2. Discharge the AC line filter by touching
the leads of a 20,000
Ω
resistor from each
of the filter leads to the chassis ground.
3. Disconnect the AC line filter wires from the
filter terminals.
4. Set the ohmmeter to the R x 1 scale.
5. Touch the ohmmeter test leads to the fol-
lowing AC line filter terminals:
1 to 3 (coil) = less than 1
Ω
.
2 to 4 (coil) = less than 1
Ω
.
6. Set the ohmmeter to the R x 10K scale.
7. Touch the ohmmeter test leads to AC line
filter terminals 3 and 4 (resistor). The me-
ter should indicate between 550 K and
800 K
Ω
.
2
1
5
4
3