Component Testing - Whirlpool SPEEDCOOK GH6208 XR Technical Education

IMPORTANT: Before performing any tests on
the microwave oven, be sure to observe the
following:
• Unplug microwave oven or disconnect
power.
• Remove the lead wires from the related
component before conducting any of the
following tests.
• Discharge the inverter before conducting
any of the following tests.
• All operational checks using microwave en-
ergy must be done with the microwave oven
loaded with a minimum of 8 oz. (250 mL) of
water in a microwave safe container.
Disconnect power before servicing.
Replace all parts and panels before operating.
Failure to do so can result in death or electrical shock.
BASE THERMOSTAT
Refer to page 4-3 for the procedure for access-
ing the base thermostat.
1. Unplug microwave oven or disconnect
power.
2. Disconnect one of the wires from the
base thermostat terminals.
3. Set the ohmmeter to the R x 1 scale.
4. Touch the ohmmeter test leads to the
thermostat terminals. The meter should
indicate an open (infinite) circuit.

COMPONENT TESTING

Electrical Shock Hazard
• Conduct a microwave energy test after
performing any tests or repairs to the mi-
crowave oven.
• Check that all wire leads are in the correct
position before operating the microwave
oven.
• Grasp wire connectors when removing the
wire leads from microwave oven parts.
• All testing must be done with an ohmmeter
having a sensitivity of 20,000 ohms-per-
volt DC or greater, and powered by at least
a 9-volt battery.
EXHAUST FAN MOTOR
Refer to page 4-3 for the procedure for ac-
cessing the exhaust fan motor.
1. Unplug microwave oven or disconnect
power.
2. Disconnect the exhaust fan motor con-
nector from the main harness connector.
3. Set the ohmmeter to the R x 1 scale.
4. Touch the ohmmeter test leads to the mo-
tor plug pins. The meter should indicate
as follows:
Pin 1 (BK) to pin 2 (WH) = 17 ±5 Ω.
Pin 1 (BK) to pin 3 (RD) = 21 ±5 Ω.
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