KitchenAid KEBS278SSS Technical Guide - Page 65

Component Testing

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COMPONENT TESTING UPPER OVEN COMPONENTS Before testing any of the components, perform the following checks: • The most common cause for control failure is corrosion on connectors. Therefore, disconnecting and reconnecting wires will be necessary throughout test procedures. • All tests/checks should be made with a VOM or DVM having a sensitivity of 20,000 ohmsper-volt DC, or greater. • Check all connections before replacing components, looking for broken or loose wires, failed terminals, or wires not pressed into connectors far enough. • Voltage checks must be made with all connectors attached to the boards. • Resistance checks must be made with power cord unplugged from outlet, and with wiring harness or connectors disconnected. 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. BLOWER MOTOR OVEN TEMPERATURE SENSOR Refer to page 4-16 for the procedure for accessing the blower motor. 1. Unplug oven or disconnect power. 2. Set the ohmmeter to the R x 1 scale. 3. Touch the ohmmeter test leads across wire connector terminals. The meter should indicate between 181 and 240 Ω. Refer to page 4-11 for the procedure for accessing the oven temperature sensor. 1. Unplug oven or disconnect power. 2. Set the ohmmeter to the R x 1K scale. 3. Touch the ohmmeter test leads across wire connector terminals. The meter should indicate approximately 1091 Ω @ 75°F (23.9°C). 5-1

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5-1
COMPONENT TESTING
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
UPPER OVEN COMPONENTS
Check all connections before replacing com-
•
ponents, looking for broken or loose wires,
failed terminals, or wires not pressed into
connectors far enough.
Voltage checks must be made with all con-
•
nectors attached to the boards.
Resistance checks must be made with power
•
cord unplugged from outlet, and with wiring
harness or connectors disconnected.
Before testing any of the components,
perform the following checks:
The most common cause for control failure
•
is corrosion on connectors. Therefore, dis-
connecting and reconnecting wires will be
necessary throughout test procedures.
All tests/checks should be made with a VOM
•
or DVM having a sensitivity of 20,000 ohms-
per-volt DC, or greater.
OVEN TEMPERATURE SENSOR
BLOWER MOTOR
Refer to page 4-16 for the procedure for ac-
cessing the blower motor.
1.
Unplug oven or disconnect power.
2.
Set the ohmmeter to the R x 1 scale.
3.
Touch the ohmmeter test leads across wire
connector terminals. The meter should
indicate between 181 and 240
Ω
.
Refer to page 4-11 for the procedure for ac-
cessing the oven temperature sensor.
1.
Unplug oven or disconnect power.
2.
Set the ohmmeter to the R x 1K scale.
3.
Touch the ohmmeter test leads across wire
connector terminals. The meter should
indicate approximately 1091
Ω
@ 75
°
F
(23.9
°
C).