Thermador SMW 272 B, Service Manual, Page: 64 / 84

Page 62
Lower O ven Section SMW O ven Service Manual
T H E CON VECT ION FAN MOTOR
Refer to Page 42 to access the convection fan
motor.
1. W ith no power applied, disconnect the motor
wire connectors from their terminals.
2. Set the ohmmeter to the R x 1 scale.
3. Touch the ohmmeter leads to the motor ter-
minals. The meter should indicate 12
Ω
.
4. If the reading is not correct, remove and
replace the convection fan motor.
T H E LAMP T RAN SFORMER
Refer to Pages 56 to access the lamp transformer.
1. W ith no power applied, remove the wires
from the terminals of the lamp transformer.
2. Set the ohmmeter to the R x 1 scale.
3. Touch the ohmmeter leads to the primary
terminals. The meter should indicate 9
Ω
.
4. Touch the ohmmeter leads to the secondary
terminals. The meter should indicate 2
Ω
.
5. If the readings are not correct, remove and
replace the lamp transformer.
Primary
Winding
Secondary
Winding
10
6
1
5
Convection Fan Motor
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