High Voltage Capacitor, High Voltage Transformer - Thermador CM301B Service Manual

CM Oven Service Manual
HIGH VOLTAGE CAPACITOR
CAUTION: DISCHARGE THE HIGH VOLT-
AGE CAPACITOR BEFORE TESTING IT.
REFER TO PAGE 18 FOR THE PROCEDURE.
Refer to Page 18 to access the high voltage
capacitor. To test the high voltage capacitor,
perform the following steps.
1. Turn off the electrical power to the oven.
2. Set the ohmmeter to the R x 10K scale.
3. Disconnect the wires from the capacitor
terminals.
4. Touch the test leads to the capacitor termi-
nals. The meter should indicate a high
resistance, and then gradually begin to
fall back toward infinity.
5. Switch the test leads and the meter should
again indicate a high resistance, and gradu-
ally fall back toward infinity.
Terminals
HIGH VOLTAGE TRANSFORMER
Tan Lead
(secondary)
CAUTION: DISCHARGE THE HIGH VOLT-
AGE CAPACITOR BEFORE TESTING THE
TRANSFORMER. REFER TO PAGE 18 FOR
THE PROCEDURE.
Refer to Page 19 to access the high voltage
transformer. To test the high voltage trans-
former, perform the following steps.
1. Turn off the electrical power to the oven.
2. Set the ohmmeter to the R x 1 scale.
Testing The Primary Winding
3. Disconnect the black and white wires from
the primary terminals of the transformer.
4. Touch the test leads to the primary termi-
nals. The meter should indicate less than
1 Ω.
Testing The Secondary Windings
5. Disconnect the two orange transformer
wires from the magnetron terminals.
6. Touch the test leads to the orange wire
connectors. The meter should indicate less
than 1 Ω.
7. Disconnect the light tan transformer wire
from the high voltage capacitor.
8. Touch one of the test leads to the chassis
and the other lead to the tan wire connec-
tor. The meter should indicate less than
1 Ω.
Page 52
Lit. No. 94-30-006B
Orange Leads
(secondary)
Primary
Terminals