Duke DSO 500, Service Manual

Page: 63 / 80

63
HIGH VOLTAGE TRANSFORMER
REPLACEMENT
General
The high voltage transformers, Figure 32, are lo-
cated directly under the oven top panel at left and
right center. The transformers work in conjunction
with two high-voltage capacitors and rectifiers
located directly behind each transformer.
Figure 32. High Voltage Transformer
Replacement Procedure
1. Disconnect and isolate the oven from the
power source.
2. Remove the oven top panel to gain access to
the magnetron transformers and capacitors.
WARNING
THE HIGH VOLTAGE CAPACITORS MUST BE
DISCHARGED BEFORE PERFORMING ANY
WORK ASSOCIATED WITH THE TRANS-
FORMER CIRCUITRY. WAIT AT LEAST FIVE
(5) MINUTES AFTER SHUTDOWN OF HIGH
VOLTAGE SYSTEM.
3. Discharge the high voltage capacitor as
described in the paragraph DISCHARGING
THE HIGH VOLTAGE SYSTEM ON THE
DUKE SPEED OVEN.
4. Unplug and label all spade connectors from
the transformer.
5. Note orientation of transformer, then remove
transformer mounting screws and remove
transformer unit.
6. Orient and install the replacement transformer
unit.
7. Replace and secure all mounting screws.
8. Securely reattach the spade connectors.
9. Reinstall the oven top panel.
REPAIR PROCEDURES