Panasonic NE-C1275, Руководство по обслуживанию, Страница: 18 / 38

7.7. Convection Heater
1. Remove 10 screws holding back panel.
2. Disconnect heater and circulation fan motor lead wire
connector.
3. Remove a screw holding exhaust guide.
4. Remove 5 screws holding heater panel.
5. Slide up heater panel unit to release from oven cavity.
6. Remove 6 screws holding heater support and heater.
NOTE:
After oven has been used the internal surface of the
cavity may become permanently dark.
Please note this condition is normal and it does not
affect ovens performance.
CAUTION
1. High voltage is present at the high voltage terminal of the high
voltage transformer during any cook cycle.
2. It is neither necessary nor advisable to attempt measurement of
the high voltage.
3. Before touching any oven components, or wiring, always unplug
the oven from its power source and discharge the high voltage
capacitor.
8.1. High voltage transformer
1. Remove connections from the transformer terminals and
check continuity.
7.8. Upper Heater
1. Disconnect upper heater lead wire connector.
2. Remove 1 screw holding heater support.
3. Remove the heater by pulling it out.
2. Normal (cold) resistance readings should be as follows:
Secondary winding - Approx. 80
Ω
~ 120
Ω
Filament winding - Approx. 0
Ω
Primary winding (0V - 240V). Approx. 0
Ω
~ 3
Ω
8 COMPONENT TEST PROCEDURE
18
NE-C1275 / NE-C1475