Microwave Output Test; High-Voltage Transformer Test; Figure 012-11: High-Voltage Transformer With Test Points Marked; Table 012-2: High-Voltage Transformer Checks - Miele H 408 BM Series Technical Information

H 408x BM
Danger!
After installation is completed, as a matter of standard practice, check the
oven for a tight seal with a microwave leak detector, paying particular attention
to the door and the housing edges.
4.11

Microwave Output Test

1. Fill a heat-proof glass container (e.g., a teacup) with 4 ounces of water.
2. Use a thermometer to measure the initial temperature (T
3. The temperature should be between 50°F and 68°F.
4. Put a glass baking bowl on the lowest rack of the oven.
5. Set the glass cup in the middle of the bowl.
6. Heat the water at maximum output (1000 watts) for 60 seconds.
7. Carefully stir the water.
8. Use a thermometer to measure the final water temperature (T
9. If the increase in temperature (T
microwave output is in order.
4.12

High-Voltage Transformer Test

1. Remove the appliance from its cabinet; see Section 011-4.3.
2. Remove the screws securing the appliance lid. Remove the lid.
Danger!
Before performing any service or repair work, discharge the high-voltage
capacitor. See Section A-2.
3. Disconnect both primary connections from the transformer.
4. Use an ohmmeter to perform the following checks:
Check #
1
2
3

Table 012-2: High-Voltage Transformer Checks

Figure 012-11: High-Voltage Transformer with Test Points Marked

Test Point (first meter
lead position)
A
C
E (ground)
37
Technical Information
– T ) is at least 110°F or 120°F, the
E A
Test Point (second
meter lead position)
B
D
F
).
A
).
E
Reading Status
0.5 to 1 Ω OK
0.2 to 0.6 Ω OK
40 to 60 Ω OK