Transformer (1T1) Removal; High-Voltage Capacitor Test - Miele H 408 BM Series Technical Information

Technical Information
Danger!
After installation/repair is completed, as a matter of standard practice, the
appliance has to be checked for a tight seal with a microwave leak detector,
paying particular attention to the door and the housing edges.
4.13

Transformer (1T1) Removal

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. Remove the transformer retaining screws.
4. Disconnect all connections from the transfomer.
5. Disconnect connections between the transformer and the high-voltage
capacitor.
Note:
When re-installing the transformer, tighten the retaining screws securely to
ensure a good ground connection.
Danger!
After installation/repair is completed, as a matter of standard practice,
the appliance has to be checked for a tight seal with a microwave leak
detector, paying particular attention to the door and the housing edges.
4.14

High-Voltage Capacitor 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. Pull both connectors off the high-voltage capacitor.
4. Use a multimeter to measure the capacitance between the two terminals.
Compare with the capacitance stated on the data plate.
5. Or: Use the highest range of an ohmmeter to measure the resistance
between the two terminals of the capacitor.
6. The reading must start at zero ohms and go up to about 10 megaohms.
7. Reverse the positions of the measuring points. The result must be the same.
Danger!
After installation/repair is completed, as a matter of standard practice, the
appliance has to be checked for a tight seal with a microwave leak detector,
paying particular attention to the door and the housing edges.
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H 408x BM