Magnetron Test; Magnetron (G2) Removal - Miele H 408 BM Series Technical Information

H 408x BM
the two terminals of the magnetron (filament). The ohmmeter has to be
able to measure in the milliohm (mΩ) range, and the reading must be less
than one ohm (1Ω).
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.
4.8

Magnetron 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 magnetron connections.
4. Using an ohmmeter (per IEC 6557-2) with a measuring capability of at
least 500 volts, measure the resistance between one of the two terminals
and the metal housing of the magnetron.
5. The reading must be infinite ∞.
6. Repeat the check for the second terminal.
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.
4.9

Magnetron (G2) 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. Disconnect the magnetron thermostat connections (Figure 012-6, Item 1).
4. Remove the screws securing the magnetron thermostat (Figure 012-6, Item 2).
5. Remove the magnetron thermostat (Figure 012-6, Item 3).
6. Disconnect the cooling fan connections (3 wires and 1 Molex). See Figure 012-6,
Item 4.
7. Remove the screws securing the cooling fan (Figure 012-6, Item 5).
8. Remove the cooling fan (Figure 012-6, Item 6).
9. Remove the four T20 screws securing the air duct (Figure 012-7, Item 1).
10. Push in on the air duct retaining notches (Figure 012-7, Item 2).
11. Lift the air duct upwards to release it.
12. Remove the four 8mm locknuts securing the magnetron (Figure 012-10).
13. Cut the ducting covering the magnetron at the score marks.
14. Pull the magnetron out of the wave distributor housing.
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Technical Information