DeLonghi MW 605 User Manual download pdf (Page 9)

COMPONENTS TEST PROCEDURECOMPONENTS TEST PROCEDURE

COMPONENTS TEST PROCEDURE

MAGNETRONMAGNETRON

MAGNETRON 1. Chek resistance: Normal reading:

Across the filament terminals Less than 1 Ohm

of the magnetron with an Ohm-

meter on R x 1 scale.

2. Chek resistance: Normal reading:

between each filamet terminals infinite Ohm

of the magnetron and the chassis

ground with an ohm-meter set on

highest scale

HIGH VOLTAGEHIGH VOLTAGE

HIGH VOLTAGE

1. Measurement the resistance:1. Measurement the resistance:

1. Measurement the resistance:

Normal reading:Normal reading:

Normal reading:

TRANSFORMERTRANSFORMER

TRANSFORMER with ohm-meter on R x 1 scale.

a) Primary winding: - appoximately 1.24 Ohm

b) Filament winding: - less than 1 Ohm

c) Secondary winding: - appoximately 87 Ohm

2. Measure the resistance: Normal reading

with an ohm-meter on highest scale

a) primary winding to ground - infinitive Ohm

b) Filament winding to ground - infinitive Ohm

HIGH-VOLTAGEHIGH-VOLTAGE

HIGH-VOLTAGE 1.Measure the resistance: Normal reading:

CAPACITORCAPACITOR

CAPACITOR Across the terminals of the Momentarily indicates several

capacitor with an ohm-meter on

Ohm, and then gradually returns highest scale. to infinite

Ohm.

Lamp 2.5V

1. Check diode:

Across the terminals with a 9V

battery and 2.5V lamp circuit.

- +

Normal reading:

Lamp is ON or OFF depending

on polarity of voltage.

Abnormal reading:

Lamp is too bright : short circuit

Lamp is never ON : open circuit

External housing

Terminals

CAUTION: discharge high voltage capacitor before cheking parts of high voltage circuit.CAUTION: discharge high voltage capacitor before cheking parts of high voltage circuit.

CAUTION: discharge high voltage capacitor before cheking parts of high voltage circuit.

DIODEDIODE

DIODE

Abnormal reading:

indicates continuity or infinite

Ohm from the beginning.

SCHEDA TECNICA 96095/1

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DeLonghi MW 605 User Manual Page 9

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