Igbt Module V1 - Kemppi Kempact 253R Service Manual

8.1.2. IGBT module V1

IGBT module can be tested by multimeter if using the diode tester function. Module holds six diodes and in many
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cases they may be defective if IGBT is damaged
When measuring IGBT unit diodes you must disconnect other end of main transformer (X7)
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After measuring connect other end (X7) back
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Measurings:
1) Positive test pole (1, red) to connector X16, negative test pole (1, black) to connectors X7, X8 and X14 one at time
Result: 0,3...0,6 diodes Ok
2) Negative test pole (2, black) to connector X13, positive test pole (2, red) to connectors and X7, X8 and X14 one at time
Result: 0,3...0,6 diodes Ok
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