ESAB Cadd Tig 1500i TA34, Руководство по обслуживанию

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S0740 800 186/E080826/P50
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ct33f3semi
5. PM1, diode D3: measure between the positive of capacitor 15C1 and terminal T2.
The forward voltage drop must be 0.3 to 0.5 V.
6. PM1, diode D1: measure between the positive of capacitor 15C1 and terminal L2.
The forward voltage drop must be 0.3 to 0.5 V.
7. PM1, transistor Q2: measure the resistance between source, the positive of capacitor
15C1, and gate, pin 19 of the module. The resistance must be higher than 500 kohm.
8. PM1, transistor Q3: measure the resistance between source, terminal T2, and gate, pin
14 of the module. The resistance must be higher than 500 kohm.
Circuit diagram and measuring points for the semiconductor module