ESAB Origo Mig L3000i Service Manual page 92

8 SERVICE INSTRUCTIONS
11. Primary side of the main transformers
• Measure with the probe connected to DR1 and DR2 respectively.
• The shape of the pulses must be as in the graph below.
12. Secondary side of the main transformers
• Measure with the probe connected to T11 and T22 respectively.
• The shape of the pulses must be as in the graph below.
13. Measure the output voltage from the welding current terminals, XS1 and XS2. It must be
about 2.9 to 3.1 V.
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