ESAB 100i Service Manual page 43

System Bias PCB Test Points
TP1 GND
TP2 24VDC
TP3 DC INPUT POSITIVE
TP4 Vcc1
TP5 Vcc2
TP6 GATE
TP7 PRIMARY GND
TP8 +12V PRIMARY
TP9 P_ISOL_GND
TP10 DC SENSE POSITIVE
LED Reference
D3 Red MISSING PHASE
D4 Red AC V HIGH
D14 Red AC V LOW
D15 Green VAC_IDA
D26 Green +12V PRIMARY
D27 Green VAC_IDB
D30 Green 24VDC
D44 Green TRANSFORMER ON
Manual 0560956456
iSERIES 100 /200 /300 /400
APPENDIX A-23