78
TRAK Machine Tools
Southwestern Industries, Inc.
TRAK 3ntr 3D Printers
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Maintenance & Troubleshooting Manual
6.20
Stepper Current Setting (OLD Stepper Drivers)
Set multimeter on Vcc:
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Remove fan blowing on the motherboard to gain fully access to stepper drivers
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Black probe on extreme right PWR screw terminal (-)
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Red probe on driver trimmer (small screw-like metal device on top of stepper drivers)
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Readout on E0/E1/E2 = 0.45 V
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Readout on X / Y = 0.75V
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Readout on Z = 1.15V
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Put back the fan
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Check that all connectors are correctly and safely seated
Figure 6.20.1 Multimeter Probe Placement
