powersoft M-Drive, Service Manual

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8
M-Drive | SERVICE MANUAL
INDEX
Checking the Power Supply
Checking the AUX Voltages
18 V 44mA
With a Multimeter set to Ohm, check the varistor by
probing on the points highlighted on (Fig. 6)
There should be no continuity between the two points.
∞Ω
Ω
(Fig. 6)
Ω
(Fig. 7)
Unplug one end of both fuses and check for continuity
on the points highlighted on (Fig. 7) by probing with a
multimeter set to Ohm.
There should be continuity between the two points.
0Ω (Short)
Connect an external DC power supply to the PL1
connector by means of the
PFC2 PFC4 AUX Voltage
Cable , as portrayed on (Fig. 8).
Slowly increase the output voltage and check the
absorption:
18Vdc : 44mA
(Fig. 8)