Power Supplies; Symptoms Of A Failed Power Supply - Baby Lock Regalia BLRG20 Service Manual

Section 17: Electronic Information - System Power
(Continued)
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Power Supply
The Regalia machine uses a 500 watt 48VDC output
power supply, mounted inside the machine on the
drive train assembly. The power supply has two
48VDC outputs, one for the control board and one
for the motor driver board. These two boards are
also mounted to the drive train assembly .
At the top of the power supply there is a connection
for the remote power switch located at the front left
of the machine (see top right - small white connector
with black and red wires). The other end of this
remote power switch is on the bottom left on the
control board at J5 (circled in white).
If the power supply has failed, there will be no power
at all to the machine (no handlebar screens, no
lights, etc.). However, it is more likely that the fuse
has blown, if there is no power to the machine than
that the power supply has failed. Refer to page 41 for
fuse information.

Symptoms of a Failed Power Supply

If the power supply totally fails there will be no power
to any system in the machine .
If the power supply fails to provide 48VDC then the
machine will not run because it requires 48VDC to
operate .
 NOTE: It is also possible that power that is
converted by the control board to 5V and
3.3V for other systems in the machine could
fail, rendering those systems inoperative. In
this case the control board would need to be
replaced .
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