Detailed working procedure
NoteAction
Make sure that the mains switch (Q0) has been
switched on.
1
Use a multimeter and insulating
gloves.
Make sure that the system is supplied with power.
• Measure incoming mains voltage and make
sure the voltage is within the normal range.
2
If incoming mains is not ok, the
problem is not in the robot control-
ler. Troubleshoot incoming mains.
Check that the mains connection (X0) is properly
connected.
Tip
For more details, see Circuit diagram - OmniCore
V250XT, rev 04 or later.
3
Check that the AC input cable is properly connec-
ted.
4
Use a multimeter and insulating
gloves.
Check the output voltage of (Q0).
• Make sure that (Q0) is closed.
5
Replace if damaged.Check the fuse (F1).6
• If abnormal, troubleshoot
the power unit. See
Troubleshooting the power
unit on page 383.
Check connector A1.X1.7
• If abnormal, troubleshoot
the LEDs. See
Troubleshooting LEDs in the
controller on page 368.
Check the LED status.8
350 Product manual - OmniCore V250XT Type B
3HAC087112-001 Revision: A
© Copyright 2023-2023 ABB. All rights reserved.
7 Troubleshooting
7.2.1 No LEDs are lit on the controller
Continued
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