Detailed working procedure
NoteAction
xx2000000445
Make sure that the power inlet 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.
• Make sure that the circuit breaker (if used)
is closed.
2
If the incoming power is not ok, the
problem is not in the robot control-
ler. Troubleshoot the incoming
power.
Check that the connector (X0) is properly connec-
ted.
Tip
For more details, see Circuit diagram - OmniCore
C90XT.
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, see Replacing
the power inlet on page 302.
If abnormal, see Troubleshooting
the power unit on page 382.
Check connector T2.X1.6
Troubleshooting the power supply
on page 401.
Troubleshoot the power supply unit.7
360 Product manual - OmniCore C90XT
3HAC073706-001 Revision: D
© Copyright 2020-2021 ABB. All rights reserved.
7 Troubleshooting
7.2.1 No LEDs are lit on the controller
Continued
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