7.3 Troubleshooting units
7.3.1 Troubleshooting LEDs in the controller
Description
The controller features a number of indication LEDs, which provide important
information for troubleshooting purposes. If no LEDs light up at all when switching
the system on, troubleshoot as detailed in this section.
All LEDs on the respective units, and their significance, are described in the
following sections.
Units with LEDs in the controller
Troubleshooting the drive unit on page 370Drive unit
Troubleshooting the additional drive unit on page 376Additional drive unit
Troubleshooting the power unit on page 383Power unit
Troubleshooting fieldbuses and I/O on page 396Scalable I/O
Troubleshooting the 3G Connected Services gateway
on page 397
3G Connected Services gateway
Troubleshooting the 4G Connected Services gateway
on page 403
4G Connected Services gateway
Troubleshooting the Ethernet switch (DSQC1035) on
page 414
Ethernet switch
Troubleshooting the main computer on page 416Main computer
Troubleshooting the power supply, ODVA on page 422
and Troubleshooting the process power supply on
page 421
Power supply
368 Product manual - OmniCore V250XT Type B
3HAC087112-001 Revision: A
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7 Troubleshooting
7.3.1 Troubleshooting LEDs in the controller
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