ABB Robotics OmniCore C90XT - 7.3 Troubleshooting units

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 386Drive unit
Troubleshooting the power unit on page 388Power unit
Troubleshooting fieldbuses and I/O on page 393Scalable I/O
Troubleshooting the connected services gateway on
page 394
ABB Ability™ Connected Ser-
vices
Troubleshooting the Ethernet switch on page 400Ethernet switch
Troubleshooting the axis computer on page 402Axis computer
Troubleshooting the main computer on page 404Main computer
Troubleshooting the power supply on page 407Power supply
Troubleshooting the fieldbus adapter slave on page 412Fieldbus adapter slave
Troubleshooting the robot signal exchange proxy on
page 414
Robot signal exchange proxy
384 Product manual - OmniCore C90XT
3HAC073706-001 Revision: E
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7 Troubleshooting
7.3.1 Troubleshooting LEDs in the controller