ABB IRC5 Operating Manual page 32

2 Introduction to troubleshooting
2.1 Overview of troubleshooting
Continued
Read the circuit diagrams
The circuit diagrams contain a lot of information useful, or even essential, to a
trained troubleshooter. See
Check the LEDs on the electronic units
If a fault is thought to be caused by an electronic unit (circuit board in the controller
or other), the LEDs on the unit front may give leads.
32
Circuit diagrams on page
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583.
Operating manual - Troubleshooting IRC5
3HAC020738-001 Revision: AA