4 Troubleshooting by unit
4.1 Troubleshooting LEDs in the controller
General
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 section
All LEDs are off at controller on
All LEDs on the respective units, and their significance, are described in the
following sections.
All units with LEDs are shown in the illustration below:
Units with LEDs in the controller
J
H
D
E
F
A
G
B
C
xx1300000858
Troubleshooting the customer I/O power supply
on page 88
Customer I/O power supply
A
Troubleshooting the computer unit on page 68
Computer unit
B
LED board
C
Troubleshooting the power distribution board on
page 81
Power distribution board
D
Troubleshooting the system power supply on
page 76
System power supply
E
Troubleshooting the contactor interface board on
page 86
Contactor interface board
F
Troubleshooting the drive system on page 72
Drive system
G
Troubleshooting the panel board on page 70
Panel board
H
Troubleshooting the axis computer on page 74
Axis computer
J
Continues on next page
Operating manual - Troubleshooting IRC5
63
3HAC020738-001 Revision: AA
© Copyright 2005-2018 ABB. All rights reserved.
4 Troubleshooting by unit
4.1 Troubleshooting LEDs in the controller
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