Rockwell Automation 1768-L45S Compact GuardLogix Controllers User Manual
Page 122
122
Rockwell Automation Publication 1768-UM002C-EN-P - April 2012
Appendix A
Status Indicators
1.
If there is a 1769 power supply installed in the local bank, remove it and
reapply power.
If the I/O PWR indicator remains red, go to the next step.
2.
Remove power and wait for all status indicators to turn off.
3.
Disconnect the 1769 I/O modules from the system.
4.
Reapply power.
5.
Check the controller I/O PWR indicator.
a. If the indicator is red, replace the controller.
b. If the indicator is green, one of the 1769 I/O modules is causing the red
indicator.
To troubleshoot 1769 I/O modules, see their respective installation
instructions.
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