ABB OmniCore C30 Product Manual page 504

6 Troubleshooting
6.2.1 No LEDs are lit on the controller
Continued
Troubleshooting flowchart
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504
No LEDs are lit
Check switch Q0
On
Check Q0 lamp
Lit
Check input power
Normal
Check connector X0
Connection ok
Check AC input cable
Cable ok
Check Q0 power out
CRB15000 controller
No
Check T2.X1
Ok
Troubleshoot
power supply
Not lit
Check LED status
Lit
Problem solved
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Off
Switch on Q0
Not lit
Troubleshoot
the cable
Abnormal
Troubleshoot
mains
Connection
not ok
Repair connection
Broken cable
Replace cable
Abnormal
Replace Q0
Yes
Abnormal
Troubleshoot
power unit
Product manual - OmniCore C30
3HAC060860-001 Revision: P