Troubleshooting flowchart
No LEDs are lit
Check switch Q0
Check input power
On
Switch on Q0
Off
Check LED status
Lit
Not lit
Abnormal
Normal
Troubleshoot
mains
Check connector X0
Repair connection
Connection
not ok
Check AC input cable
Connection ok
Replace cable
Broken cable
Cable ok
Ok
Ok
Check T2.X1
Abnormal
Replace Q0
Abnormal
Troubleshoot
power unit
Troubleshoot power
supply
Ok
Problem solved
Check Q0 power out
xx2000000444
Continues on next page
Product manual - OmniCore C90XT
359
3HAC073706-001 Revision: D
© Copyright 2020-2021 ABB. All rights reserved.
7 Troubleshooting
7.2.1 No LEDs are lit on the controller
Continued
Содержание OmniCore C90XT
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