ABB OmniCore C90XT - Page 362

Troubleshooting flowchart
Start-up failure
Check LED PS
Green
Red or flashing
Not lit
Not lit
Check LED AC
Green
Check LEDs:
MS, PC, HMI
Green
Problem solved
Check LEDs:
PC PWR, PC HDD,
PC STAT
L
it
Troubleshoot power
supply T2
Troubleshoot power
unit A1
Not lit
Troubleshoot robot
signal exchange
proxy K2
Troubleshoot main
c
omputer
xx1800001829
Detailed working procedure
NoteAction
LED PS should be green.
• If not, see Troubleshooting
the power supply on
page 401.
• If the power supply is ok,
see Troubleshooting the
power unit on page 382.
• If the power unit is ok, check
that the power inlet is prop-
erly connected and the
power inlet switch is turned
on.
For more details about the LEDs,
see Troubleshooting the robot sig-
nal exchange proxy on page 407.
Look at the LED PS.1
LED MS should be green.
• If not, see Troubleshooting
the robot signal exchange
proxy on page 407.
Look at the LED MS.2
Continues on next page
362 Product manual - OmniCore C90XT
3HAC073706-001 Revision: D
© Copyright 2020-2021 ABB. All rights reserved.
7 Troubleshooting
7.2.2 Start-up failure
Continued