ABB OmniCore V400XT Product Manual page 418

7 Troubleshooting
7.3.11 Troubleshooting the main computer
Continued
6
7
8
9
10
11
12
13
418
Action
Measure the 24V_TRUNK at con-
nector A2.K1.X1.
Make sure that the cables are con-
nected properly at 24V_TRUNK
(A2.K1.X1).
Measure the 24VDC_TRUNK at
connector A1.X6.
Check the UPS LED on the power
distribution board (DSQC1085).
Check error message on FlexPend-
ant and take appropriate action.
Force start the RobotWare Installa-
tion Utilities mode, see Controller
fails to start on page 361.
Install/re-install RobotWare, if pos-
sible.
The main computer may be faulty,
replace it and verify that the fault
has been fixed.
© Copyright 2022-2023 ABB. All rights reserved.
Note
Verify that the input to A2.K1.X1 is 25.2 VDC
+/- 5%.
• If the measured voltage is normal, pro-
ceed with step 13.
• If the measured voltage is abnormal,
proceed with step 7.
If the connection and cables seem OK, proceed
with step 8.
Verify that the input to A1.X6 is 25.2 VDC +/-
5%.
• If the measured voltage is normal, pro-
ceed with step 9.
• If the measured voltage is abnormal,
troubleshoot the power unit. See
Troubleshooting the power unit on
page 381.
If the UPS LED is:
• Steady green: Proceed with step 11.
• Off: Proceed with step 10.
• If the error message is insufficient, pro-
ceed with step 11.
• If an error was resolved, restart from
step 4.
See Replacing the main computer on page
Product manual - OmniCore V400XT
3HAC081697-001 Revision: A
231.