No Leds Are Lit On The Controller - ABB OmniCore C90XT Product Manual

7 Troubleshooting

7.2.1 No LEDs are lit on the controller

7.2.1 No LEDs are lit on the controller
Description
No LEDs at all are lit in the controller.
Required test equipment
Equipment needed for troubleshooting:
Equipment
Multimeter
Insulating gloves
Preparations
1
2
Recommended working procedure
If no LEDs are lit on the controller during start-up, use this procedure to troubleshoot
what might cause the problem.
Look at the following block diagram to understand how power is connected from
incoming and forward.
Block diagram
AC input
xx2000000443
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358
Action
Make sure that the controller is switched on.
Wait 30 s - 1 min to enable start-up sequence.
Check the FlexPendant for errors and warnings.
DANGER
Troubleshooting on the controller while powered on must be performed by personnel
trained by ABB or by ABB field engineers.
Power inlet Main switch
Q0
X0
X1
PE
© Copyright 2020-2021 ABB. All rights reserved.
Note
exchange
Power unit Power
supply
A1
X1
X6 X1 X2
T2
PS
AC
X9
LED
LED
24V SYS DRV
Product manual - OmniCore C90XT
Robot
Main computer
24V PC
X1
X2
signal
A2
PC
LED
proxy
HMI
24V HMI
K2 24V HMI
connection
X13
X4
HMI
LED
MS
X4
LED
3HAC073706-001 Revision: D
FlexPendant