LEDs
The illustration below shows the LEDs on the main computer:
xx1800000585
Power status LEDA
HDD status LEDB
Status LEDC
SignificanceDescription
The power status LED indicates the status of the power supply and the
main computer hardware and firmware.
Power status, PC
PWR (green)
Normal behavior:
• Off: During a normal startup the LED is off, until the COM Express
module inside the computer unit is started.
• On solid: After completion of startup the LED is steady on.
After start-up phase (30-60 seconds):
• Off: Power input voltage is not in normal range.
Failure during startup (off between blinks). One to four short blinks, one
second off. This is repeated until power off.
• Internal fail of power, FPGA, and/or the COM Express module.
• Replace the computer unit.
Power failure during runtime (fast flashing between blinks). One to five
blinks, 20 fast flashing blinks. This is repeated until power off.
• Temporary voltage drop, cycle the power to the controller.
• Check the power supply voltage to the computer unit.
• Replace the computer unit.
The disk status LED indicates access to the main computer persistent
memory.
Disk status, PC
HDD
Normal behavior:
• No color at power on: R34 FPGA is loaded on the main board.
• Yellow: Access (read/write) to internal mass memory.
Continues on next page
Product manual - OmniCore V250XT 399
3HAC073447-001 Revision: B
© Copyright 2020-2022 ABB. All rights reserved.
7 Troubleshooting
7.3.8 Troubleshooting the main computer
Continued
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