Omni 4000 Series Installation Manual page 163

Abnormal
Heartbeat light not Blue flashing heartbeat
illuminated steady one beat per second
Solid blue heartbeat
Three quick flashes of
the heartbeat LED, then
a pause
Solid blue heartbeat light Front panel display and key
with no Front panel press all function normally
display
Page 7-4
OMNI 4000/7000 Installation Guide – Rev H
CPU
Normal Possible Causes
Power not applied
LED burned out
CPU malfunctioned
Bootloader and firmware are not
running
Status light indicates that the CPU is in
Boot Loader mode waiting for firmware
to be uploaded
Faulty CPU
Troubleshooting
Suggested Action
•
Check status LED's function.
•
Verify the flow computer is powered
on.
•
Test the front panel:
−
If there is a response, the LED
is burned out. Replace the CPU
card (optional).
−
If there is no response, the CPU
is not working. Replace the
CPU.
•
Check the front panel display.
•
If there is an issue with the loaded
firmware, then the firmware will
need flashed to correct the issue.
•
Check the front panel for the
Bootloader screen.
•
Using OMNICONNECT:
−
Establish a serial connection to
the onboard USB of the CPU
−
Enter Flash Mode
−
Upload the firmware
•
If the flash process fails, replace the
CPU with a spare.
•
Power off, remove all other modules
except the PSU, front panel, and
CPU.
•
Power back up. If problem persists,
replace the CPU with a spare.
•
Try installing the CPU in a spare
flow computer to confirm that the
CPU is faulty