Omni 4000 Series - Page 162

OMNI 4000/7000 Installation Guide – Rev H
Page 7-3
Troubleshooting
Front Panel
Abnormal
Normal
Possible Causes
Suggested Action
No display
The display is showing
system data and menus
Power source malfunction
An overcurrent condition overloaded a
fuse, tripping it
A front panel ribbon cable malfunction
• Check the heartbeat.
• Check that the front panel keys
beep when pressed.
• Check the system power.
• Use OMNIPANEL to verify the flow
computer is functioning properly.
• If there is normal front panel
functionality through OMNIPANEL,
check the front panel ribbon cable:
− Inspect for damage to cable and
no bent pins.
− Verify the cable is installed with
the correct orientation
No key press beeps
Keypress functions for screen
navigation includes a beep
with each key press
Front panel is faulty
• Replace the front panel with a spare
to test.
CPU
Abnormal
Normal
Possible Causes
Suggested Action
Battery voltage LED
indicator illuminated red
Battery voltage indicator
illuminated green
Power not applied
LED burned out
Coin cell battery needs replace
• Verify that 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).
• Replace the cell battery