Omni 4000 Series Installation Manual page 162

Abnormal
The display is showing
No display
system data and menus
No key press beeps Keypress functions for screen
navigation includes a beep
with each key press
Abnormal
Battery voltage LED Battery voltage indicator
indicator illuminated red illuminated green
Page 7-3
OMNI 4000/7000 Installation Guide – Rev H
Front Panel
Normal Possible Causes
Power source malfunction
An overcurrent condition overloaded a
fuse, tripping it
A front panel ribbon cable malfunction
Front panel is faulty
CPU
Normal Possible Causes
Power not applied
LED burned out
Coin cell battery needs replace
Troubleshooting
Suggested Action
•
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
•
Replace the front panel with a spare
to test.
Suggested Action
•
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