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ADFM® Flow Meter
Section 3 Maintenance and Troubleshooting
3-6
3.4 Troubleshooting the
ADFM
The following sections provide assistance in locating and iso-
lating faults in the system.
3.4.1 Troubleshooting
Tables
Troubleshooting information for system power-up is provided in
Table 3-1, and for system operation in Table 3-2. Possible
problems and actions are listed in order of likelihood.
Note
Call the factory for assistance before replacing the mother-
board.
Table 3-1 Troubleshooting on Power-Up
Symptom
Possible Problem(s)
Action(s)
No wakeup message on LCD or com-
puter screen
Power
Motherboard
Verify battery voltage and connec-
tions. Verify connection to external
DC supply.
Contact the factory.
No wakeup message on LCD, but com-
puter displays wakeup message when a
manual reset is performed.
LCD
Front panel interface board
Cable connection between LCD and
front panel
Cable connection between front
panel interface board and mother-
board.
Motherboard
Replace LCD
Replace front panel interface board
Replace ADFM Motherboard.
No wakeup message on computer
screen, but LCD displays wakeup mes-
sage and completes Built-In-Tests (BIT).
RS-232 connection
Incorrect port settings on computer
Front panel interface board
Motherboard
Troubleshoot cabling
Adjust communication port settings
on computer
Replace front panel interface board
Replace motherboard.
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