ADS Environmental Services Model 4000 530017 A0 - Manual (Page 99)

Maintenance and Troubleshooting 5-13
Problem Data is missing at the beginning or end of the date range
following data collection.
Possible
Causes
Monitor activation may have failed.
Monitor time may be incorrect.
Monitor’s basic code or variable file may be corrupt.
Possible
Solutions
Verify whether the monitor has been activated, and
activate if necessary.
Check monitor time, and reset clock if necessary.
Run diagnostics in FieldScan to verify whether a basic
code problem may exist.
Contact your regional ADS representative.
Problem An I/O error message displays when communicating
with the monitor.
Possible
Cause
Processor board, depth board, or velocity board may be
faulty.
Possible
Solutions
Re-attempt communication with the monitor.
Contact your regional ADS representative.
Ultrasonic Depth Subsystem
The following tables contain general troubleshooting techniques for
problems with the ultrasonic depth subsystem.
Note: Contact a trained ADS technician for further
diagnosis prior to replacing a sensor.