Chapter 4 Maintenance and Troubleshooting
4.4 Troubleshooting
104
HORIBA
●
ERROR No.0007 Buffer uncertain
Definition
The standard solution can not be identified
automatically. After performing the countermeasures
below, perform calibration again from the beginning.
●
ERROR No.0008 Please calibrate
Definition
The actual calibration interval exceeds the calibration
cycle setting.
Cause
Countermeasure
There is a problem
with the standard
solution.
Prepare new standard solution.
There is a problem
with the standard
solution setting.
Match the regulation type (NIST, USA) of
standard solutions between the settings
and the actuals.
The responsive
membrane is dry or
dirty.
Measure after cleaning the responsive
membrane and soaking it in pure water for
24 hours.
Reference internal
solution is poor or
dirty.
Replace the internal solution with new
solution.
The responsive
membrane is dam-
aged or worn out.
Replace the electrode.
Cause
Countermeasure
It exceeds setting
days of the
calibration cycle.
Perform calibration.
Summary of Contents for F-74BW
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