NAVI D-25 Instruction Manual page 183

6 Maintenance and Troubleshooting
6.5 Troubleshooting
● Measurements are not repeatable
● When the printer will not print even though it is
connected
172
Cause
Some effects of
the sample
solution
The responsive
membrane is
dry or dirty.
There is not
enough
reference
solution or it is
dirty.
The responsive
membrane is
cracked or worn
out.
Check the following points:
・ Is the printer turned ON?
・ Has a printer error occurred?
・ Is there printing paper? Has the paper jammed?
・ When running a test print according to the manual,
does it print out correctly?
How to solve problem
The pH or other properties of the
sample solution may have changed
over time, making repeatability
poor.
Wash the responsive membrane.
Replace the reference solution with
new solution.
Replace the electrode.
HORIBA