1. Install the SD card into the SD card slot.
2. Select SD CARD SETUP from the MAIN MENU.
Note: The SD CARD SETUP option shows only when an SD card is installed.
3. Select UPGRADE SOFTWARE and confirm. Select the device and upgrade version, if applicable.
4. When the upgrade is complete, the display shows TRANSFER COMPLETE. Remove the SD
card.
5. Restart the instrument for the upgrade to take effect.
Troubleshooting and diagnostics
Troubleshooting
Problem Possible cause Solution
Calibration error The value of the calibration solution in
the calibration menu is different from the
value on the calibration solution bottle.
Change the calibration solution value in the
calibration menu to show the value that is on the
calibration solution bottle.
There is a leak in one of the reagent
delivery valves.
Complete the diagnostic test for reagent delivery
valves. Refer to Diagnostic test for reagent delivery
valves on page 11. If a leak is found, replace the
applicable reagent delivery valve.
The quantity of reagent that is supplied
to the sample cell is incorrect.
Complete the diagnostic test for reagent delivery.
Refer to Diagnostic test for reagent delivery
on page 11. If the reagent delivery is incorrect,
look for a blockage in the tubing or replace the
applicable solenoid valve.
The quantity of calibration solution that
is supplied to the sample cell is
incorrect.
Complete the diagnostic test for calibration solution
delivery. Refer to Diagnostic test for calibration
solution delivery on page 12. If the calibration
solution delivery is incorrect, look for a blockage in
the tubing or replace the applicable solenoid valve.
The stir bar is not installed correctly or
does not move.
Note: The stir bar moves intermittently during
measurements.
Install the stir bar. Make sure that the stir bar moves
during measurements.
The instrument
reading is low or
less than zero.
There is a leak in one of the reagent
delivery valves.
Complete the diagnostic test for reagent delivery
valves. Refer to Diagnostic test for reagent delivery
valves on page 11. If a leak is found, replace the
applicable reagent delivery valve.
The stir bar is not installed correctly or
does not move.
Note: The stir bar moves intermittently during
measurements.
Install the stir bar. Make sure that the stir bar moves
during measurements.
The quantity of reagent that is supplied
to the sample cell is incorrect.
Complete the diagnostic test for reagent delivery.
Refer to Diagnostic test for reagent delivery
on page 11. If the reagent delivery is incorrect,
look for a blockage in the tubing or replace the
applicable solenoid valve.
The reagent blank value in the
REAGENTS/STANDARDS menu is
different from the value on the
R1 (molybdate reagent) bottle.
Change the reagent blank value in the
REAGENTS/STANDARDS menu to show the value
that is on the R1 reagent bottle.
10 English
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