Hach Polymetron 9500 Manuel D'utilisation Simplifié page 28

Problem
SD card full
Controller cannot find software updates
on the SD card.
Display is lit but shows no characters or
characters are faint or blurry.
Controller will not power up, or powers
up intermittently
Network or sensor module not
recognized
Sensor not recognized
Device Missing error message appears
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Resolution
Read the SD card with a PC or other card reader device.
Save important files and then delete some or all of the
files on the SD card.
Make sure an appropriate folder is created by installing
the SD card in the controller. An update folder will
automatically be created.
Install the SD card on a PC and make sure the software
files are located in the appropriate update folder.
If the same SD card is used with multiple controllers,
each controller will have a separate folder on the
system. Make sure the software updates are in the
folder dedicated to the controller in use.
Adjust the display contrast
Make sure protective film has been removed from
display.
Clean the outside of the controller, including the display
screen.
Make sure the AC power connections are properly
terminated in the controller.
Make sure the power strip, line power, wall plug are all
properly plugged in.
Contact Technical Support
Make sure the module is properly installed.
Make sure the module selector switch is set to the
proper number.
Remove sensor module and install the module into the
second analog slot. Apply power to the controller and
allow the controller to perform a device scan.
Contact Technical Support.
If the sensor and a corresponding module is installed in
the controller, refer to the instructions supplied with the
Network or Sensor Module.
Contact Technical Support
Perform a Device Scan from the Test/Maintenance
menu.
Power cycle the controller