Klark Teknik DN9652 User Manual

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This appendix contains routine service and maintenance instructions.

You can reset the DN965X unit to its factory default settings 
by pressing the RESET button on the rear panel of the unit 
(see Figure 1, “Rear panel of the DN965X,” on page 15).  
The LCD screen will display the message shown right to 
inform that the settings are being reset.  The unit will then 
reboot with the factory defaults.

To help keep your DN9650/DN9652 Network Bridge unit in good working order and to 
make sure it gives you optimum performance, we recommend that you carry out the 
following at monthly intervals:

• Clean the unit (see “Cleaning”  below).

• Check the controls for freedom of operation.

• Check the functionality of all controls, that is, control knobs, pushbuttons and LEDs.  

You can carry out a visual check of all illuminated items (LEDs etc.) by switching the 
unit off and then on again, as they should all illuminate during power up.

• Check the functionality of the equipment.

Switch off the unit and electrically isolate it from the mains before cleaning.

Clean the DN9650/DN9652 Network Bridge using a dry, lint-free cloth.  Do not use 
harsh abrasives or solvents.  When cleaning the unit, take great care not to damage 
control knobs, pushbuttons etc.

To clean the LCD screen, wipe it carefully with a soft, lint-free cloth using ethanolic 
liquid, such as a screen cleaner for LCDs, or by using a screen wipe specially designed 
for the purpose.  When cleaning the LCD screen, please take the following precautions:

• Don’t use harsh abrasives, such as paper towels.

• Don’t apply liquids directly to the screen.

• Don’t use ammonia-based cleaners and solvents, such as acetone.