Part I Service Scenarios
Maintenance 46
CAUTION:
Clean all dust filters of the system periodically (once a month); otherwise, the
system may be damaged. Cleaning times can be increased when the system is used
in the open air or somewhere dust is more.
2.1.3.2 Clean the Display (Touch Screen)
Tool: dry soft cloth, clear water or wild soapsuds
Method: Clean the display and touch screen surface with a soft dry cloth. The display and touch screen
with remaining stains can be wiped away using a cloth with a little clear water or wild soapsuds and
then left for air drying.
2.1.3.3 Cleaning the Trackball
The trackball is a man-machine interaction component and may easily carry dust into the module.
Therefore, it must be regularly maintained to ensure system performance. When the cursor does not
function flexibly, it may be because the trackball is contaminated by dust in the interior. In this case,
disassemble the trackball and clean the dust inside it.
Tool: tissue, dry soft cloth, wild soapsuds
Method:
1. Disassembling the trackball:
Turn the trackball washer about 35°counterclockwise until it lifts, remove the washer and pull out
the trackball. Exercise caution during operation to avoid dropping the trackball and thereby
damaging it. If you cannot hold the trackball firmly when pulling it out, use adhesive plaster. The
following figure shows the disassembly flow.
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