19 System Maintenance
Operator’s Manual 19 - 3
Cleaning the control panel
Clean the control panel and keyboard periodically (1 time per month); otherwise the dirt in the gaps
between keys will jam the keys, causing long beeping of the buzzer and malfunction of keys.
Tools: mild soapsuds, and dry soft cloth
Use a dry soft cloth to wipe the dust from the surface of the control panel (including keys and
encoder). Or, dip a soft cloth with a small amount of mild soapsuds to scrub away stubborn stains,
and then use another soft cloth to dry or air dry the control panel. If it is difficult to clean the control
panel, remove the encoder cap and clean the control panel with mild soapsuds.
Cleaning the trackball
The trackball is a human-computer interaction component. It is easy for the trackball to bring dust
from the outside into the module during use. Therefore, regular maintenance (1 time per month) is
needed to ensure the system performance. When the cursor control is not flexible, it may be caused
by dust pollution inside the trackball. In this case, remove the trackball and clean the dust inside.
Tools: paper, dry cloth, mild soapy water
Perform the following procedure:
1. Disassembling:
With two fingers, grab the convex strip on the trackball pressure ring and turn it clockwise for
about 45 degrees. When the pressure ring rises with the rotation, take out the pressure ring and
the ball (be careful that dropping the ball may cause damage to the ball).
2. Cleaning:
1 Keyboard cover 2 Trackball
3 Trackball pressure ring
1 Bearing 2 Main shaft
3Main shaft
123
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