17-2 System Maintenance
WARNING:
Before cleaning the machine, turn off the power supply of the machine and remove the
power cable. Cleaning the machine in power-on state may result in electric shock.
Clean the dust-proof net of the main unit
Tool: soft brush
Method:
1. Before cleaning, remove the dust-proof net. Remove the front cover assembly and the dust-
proof net as shown below.
a) Lift the front cover outward from the groove (for the machine with the central brake
structure, step on to lock the central brake, and then lift the cover outward).
b) Locate the dust-proof net handle on the upper part of the cover and pull out the dust-proof
net.
2. Clean the dust-proof net: Gently brush off the dust from dust-proof net with a soft brush.
3. Install the dust-proof net: Install the dust-proof net by performing operations in reserve order of
the dust-proof net removal procedure, and reinstall the front cover assembly back to the cover.
CAUTION:
Clean all the dust-proof net
s of the machine
regularly (once a month), otherwise it is easy to
cause damage to the machine. When the
machine is used
outdoors or in other dusty
places, increase the cleaning frequency.
Cleaning the display (touch screen)
Tools: dry soft cloth, water or mild soapsuds
Method: Directly use a dry soft cloth to clean the surface of the display and touch screen. If
there is still a stain, dip a dry soft cloth with a little water or mild soapsuds to wipe and then air
dry the display.
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 is needed to ensure
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