TM840 DMR Mobile Radio
Quick User Guide
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7 Maintenance and Cleaning
In order to derive optimum performance and long service life from this product, please read the
following maintenance and cleaning information carefully for better daily care and clean.
7.1 Maintenance
Please do not puncture or scratch the mobile with hard objects.
Please make sure the mobile located at the good ventilation and good heat dissipation place for
every components working normally.
Please do not put unrelated objects on top of mobile to make sure the efficient heat dissipation.
Please do not soak the mobile in all kinds of etchant, solution or water.
7.2 Cleaning
Please regular do the daily cleaning for the mobile. Wiping away the dust attached to the parts of
mobile by using clean and dry lint free cloth or hairbrush, keep it clean and prevent bad contact.
If the key, control knob, display screen and interface became dirty, using non-woven fabrics dipped
with neutral detergent to clean
them. Don’t use the strong corrosive chemicals like decontaminant,
