Motorola DS4208 Product Reference Manual page 43

Spray compressed air in the connector area by pointing the tube/nozzle approximately 1/2 inch (1 cm)
e.
away from the surface.
When using compressed air, always wear eye protection; do not point nozzle at yourself or
CAUTION
others; ensure the nozzle or tube is pointing away from your face; read warning label on
compressed air product.
Ensure that there is no lint left by the cotton tipped applicator. Remove lint if found.
f.
If grease and other dirt are found on other areas of the cradle, use a lint free cloth and isopropyl alcohol to
g.
remove.
Allow at least 10 to 30 minutes (depending on ambient temperature and humidity) for the isopropyl alcohol
h.
to air dry before applying power to cradle.
If the temperature is low and humidity is high, longer drying time is required. Warm temperature
NOTE
and dry humidity requires less drying time.
Maintenance, Troubleshooting & Technical Specifications 3 - 3