User's Manual

6
Maintenance
Clean the following parts on the BL-N90/N90K and the communication unit periodically.
• BL-N90/N90K
Clean the laser emitter/receiver and the charging terminals.
• Communication unit
Clean the charging terminals.
b Cleaning method
Laser emitter/receiver : Clean the surface using an eyeglass cleaning cloth or a soft cloth
that has been dampened with a specialty cleaner for plastics.
Charging terminals : Wipe the surface gently using a soft cloth moistened with
alcohol.
Charging
terminals
Laser emitter/
receiver
Charging
terminals