JRC JFS-280, Instruction Manual

Page: 283 / 328

8-3 8 Maintenance and inspections
8
8.1 General Maintenance
You must do the following maintenance to operate the sonar in good condition. Because doing
maintenance often decreases breakdowns, we recommend doing routine maintenance
regularly.
The following points are general maintenance common to all equipment.
Clean the equipment.
Clean off as much dust, dirt, seawater, etc., stuck to the housing as possible. When cleaning,
use a dry cloth. Especially clean the vents well with a brush so that they maintain good airflow.
If dust gets stuck to the display screen, its transparency will worsen and images will be dark.
When cleaning, wipe with a soft cloth (flannel or cotton). Do not wipe it hard with a dry cloth or
use gasoline or thinners.
Absolutely do not inspect or repair the internal parts by
yourself.
Inspections and repairs done by people other than
specialized mechanics may cause fires or electric shocks.
Ask our sales department or a representative, branch
office, branch store, or business office near you for
inspections and repairs of the internal parts.
Be sure to turn off the main power supply when doing
maintenance.
If you do not turn off the power, it may cause electric
shocks.
When cleaning the display screen, do not wipe it hard
with a dry cloth or use gasoline or thinners.
Doing so may damage the surface.
Warning