Furuno COLOR VIDEO PLOTTER 1933C - Manual (Page 215)

7-1
7. MAINTENANCE,
TROUBLESHOOTING
This chapter provides information necessary for keeping your unit in good
working order and remedying simple problems.
WARNING
Do not open the equipment.
Hazardous voltage which can
cause electrical shock exists
inside the equipment. Only
qualified personnel should
work inside the equipment.
7.1 Preventive Maintenance
Regular maintenance is important for optimum performance. A maintenance
program should be established and should at least include the items shown in
the table below.
Maintenance program
Item Check point Remedy
Display unit
connectors Check for tight connection. Tighten loosened
connectors.
LCD The LCD will, in time, accumulate
a coating of dust which tends to
dim the picture. Wipe LCD lightly
with soft cloth to remove dust. Do not use chemical
cleaners to clean any part of
the display unit; they can
remove paint and markings.
Ground terminal Check for tight connection and
corrosion. Clean or replace ground
wire as necessary.
7.2 Replacement of Battery
A lithium battery (Type CR2450-F2 ST2, Code No. 000-133-495) fitted on a
circuit board inside the display unit preserves data when the equipment is turned
off, and its life is about three years. When its voltage is low the battery icon ( )
appears at the top of the display. When the icon appears, contact your dealer to
request replacement of the battery.