Onwa Marine Electronics KR-12X8 - Manual (Page 49)

If... But... Then...
you pressed the
[POWER] key to
turn on the radar
the radar has warmed
up and you pressed
the [ST-BY/TX] key to
transmit
you have adjusted
the gain with A/C
RAIN and A/C SEA
off
a key is pressed nothing happens
neither noise nor targets
appear (indications and
markers do)
neither indications nor
markers appear (noise
and targets do)
the sweep (radial line
sweeping around the,display)
is not synchronized with
antenna rotation
there is no change in
sensitivity
the antenna does not
rotate
Characters and indications
are abnormal
the control panel does
not light
nothing appears on the
display or display contrast
is poor
characters are distorted
try adjusting the control panel
backlighting on the Function menu.
battery may have discharged.
check fuse.
try adjusting the brilliance.
request service.
the problem may be in antenna
Unit request service.
have a qualified technician check
the set.
check signal cable for damage.
have a qualified technician check
the set.
the pr oblem m ay be in th e an tenna
unit. Request service.
request service.
key may be faulty. Request service.
Table 5-2 Troubleshooting table
42