Furuno FR-1500 MARK-3 Series User Manual page 59

General Beep or
Warning may not
beep
CPU None
Corresponding labels turn red
on the SIGNAL MISSING cell.
TRIG: no trigger signal from the
scanner unit.
AZIMUTH: no azimuth signal
(turning signal). See SYSTEM
FAILURE column.
VIDEO: no video signal from
the RF transceiver.
GYRO: no gyrocompass signal
due to disconnected lines(s).
LOG: see LOG FAILURE
column.
LEDs light on the processor
board 03P9230.
-1.45-
Call a service representative.
Note: US Regulation prohibits
unqualified person to open the
covers.