Chapter 8 RA83/84/85/93/94/95 Series
Trouble Shooting And On Board Servicing Operation Manual
Location of the status indicators
8.3 T
required to fix or diagnose the faulty part in
A83/84/85/93/94/95 radar systems.
.3.1 First-line fau
se the following tables that show brief diagnosis schedule to assist first-line servicing
n board the ship.
able 8.3 Primary
escription of fault Possible cause of failure Corrective measures
Figure 8.1 Location of status indicators
rouble shooting
This section provides information
R
8 ltfinding
U
o
T faults
D
Radar does not turn on 1. Power cable is disconnected.
2. Power supply e is outside of
the specified value.
3. Main fuse is blown.
1. Connect the power cable and
secure the cable plug
connection.
2. Use properly rated power
supply.
3. Replace the fuse with new
one.
voltag
Radar turns on but
othing displayed on th
reen
1. Brilliance control i
position.
defective.
D driving circuits are defective.
1. Turn the brilliance control CW
to set proper brilliance.
2. Call for service.
3. Call for service.
n e
minimum
2. LCD is
sc
s set at
3. LC
Table 8.4 Possible fa
Description of faults Possible cause of failures Corrective measures
ults
U18
U25
U21
U37
DS2
DS1
D
Status indicators
U57
LOGIC BOAR
Line Filter
Battery
E47-700B
8-2 93142105-02
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