CA34/44/54 Troubleshooting, Service and Specifications
Chapter 10-1
10.1 Troubleshooting
For all fault finding, first check that the supply voltage is between 10-32 VDC
Symptom
Check
Remedy
No picture on display
screen
Check that the unit is
turned on
Press the [PWR] key on
keypad
Check fuse in power cable
fuse holder
Replace fuse. Use only type
T6.3A slow (5x20 mm)
Picture appears on the
display screen, but image
is too dark or too bright
Press [PWR], adjust light
and press [ENT]
No normal picture or key
operation
Turn unit off and on again
Disconnect power and
connect power again
Check via [MENU], [7],
[CHART] if C-MAP chart
is defective
Remove C-MAP chart if
defective
Return to factory presets,
see section 9.8
No GPS position update
Check that position
mode is INTERNAL,
refer to interface setup in
[MENU],[7],[2], Position
Check antenna and cable
Replace antenna or cable
Screen update is
extremely slow
Check that the stored
Tracks and Routes (not
currently in use) are not
all drawn up on the chart
Turn off ‘Course line’
for each stored route in
sec.8.2, and turn off ‘Dis-
play track’ in sec.8.6
Echo picture appears
normal, but no target are
shown or only random
“noise” is seen
Check that the correct
transducer frequency is
selected
Change frequency from
Echo quick menu, press
[ENT], [1] - see section
5.5.
Check that the transducer
connectors are securely
mated with the unit
Correctly mate the con-
nectors to the unit
Check that the receiver
gain is set high enough
Increase the receiver gain
in 5.7 Presentation setup
Check that the range is
correct for the water depth
Adjust the range in 5.7
Presentation setup
Summary of Contents for CA34
Page 26: ...Chapter 2 10 CA34 44 54 Fundamentals initial start up...
Page 56: ...Chapter 3 30 CA34 44 54 Radar menu...
Page 80: ...Chapter 4 24 CA34 44 54 Chart menu and INFO windows...
Page 112: ...Chapter 6 20 CA34 44 54 Pilot menu navigation examples...
Page 188: ...Chapter 10 10 CA34 44 54 Troubleshooting Service and Specifications...