Chapter 7
CVS-833/833C
Trouble Shooting
Faults detected
Possible cause of the failure
Remedial action against negative
result
No depth indication but
―
―
―
―
shown.
1. Is the bottom echo displayed
within the display?
2. If YES, then, is the bottom painted
in red?
1.
Select an appropriate depth
range in which the bottom is
displayed.
2. Adjust the GAIN control to obtain
the red sea bottom.
If the above actions are not
the answer, call for service.
No water temperature
display shown.
1. Is the water temperature unit (
o
C
or
o
F) selected? If NO, go to Initial
Menu to select “5 NAV DISPLAY
SETTING” and select the unit.
2. Is the temperature/speed sensor
type T-80/90/100 connected to the
receptacle J4 (TEMP) located at
the rear panel?
1. Select a desired temperature
unit.
2. Connect an appropriate sensor
type to CVS-833/833C.
No present position is
shown
1. Is the L/L or LOP coordinate
selected in the Initial Menu “5 NAV
DISPLAY SETTING”?
2. Is the necessary NMEA-0183 Nav
data (GGA, GLL, GNS) supplied
via the receptacle J2 (SER DATA)
at the rear panel?
1. Select a necessary coordinate
in the Initial Menu “5 NAV
DISPLAY SETTING”.
2. Connect a Navigator unit to
CVS-833/833C and select “7
OTHER SETTING 1” to select a
desired format.
No ship’s speed data
shown
1. Is the speed unit (kpmh, mph, kt)
selected in the Initial Menu “5 NAV
DISPLAY SETTING”?
2. Is the necessary NMEA-0183 Nav
data (VTG) supplied via the
receptacle J2 (SER DATA) at the
rear panel?
1. Select a desired speed unit in
the menu.
2. Connect a Navigator unit to
CVS-833/833C and select “7
OTHER SETTING 1” to select a
suitable format that contains
the VTG sentence.
No own ship’s bearing
display shown
1. Is the “Bearing ON” selected in the
Initial Menu “5 NAV DISPLAY
SETTING”?
2. Is the necessary NMEA-0183 Nav
Data (VTG) supplied via the
receptacle J2 (SER DATA) at the
rear panel?
1. Select “Bearing ON” in the
menu.
2. Connect a Navigator unit that
supplies NMEA 0183 format
with VTG sentence to J2.
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