JRC ECDIS Instruction Manual page 122

Symptom
Rudder angles are not
displayed.
Alternatively, the values
are not displayed
correctly.
Section 20 Failures and After-Sale Services
Cause
The communication is not set
correctly.
The power supply for the rudder
angle indicator is not turned on.
The connection with the rudder angle
indicator is abnormal.
The power supply for the serial-LAN
interface circuit (CMH-2370) is not
turned on.
(Case where the rudder angle
indicator is connected to the
serial-LAN interface circuit or the
rudder angle indicator is connected
to the analog option circuit)
The serial-LAN interface circuit
(CMH-2370) is faulty.
(Case where the rudder angle
indicator is connected to the
serial-LAN interface circuit or the
rudder angle indicator is connected
to the analog option circuit)
The analog option circuit (CMJ-560)
is not set correctly.
(Case where the rudder angle
indicator is connected to the analog
option circuit)
The analog option circuit (CMJ-560)
is faulty.
(Case where the rudder angle
indicator is connected to the analog
option circuit)
The internal wiring is faulty.
The central control unit (NDC-1590)
is faulty.
20-10
Action
Set the communication correctly.
Turn on the power supply for the
rudder angle indicator.
Check the connection with the rudder
angle indicator.
When a rudder angle indicator is
connected to the serial LAN interface
circuit, check if the LED of the
corresponding port is lit at data
reception.
Turn on the power supply for the
serial-LAN interface circuit.
Make a request to the distributor for
repair.
Set the analog option circuit correctly
according to the rudder angle
indicator.
Make a request to the distributor for
repair.
Make a request to the distributor for
repair.
Make a request to the distributor for
repair.