JRC JMR-5410-4X - Page 503

16-17 Section 16 Failures and After-Sale Services
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Symptom Cause Action
The radar antenna does
not rotate even if the
[TX/ST-BY] button is
pressed.
The 24VDC output fuse is blown out.
After removing the cause of the fuse
blowout, replace the fuse.
The fuse is F3.
The motor driver circuit inside of the
radar antenna is not set correctly.
(When NKE-1632, NKE-2632, or
NKE-2632-H is connected as the
radar antenna.)
Set the motor driver circuit correctly.
[Memo]
For setting the motor driver circuit,
always request the work to the
specialized service person. Before
starting the work, turn off the power
supply of the display unit. Otherwise,
an unexpected accident may occur.
The radar antenna rotation unit is
frozen.
De-
freeze the frozen section by using
the neck heater option.
Strong wind of relative wind velocity
exceeding 100kt (about 51.5m/s) is
blowing.
When strong wind of relative wind
velocity exceeding 100kt is blowing,
the radar antenna does not rotate
due to the protection function.
The radar antenna is faulty.
Make a request to the distributor for
repair.
The interface circuit (CMH-2452) is
faulty.
Make a request to the distributor for
repair.
The internal wiring is faulty.
Make a request to the distributor for
repair.
The power supply unit (NDB-945)
inside of the processing unit is faulty.
Make a request to the distributor for
repair.
The processing unit (NDC-1678) is
faulty.
Make a request to the distributor for
repair.
No radar image is
displayed.
The connection with the radar
antenna is abnormal.
Check the connection with the radar
antenna.
The GAIN value is set to the
minimum.
Set a proper value for GAIN.
The SEA/RAIN value is set to the
maximum.
Set a proper value for SEA/RAIN.
The magnetron is deteriorated
significantly.
(Case where an radar antenna that
uses a magnetron is connected)
Replace the magnetron.
[Memo]
For magnetron replacement, always
request the work to the specialized
service person. Before starting the
work, turn off the power supply of the
display unit. Otherwise, an
unexpected accident may occur.
The radar antenna is faulty.
Make a request to the distributor for
repair.
The internal wiring is faulty.
Make a request to the distributor for
repair.
The power supply (NDB-945) inside
of the processing unit is faulty.
Make a request to the distributor for
repair.
The processing unit (NDC-1678) is
faulty.
Make a request to the distributor for
repair.