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Symptom
The preheat count down
of the radar antenna is
not displayed.
The radar antenna does
not rotate even if the
[TX/ST-BY] button is
pressed.
Cause
The connection with the radar
antenna is abnormal.
The safety switch of the radar
antenna is set to OFF.
A solid-state radar antenna is
connected.
The radar antenna is faulty.
The internal wiring is faulty.
The processing unit (NDC-1678) is
faulty.
The connection with the radar
antenna is abnormal.
The safety switch of the radar
antenna is set to OFF.
Power is not supplied from the power
supply unit to the radar antenna.
Check the connection with the radar
antenna.
Set the safety switch of the radar
antenna to ON.
[Memo]
For operating the safety switch of the
radar antenna, 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.
Preheat count-down is not displayed
for a solid-state radar antenna.
Make a request to the distributor for
repair.
Make a request to the distributor for
repair.
Make a request to the distributor for
repair.
Check the connection with the radar
antenna.
Set the safety switch of the radar
antenna to ON.
[Memo]
For operating the safety switch of the
radar antenna, 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.
Check the power supply wiring from
the power supply unit (NBD-945)
inside the processing unit to the
interface circuit (CMH-2452).
Check the power supply connection
inside of the radar antenna.
[Memo]
For checking the wiring inside of the
radar antenna, 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.
6-9
Section 6 Failures and After-Sale Services
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