User Manual

84
7.2 Inspecting Each Part
When you have finished self-check, inspect each part of the radar according to Tab.7-1.
Tab. 7-1 Troubleshooting
Symptom Cause Corrective action
(1) Radar cannot be powered on. Power cable is disconnected. Connect power cable correctly.
Power supply voltage is outside
of specified value
Use Specified power supply.
(See Section 3.2)
Fuse in power cable is blown. Replace fuse. (See Chapter 6)
(2) Nothing is displayed al-
though radar is powered on.
Brightness is improperly ad-
justed.
Use BRIL key to adjust. (See
Section 5.3.)
LCD is faulty. Contact your dealer.
(3) Screen is dark. Brightness is improperly ad-
justed.
Use BRIL key to adjust. (See
Section 5.3.
Backlight is faulty. Contact your dealer.
(4) Video does not appear al-
though characters are displayed.
Interconnecting cable is out of
place.
Connect interconnecting cable
correctly.
(5) Echo image on screen differs
from actual image.
Ship’s heading is incorrectly set. Set ship’s heading correctly.
(See Section 5.5.4.5.4)
Timing adjustment is incorrectly
set.
Set timing adjustment correctly.
(See Section 5.5.4.5.4)
(6) Echo images are blurred. GAIN, STC, or FTC is improp-
erly set.
Adjust. (See Section 5.3.6 to
5.3.8.)
Magnetron has degraded. Contact your dealer.
(7) Too much noise. Radar is not tuned correctly Adjust TUNE. (See Section
5.5.3.4)
Radar set is not grounded to
earth.
Connect grounding wire. (See
Section 3.4 to 3.6.)
(8) No response to key pressing. Panel keys are not in contact. Contact your dealer.
Power supply circuit is faulty. Contact your dealer.