82
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 off
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 or contrast are im-
properly adjustment.
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 is not grounded to earth.
Connect grounding wire. (See
Section 3.4 to 3.6.)
(8) Not responded when key is
pressed.
Panel keys are not contacting.
Contact your dealer.
Power supply circuit is faulty.
Contact your dealer.
Summary of Contents for RA40C
Page 24: ...14 Horizontal line Line of sight θ Fig 3 2 Obtaining sufficient dip angle ...
Page 48: ...38 The function can be changed at the KEY ASSIGNMENT function in the CUSTOM menu of the SETUP ...
Page 69: ...73 ...
Page 80: ...63 a PPI Screen All functions can be used on this screen D V T D Q T g t PPIScr een ...
Page 93: ...52 ...