6. MAINTENANCE, TROUBLESHOOTING
6-7
6.7 Diagnostics
A diagnostic test program is provided to test major circuit boards in the control unit,
processor unit and card I/F unit. Note that the normal radar picture is lost during this
test.
Proceed as follows to execute the diagnostic test:
1. Open the [MAIN MENU].
2. Select [INITIAL SETTING], then press the left button.
3. Select [TEST], then press the left button.
4. Select [SELF TEST], then press the left button.
5. To stop the test at any time, press the MENU key.
In a few moments the results of the
test are displayed. The ROMs and
RAMs of the SPU, RFC, Control
Unit, Trackball Control Unit and
SD-Card readers are checked for
proper operation. "OK" appears for
normal operation. If "NG" (No
Good) appears, corresponding
components may be defective.
Consult your dealer. In the middle
of the display the rpm of the anten-
na unit and various voltages are
displayed.
Note: To stop the test, press the F1
key three times.
True motion orientation
not working correctly
1) Incorrect menu setting
2) Speed entry incorrect
3) TM display inaccurate
1) Referring to section 1.29, select TM
orientation mode.
2) Enter correct own ship speed referring
to section 1.12.
3) Make sure that speed and compass in-
puts are accurate.
Target not tracked cor-
rectly
Poor definition of targets in
sea clutter
Adjust A/C SEA and A/C RAIN referring to
section 1.19 and section 1.20.
Buttons on trackball
module operated but
no response
Trackball module Replace trackball module.
Picture is not updated
with each sweep.
1) Slots in rotating disc in
antenna unit
2) Motor brushes
1) Remove foreign material (carbon,
grease, etc.) from slots.
2) Replace motor brushes if they are
shorter than 6 - 7 mm.
Problem Possible cause Remedy
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