22. Maintenance and Troubleshooting
22-10
Problem
Probable causes or check points Remedy
Radar is properly tuned but poor
sensitivity
1) Deteriorated magnetron
2) Detuned MIC
3) Dirt on radiator face
4) Water ingress to the
waveguide or other
feeder line
5) Second trace echo
rejection is ON
1) With the radar transmitting on 48 nm
range, check magnetron current.
If current is below normal, magnetron may be
defective. Replace it.
2) Check MIC detecting current. If it is
below normal value, MIC may have
become detuned. MIC must be
tuned.
3) Clean the radiator surface.
4) Remove water from the feeder line.
5) Disable the second-trace echo
rejector referring to section 2.24 Suppressing
Second-trace Echoes.
Range changed but radar picture
not changing
1) Defective range key
2) SPU board
3) Video freeze-up
1) Try to hit
RANGE
key several times. If
unsuccessful, replacement of keypad may be
required.
2) Replace SPU board.
3) Turn off and on radar.
Interference rejector is
inoperative (interference
rejection level not displayed)
SPU board
Replace SPU board.
Echo stretch is ineffective
(neither ES1, ES2 nor ES3 is
displayed)
SPU board
Replace SPU board.
Range rings are not displayed
1) Adjust the brilliance of range
rings on the
BRILL menu to see if intensity
is increased
2) SPU board
1) Replace associated circuit board if
unsuccessful.
2) Replace SPU board.
Poor discrimination in range
Sea clutter control not
functioning properly
Improper setting of A/C SEA. If A/C SEA is
seen only at very close range, suspect inaccurate
frequency of reference oscillator.
True motion presentation not
working correctly
1) Poor contact of MODE key
(full keyboard)
2) Selection not accessed.
3) Speed entry incorrect
4) TM display inaccurate
1) Try to press MODE key a little harder.
2) Press MODE key or operate
PRESENTATION MODE box until TM
appears.
3) Enter correct own ship speed referring to
section 2.5 Entering Own Ship's Speed.
4) Make sure that speed and compass
inputs are accurate.
Target not tracked
correctly
Poor definition of targets in sea
clutter
Adjust A/C SEA and A/C RAIN controls
referring to section 2.8 Suppressing Sea Clutter
and 2.9 Suppressing Rain Clutter.
Buttons on trackball module
operated but no response
Trackball module
Replace trackball module.
Содержание FCR-2107 series
Страница 42: ...1 Operational Overview 1 20 This page intentionally left blank...
Страница 73: ...2 Radar Operation 2 31 ROUGH SEA SHIP HARBOR COAST Picture setup options and default settings con t...
Страница 154: ...5 AIS Operation 5 28 This page intentionally left blank...
Страница 253: ...7 Vector Chart Material 7 81 More information is available in text More information is available as a picture...
Страница 255: ...7 Vector Chart Material 7 83 Recommended track defined by two beacons...
Страница 256: ...7 Vector Chart Material 7 84 Recommended track defined by a building and a beacon...
Страница 257: ...7 Vector Chart Material 7 85 Measurement mile tails tails...
Страница 279: ...8 Manual Updates 8 19 12 10 11 9 13 7 8 Set positions with cursor and push left mouse button Click Accept button...
Страница 298: ...9 Chart Alerts 9 14 This page intentionally left blank...
Страница 322: ...10 Route Planning 10 24 This page intentionally left blank...
Страница 368: ...14 Backup Operations 14 6 This page intentionally left blank...
Страница 404: ...16 Recording Functions 16 16 This page intentionally left blank...
Страница 406: ...17 NAVTEX Messages 17 2 This page intentionally left blank...
Страница 416: ...19 Parameters Setup 19 8 This page intentionally left blank...
Страница 456: ...Appendix 2 IHO ECDIS Chart 1 AP 4 Information about the chart display 1 Information about the chart display 2...
Страница 457: ...Appendix 2 IHO ECDIS Chart 1 AP 5 Nature and Man made features Port features...
Страница 458: ...Appendix 2 IHO ECDIS Chart 1 AP 6 Depths Currents etc Seabed Obstructions Pipelines etc...
Страница 459: ...Appendix 2 IHO ECDIS Chart 1 AP 7 Traffic routes Special areas...
Страница 460: ...Appendix 2 IHO ECDIS Chart 1 AP 8 Aids and Services Buoys and Beacons...
Страница 461: ...Appendix 2 IHO ECDIS Chart 1 AP 9 Topmarks Color test diagram...
Страница 462: ...Appendix 2 IHO ECDIS Chart 1 AP 10 Mariners navigational symbols...
Страница 464: ...Appendix 3 Interpreting S57 Charts AP 12 Plain or symbolized boundaries Limited or full light sectors...
Страница 467: ...Appendix 3 Interpreting S57 Charts AP 15 Land features Water and seabed features Traffic routes...
Страница 468: ...Appendix 3 Interpreting S57 Charts AP 16 Cautionary areas Information areas Buoys and beacons Lights...
Страница 469: ...Appendix 3 Interpreting S57 Charts AP 17 Fog signals Radars Services...
Страница 472: ...Appendix 3 Interpreting S57 Charts AP 20 Low accuracy Services and small craft facilities Special areas...
Страница 474: ...Appendix 3 Interpreting S57 Charts AP 22 Light descriptions Nature of seabed Geographic names etc...
Страница 476: ...Appendix 3 Interpreting S57 Charts AP 24 This page intentionally left blank...
Страница 511: ...Appendix 5 Digital Interface AP 59 NRX NAVTEX received data...
Страница 544: ...Appendix 6 Parts List and Parts Location AP 92 This page intentionally left blank...
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Страница 556: ......