Furuno FR-8051 manual Advanced-level Troubleshooting, Serviceman qualification

Page 51

4.2Advanced-level Troubleshooting

This paragraph describes how to cure hardware and software troubles which should be carried out by qualified service personnel.

Note: This radar equipment contains complex modules in which fault diagnosis and repair down to component level are not practicable by users.

Serviceman qualification

All adjustments of radio transmitter during or coinciding with the installation, servicing, or maintenance which may affect the proper opera- tion must be performed by or under the immedi- ate supervision and responsibility of a person holding an operator certificate containing a ship radar endorsement.

This is what the U.S. Codes of Federal Regula- tions part 80.169 implies (not exact extract).

As such, every administration sets forth its own rule; service personnel must be aware of this kind of competency requirements.

Problem

Check point and probable

Remedy

 

cause

 

 

 

 

 

 

 

Power turned on but radar

1.

Blown fuse F1351

1.

Replace blown fuse.

does not operate at all.

2.

Mains voltage/polarity

2.

Correct wirings and input voltage.

Control panel is not

3.

Power Supply Board

3.

Replace Power Supply Board.

illuminated either.

4.

Illumination LEDs

4.

Replace defective LEDs.

 

 

 

 

 

CRT brilliance adjusted but

1.

INSTALL 3 menu setting

1.

Select "MAIN" for main radar.

no picture

2.

CRT voltage

 

(For further details consult a

 

3.

SPU Board

 

FURUNO agent or dealer.)

 

 

 

2.

Check high voltage supply with

 

 

 

 

utmost care.

 

 

 

3.

Replace SPU Board.

 

 

 

 

 

Antenna not rotating

1.

Power supply line of antenna

1.

Check connection and continuity

 

 

motor

 

of signal cable.

 

 

 

 

Alphanumeric data and

1. SPU Board

1.

Replace SPU Board.

marks are not displayed in

 

 

 

 

Transmit status.

 

 

 

 

 

 

 

 

 

4 – 2

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Page 50 Page 52
Contents Marine Radar First Edition NOV Safety Information Do not diassemble or modify the equipment Iii Radio Frequency Radation HazardUse the correct fuse Table of Contents Maintenance Features Word to FR-8051/8111/8251 Owners ForewordVii Configuration of FR-8051/8111/8251 Specifications Antenna UnitTransceiver Module Others Power Supply and Power ConsumptionDisplay Unit Environmental ConditionsName Type Qty Remarks Equipment ListsStandard Set XiiName Type Code No Remarks Optional EquipmentSpare Parts XiiiCategorization by Specification XivFunction Type Control Description Operation25 NM Display IndicationsDisplay indications lower part Turning the Radar On/Off Selecting RangeTransmitting, Stand-by Presentation Mode Selecting presentation modePresentation mode Description Representative display Description Presentation modeMenu Overview Basic menu operationChanging pages on the Initial menu MK Erase erase all fixed marks Menu treeInitial Tune SET AUTO, Manu SPD Mode MAN, LOG, NAV Selecting tuning mode Tuning the ReceiverAdjusting Sensitivity Adjusting Picture BrillianceAutomatic anti-clutter control Adjusting Brilliance of Control Panel and MarkersAdjusting Range Ring Brilliance Suppressing Sea ClutterMeasuring range by the range rings Suppressing Rain ClutterHeading and North Markers Measuring the RangeMeasuring Bearing Collision Assessment by Measuring Range Offset EBL Canceling the cursor offsetOff-centering the Picture Index LinesZoom Inscribing Marks on the DisplayFunction key Own Ship Speed Turning on a functionAutomatic speed input Manual speed input Ship’s GraphicInterference Rejector Echo TrailsTrail reference Canceling echo trailStarting echo trail Trail timeElectronic Plotting E-plot Trail brilliancePlotting a target Vector time Canceling target plottingTarget data True or relative vectorActivating the guard zones Setting a Guard Alarm ZoneSetting a guard zone Selecting guard zone typeHow to turn on echo averaging Watch AlarmSilencing the aural alarm Canceling the guard zone and guard alarm26 Echo average Suppressing Second-Trace EchoesSelecting Pulselength Presetting pulselengthEcho Stretch Noise RejectionWaypoint Display Outputting Cursor Position TLL dataSelecting pulselength set to use Alarm Output Signal On/Off Selecting Unit of Range Measurement, Bearing ReferenceSector Blanking Range Resolution Radar ObservationRadar Picture, Target Properties and Radar Pulse Multiple echoes Bearing ResolutionFalse Echoes Indirect echoesBlind and shadow sectors Minimum and Maximum RangesSide-lobe echoes Minimum rangeLocating a Ship or Survival Craft in Distress by Sart Gain When Working on the Antenna Unit MaintenancePart Type Life expectancy Remarks Interval Check point Check and measures RemarksTroubleshooting Simple TroubleshootingProblem Remedy Advanced-level Troubleshooting Serviceman qualificationProblem Check point and probable Remedy Cause Problem Check point and probable Remedy Cause Problem Check point and probable Remedy Cause Diagnostic test, test pattern Diagnostic TestAntenna Unit Location of PartsModulator Trigger RF Transceiver UnitRF transceiver unit FR-8051/8111 Display unit, top view Display Unit common to all modelsDisplay unit, right side view Display Meaning Transmitter normal Receiver normal Performance MonitorOperating a performance monitor Transmitter Receiver PerformanceAuto Plotter ARP-15 Video Plotter RP-15Fluxgate Heading Sensor C-2000 Page
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