Problem Probable cause or Remedy Check points

				6. MAINTENANCE & TROUBLESHOOTING
		Advanced-level troubleshooting

Problem		Probable cause or		Remedy
Problem		check points		Remedy
		check points

Interference rejector	1)	SPU Board	1)	Replace SPU Board.
is not working (inter-
ference rejection
level not displayed)

Echo stretch is not	1)	SPU Board	1)	Replace SPU Board.
working (Neither
ES1, ES2 or ES3 is
displayed)

Range rings are not	1)	Adjust their brilliance on the	1)	Replace associated circuit board if unsuc-
displayed		Brill/Color menu.		cessful.
	2)	SPU Board	2)	Replace SPU Board.

6-7

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Image 115

Furuno FR-8062, FR-8252, FR-8122 manual Problem Probable cause or Remedy Check points

Contents

FR-8062 FR-8122 Model FR-8252 00015331616 USA How to discard this product How to discard a used batteryGeneral European Union Safety Instructions Electrical Shock Hazard Iii TFT LCD Table of Contents Table of Contents Radar Observation Vii IN-1 SP-1Viii Model, output, range, antenna FeaturesForeword Word to the Owner of the FR-8xx2 Marine Radar Specification and function availability Radar Specifications and Function AvailabilityDescription Specification River Sea FR-8252 System Configuration FR-8122, FR-8062 Xii Controls Operational OverviewDisplay unit Remote controller Remote controller FR-8252 Turning the Radar On/Off, TransmittingQuick start Start-up screen Watchman Display Indications Menu Adjusting Display Brilliance, Panel DimmerMenu Overview Brill/Panel dialog box System Menu description Tuning TuningTuning options Tuning indicator Presentation Modes Choosing presentation modeDescription of presentation modes True motion mode North-up mode Choosing a Range Scale Automatic resetting of own ship marker in true motion mode Echo Choosing a Pulse Length Manual gain adjustment Adjusting the Gain sensitivityChoosing gain adjustment method Setting automatic gain level Suppressing Sea Clutter Choosing sea clutter adjustment methodSetting automatic sea clutter suppression level SEA indicator Suppressing Rain Clutter Manual sea clutter adjustmentChoosing rain clutter adjustment method Rain indicator Manual rain clutter adjustment Setting automatic rain clutter suppression levelAppearance of rain clutter Automatic Suppression of Sea and Rain Clutters Cursor data CursorCursor data Interference Interference Rejector Measuring range by the variable range marker VRM Measuring the Range to a Target Choosing VRM unit Brill/Color Turning Range Rings On/Off, Adjusting Range Ring Brilliance Measuring the Bearing to a Target How to measure the bearing to a target with the EBLMeasuring the bearing with an EBL EBL reference Measuring the Range and Bearing Between Two Targets How to set a target alarm zone Target AlarmSetting a target alarm Silencing the audio alarm Out alarms Choosing alarm typeTemporarily deactivating a target alarm Deactivating a target alarm Choosing speed to use Choosing target strength which triggers target alarmOff Centering the Display Automatic off center Activating automatic off center How to zoomZoom Manual off center Key to erase the message Zoom modeRelative or true zoom mode Target zoom mode Echo Stretch Echo stretch settingsStretch in range direction Stretch in bearing direction Echo Averaging Is automatically disabledDetection can result Trail indications Tively, execute All Cancel on the Trails menuTarget Trails Starting, stopping trails Target Trails Trail mode Trail color Trail gradationTrail level How trail copy works Trail copyNarrow trails Own ship trail Restarting trails Restart feature Trail copy feature ActionTrail length Parallel index lines Adjusting parallel index line orientation and intervalParallel Index Lines Turning parallel index lines on or off TLL key mode Parallel index lines modeOutputting Target Position, Inscribing Origin Mark Temporarily Hiding the Heading Line Custom SetupOrigin mark mode About custom setup Description of custom setup items Description of custom setup itemsMenu item Available settings Custom Setting custom setupsSample custom setups Menu item Application Function list Programming Function Keys F1 and F2 keysFunction key operation Changing function key program Suppressing Second-trace Echoes Noise RejectorHow 2nd trace echoes are produced How watchman works Watchman Display item, color scheme and color Preset color schemesColor Schemes User color scheme Navigation data during standby Navigation DataNavigation data display at standby Navigation data Depth and water temperature graphsNavigation data at the bottom of the screen Wind graph Dynamic Range Characteristics CurveDisplay curve Antenna Speed Waypoint mark Waypoint Marker List of alarm messages Alarm Message DisplayList of alarm messages AIS system Alarm category Alarm name AIS alarm Echo Area Initial menu Customizing Initial MenuOpening the Initial menu Description of Initial sub menu Available ranges Sector Blank Sector Blank Appearance of sector blank GPS buoy menu GPS buoy symbolsGPS Buoy Displaying GPS buoys History display Choosing symbol color Erasing individual GPS buoy symbols Erasing GPS buoy symbolsErasing all GPS buoys symbols Display appearance Remote DisplayUnavailable menu items Menu items not available with the remote display Total TX time indication Items unavailable with Function key F1, F2 This page intentionally left blank Minimum range Radar ObservationGeneral Minimum and maximum ranges Bearing accuracy Radar resolutionBearing resolution Range resolution Sidelobe echoes False EchoesMultiple echoes Sidelobe echoes Shadow sectors Virtual imageShadow sector Virtual image Sart description Sart Search and Rescue TransponderAppearance of Sart echo Radar side lobes Sart range errorsGeneral remarks on receiving Sart Radar bandwidth ARP Operation Usage Precautions ARP Controls for Use with ARPARP Display On/Off ARP menu ARP target mark Acquiring and Tracking TargetsManual acquisition Automatic acquisition Terminating tracking of selected targets Terminating Tracking of ARP TargetsTerminating tracking of all targets Vector What is a vector?Vector Attributes Vector time, vector reference Target movement and history display History Display target past position ARP target data ARP Target Data CPA/TCPA Alarm Lost target mark Proximity AlarmCanceling a lost target Lost Target Symbol Color AIS menu AIS OperationControls for Use with AIS Turning the AIS Display On or Off Appearance of an activated target AIS SymbolsIs changed while using the head-up mode Activating, Sleeping Targets AIS data Displaying AIS Target Data Sorting Targets Display Range Number of Targets to Display Displaying Targets Within a Specific Sector Vector Attributes History Display target past position 12 CPA/TCPA Alarm Proximity Alarm Ship speed Reporting interval Lost target symbolRemoving all lost AIS targets from the display Ship speed and reporting interval GPS GPS OperationNavigator Type GPS menu Datum Waas Setup Satellite monitor Satellite Monitor Type 16 message Weather Information GPS Sensor Installation Position Offset To perform cold start, do the following Cold Start Do not open the equipment Maintenance & Troubleshooting Maintenance Preventive MaintenanceInterval Check point Remedy Unit and fuses Fuse ReplacementMagnetron Life LCD Backlight Life Display unit Trackball Maintenance STBY/TX key to Simple TroubleshootingSimple troubleshooting But Then Down to component level are not practical by users Advanced-level TroubleshootingAdvanced-level troubleshooting Cessful, replacement of the keypad may Problem Probable cause or Remedy Check points Factory menu Diagnostic TestFactory 㪇㪊㪌㪐㪉㪉㪐㪄㪯㪯㪅㪯㪯 DIagnostics screen GPS Test LCD TestLCD test screens Appendix Choices for Function 1 Setup, Function 2 Setup Nm for distance 0.1 nm or greater ARP*1 AIS*2 GPS*1 FR-8062/FR-8122/FR-8252 Furuno Specifications of Marine Radar Furuno Coating Color FR-8xx2 Series E3539S01G AIS Index VRM IN-2 Declaration of Conformity

Advanced-level troubleshooting

Problem

Probable cause or

Remedy

check points