Furuno FR1500 Mk3 User Manual Page 83
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- Table of contents
- TROUBLESHOOTING
- BOOKMARKS
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-5.1-
5 MAINTENANCE
WARNING
Do not open the equipment
Hazardous voltage which can cause electrical shock exists inside the equipment.
Only qualified personnel should work inside the equipment.
Turn off the radar power switch before servicing the antenna unit. Post a
warning sign near the switch indicating it should not be turned on while the
antenna unit is being serviced.
Prevent the potential risk of being struck by the rotating antenna and exposure to
RF radiation hazard.
Wear a safety belt and hard hat when working on the antenna unit.
Severe injury or death can result if someone falls from the radar antenna mast.
Notice for technicians
The display unit designed to run on AC voltage has a
switch (S2) at its rear to cut off 115/230 V supply from
internal circuits. Turn off the switch when accessing
inside the display unit.
Switch S2
5.1 Periodic Maintenance Schedule
Periodic checks and maintenance are important for proper operation of any electronic systems. This
chapter contains maintenance instructions to be followed to obtain optimum performance and the
longest
possible life of the equipment.
Interval Check point Check and measures Remarks
3 to 6
months
Exposed nuts
and bolts on
antenna unit
Check for corroded or
loosened nuts and bolts. If
necessary, clean and repaint
them thickly. Replace them if
heavily corroded.
Sealing compound may be
used instead of paint. Apply a
small amount of grease
between nuts and bolts for
easy removal in future.
Antenna radiator Check for dirt and cracks on
radiator surface. Thick dirt
should be wiped off with a
soft cloth dampened with
fresh water. If a crack is
found, apply a slight amount
of sealing compound or
adhesive as a temporary
remedy, then call for repair.
Do not use plastic solvent
(acetone) for cleaning. If you
need to remove ice from
antenna unit, use a wooden
hammer or plastic head
hammer. Crack on the unit may
cause water ingress, causing
serious damages to internal
circuits.
- SHIPBORNE RADAR AND ARPA 1
- *00080840400**00080840400* 2
- *OME34500T00**OME34500T00* 2
- SAFETY INSTRUCTIONS 3
- TABLE OF CONTENTS 5
- INTRODUCTION 7
- •1 menu are not accessible 9
- ANTENNA RADIATORS 10
- RF TRANSCEIVER 10
- DISPLAY UNIT 10
- INTERFACE 10
- POWER SUPPLY 10
- 1 OPERATIONAL OVERVIEW 13
- Video Freeze-up Recovery 13
- 1.3 Control Description 14
- 1.4 CRT Brilliance 15
- 1.6 Tuning the Receiver 15
- 1.7 Degaussing the Screen 16
- 1.9.2 Manual speed input 17
- PULSE 1 M1 18
- H U RM 18
- 1.11 Presentation Modes 19
- 1.15 Suppressing Sea Clutter 23
- 1.17 Interference Rejector 24
- 1.18 Measuring the Range 25
- 1.19 Measuring Bearing 26
- 1.22.1 Introduction 29
- 1.23 Off-centering (shift) 30
- 1.24 Echo Averaging 31
- 1.25.1 Plotting a target 33
- 1.25.2 Cancelling 34
- 1.25.3 Vectors 34
- CPA/TCPA 35
- 1.25.8 Past plot points 36
- 1.26.2 Trail gradation 37
- 1.26.4 Thin trails 37
- 1.26.5 Restoring trails 38
- 1.27 Parallel Index Lines 39
- 1.30 Markers 41
- 1.32 [F1] Key 42
- 1.33 [F2] Key 43
- 1.34 FUNCTION Key 44
- -1.34 46
- 1.36.1 Echo stretch 47
- 1.36.2 Contrast 47
- 1.37 Watch Timer 48
- 1.38 Noise Rejector 49
- 1.39 Navigation Data 49
- 1.42 Degaussing Interval 50
- 1.43 Background Color 50
- 1.44 Clutter Sweep 50
- 1.45 Day, Night Brilliance 51
- 1.46 Contrast 51
- 1.47.1 Preparation 52
- 1.48 Alarms 56
- 1.51 Echo Area (R-type only) 59
- 2.1 Introduction 60
- 2.2 Criteria of Tracking 61
- Own ship maneuvers 62
- Other ship maneuvers 62
- 2.5 Acquiring Targets 65
- - TARGET SWAP 66
- 2.5.2 Automatic acquisition 66
- 2.6.1 Individual targets 67
- 2.6.2 All targets 67
- 2.7.1 Vector time 68
- 2.7.2 Vector start time 68
- 2.9 Past Position Display 69
- 2.10 Set and Drift 69
- 2.11 Alarms 70
- 2.11.3 Guard zone alarm 71
- 2.13 Outputting Target Data 72
- 2.14 Diagnostic Sequence 73
- Sea returns 74
- Indirect echoes 75
- 3 RADAR OBSERVATION 76
- Bearing accuracy 77
- Range measurement 77
- 3.2 False Echoes 78
- Screen A: When SART 79
- is distant 79
- Screen B: When SART 79
- is close 79
- 3.4 RACON (Radar Beacon) 81
- 5 MAINTENANCE 83
- 5.3 Replacement of Batteries 84
- 6 TROUBLESHOOTING 85
- Serviceman qualification 86
- Service call 86
- (Continued on next page) 87
- 6.3 Diagnostic Test 90
- 6.4 Menu Hierarchy 92
- [MENU] key + 93
- 7 OPTIONAL EQUIPMENT 95
- 9 nm 9 nm 96
- Description of Sentences 99
- * Not used 102
- *: Not used 103
- T = tracking 106
- Figure A-5 Scanner unit 110
- Figure A-6 RF module 111
- MD Board 112
- 9.2 Circuit diagrams 113
- CHANNEL 2 OUTPUT 114
- 9.3 Parts list 116
- 2 FR-1505/1515/1525 MARK-3 117
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