Furuno FR1500 Mk3 User Manual Page 84
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- Table of contents
- TROUBLESHOOTING
- BOOKMARKS
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-5.2-
Terminal strips
and plugs in
antenna unit
Open antenna cover to
check terminal strip and plug
connections inside. Also
check the rubber gasket of
antenna covers for
deterioration.
When closing antenna covers
in position, be careful not to
catch loose wires between
covers and unit.
6 months
to one
year
CRT and
surrounding
components
High voltage at CRT and
surrounding components
attract dust in environment
which will cause poor
insulation. Ask your nearest
FURUNO representative or
dealer to clean internal high-
voltage components.
If CRT anode rubber cap or
wire sheath is cracked, ask
your dealer to replace it. Wait
for at least 3 minutes until high
voltage components (CRT and
HV capacitors) discharge their
residual charges before
accessing them.
Terminal strips,
sockets, earth
terminal
Check for loose connections.
Check contacts and plugs for
proper seating, etc.
5.2 Life Expectancy of Major Parts
Parts Type Life expectancy Remarks
Antenna motor D8G-571 (X-band) 42 rpm
D8G-571 (X-band) 24 rpm
Gears more than 10,000 h Wind load 100 kt
Magnetron E3560, X-band, 6 kW
MG 5241, X-band, 12 kW
MG 5436, X-band, 25 kW
2,000 - 3,000 h
5.3 Replacement of Batteries
The GYRO CONVERTER Board (option) and the RP Board have a battery. The battery for the RP
Board preserves data when the power is turned off, and its life is about five years. When the battery
voltage of the battery on the RD Board is low, NG (No Good) appears at the diagnostic test for the
RP board. When this happens, contact your dealer to request replacement of the battery.
- 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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