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FS 20/25 Operators Manual 901-10037001/1.1
Maintenance and Troubleshooting Page 5.1
Kongsberg Simrad Mesotech Ltd.
Port Coquitlam, BC - Canada
PART 5
MAINTENANCE AND
TROUBLESHOOTING
5. TROUBLESHOOTING AND MAINTENANCE.................................................5.3
5.1 INTRODUCTION .........................................................................................5.3
5.2 SYSTEM OVERVIEW..................................................................................5.3
5.2.1 FS 20/25 System ..................................................................................5.3
5.2.2 Trawl Cable Requirements....................................................................5.4
5.3 HANDLING & MAINTENANCE ....................................................................5.4
5.3.1 Wheelhouse Electronics .......................................................................5.4
5.3.2 Trawl Unit..............................................................................................5.5
5.3.2.1 Handling Tips.................................................................................5.5
5.3.2.2 Maintenance Schedule...................................................................5.5
5.3.2.3 Connector Maintenance.................................................................5.6
5.3.2.4 Excessive Impacts.........................................................................5.7
5.3.2.5 Corrosion.......................................................................................5.7
5.3.2.6 Shaft or Transducer Damage.........................................................5.7
5.3.3 Catch Sensors ......................................................................................5.8
5.3.4 Winch Slip-Rings and Trawl Cable........................................................5.8
5.4 MONITORING SYSTEM PERFORMANCE..................................................5.9
5.4.1 Test Cable ............................................................................................5.9
5.4.2 Power Supply Meter Readings............................................................5.10
5.4.3 Trawl Cable Gain ................................................................................5.12
5.4.4 System Error Messages......................................................................5.13
5.5 TROUBLESHOOTING...............................................................................5.15
5.5.1 System Tools......................................................................................5.15
5.5.2 Diagnosing Problems..........................................................................5.16
5.5.3 Common Fault Recognition Charts .....................................................5.17
5.5.3.1 PC to PWR/TTM Unit (Digital) .....................................................5.18
5.5.3.2 PWR/TTM Unit to Deployment Package Units (Analog) ..............5.20
5.5.3.3 PWR/TTM Unit ............................................................................5.22
5.5.3.4 Housing Units (Heads, Sensor Modules and Egg Receivers) ......5.23
5.5.3.5 Full 3
rd
Wire Assembly (Including Slip Rings and Wheelhouse Cable)5.25
5.6 SECTION 1 - CATCH SENSORS ..............................................................5.27
5.7 SECTION 2 - WINCH SLIP RINGS AND TRAWL CABLE.........................5.27
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