Edgetech 4125 SIDE SCAN - Page 15

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SECTION 5: TROUBLESHOOTING .......................................................................................................... 5-1
5.1 Restoring the Operating System to the Hard Drive ...................................................................... 5-1
5.2 Disassembling and Reassembling the Tow Vehicle ...................................................................... 5-1
5.2.1 Disassembly ................................................................................................................ 5-2
5.2.2 Reassembly ................................................................................................................ 5-4
5.3 Calibrating the Compass ............................................................................................................... 5-5
5.3.1 Entering the Known Magnetic Deviation ................................................................... 5-5
5.3.2 Hard Iron Calibration .................................................................................................. 5-6
5.3.3 Soft Iron Calibration ................................................................................................... 5-8
5.4 General Troubleshooting .............................................................................................................. 5-9
5.5 4125-P Portable Topside Processor Troubleshooting................................................................. 5-10
5.6 4125 Tow Vehicle Troubleshooting ............................................................................................ 5-10
5.7 Tow Cable Inspection .................................................................................................................. 5-11
5.7.1 Locating a Shorted Conductor.................................................................................. 5-12
5.7.2 Locating an Open Conductor ................................................................................... 5-12
5.7.3 Locating a Resistance Breakdown ............................................................................ 5-13
5.7.4 Damaged Tow Cable Connector ............................................................................... 5-13
5.8 Part Numbers for Major Topside Components .......................................................................... 5-13
5.9 Part Numbers for Major Tow Vehicle Components.................................................................... 5-14
APPENDIX A: BACKUP AND RESTORE ..................................................................................................... A-1
A.1 Backing up the System Drive .................................................................................................... A-1
A.2 Restoring the System Drive ...................................................................................................... A-1
APPENDIX B: PRINTERS ........................................................................................................................... B-1
APPENDIX C: TOWING CHARACTERISTICS............................................................................................... C-1
C.1 4125 Standard Towfish Cable Layback Plots ............................................................................. C-1
C.1.1 Config. 1: 4125, 207551 Cable - 50m Long ........................................................................ C-3
C.1.2 Config. 2: 4125, 207551 Cable - 100m Long ...................................................................... C-4
C.1.3 Config. 3: 4125, 207551 Cable - 150m Long ...................................................................... C-5
C.1.4 Config. 4: 4125 + 15 lb. Keel Weight, 207551 Cable - 50m Long....................................... C-6
C.1.5 Config. 5: 4125 + 15 lb. Keel Weight, 207551 Cable - 100m Long..................................... C-7
C.1.6 Config. 6: 4125 + 15 lb. Keel Weight, 207551 Cable - 150m Long..................................... C-8
C.1.7 Config. 7: 4125 + Depressor Wing, 207551 Cable - 50m Long .......................................... C-9