Page 626 - The ROV Manual - A User Guide for Remotely Operated Vehicles 2nd edition

626 CHAPTER 22 It’s the Little Things That Matter
Thrusters
Tether to surface
FIGURE 22.10
Basic submersible schematic.
Lights
Camera
Manipulator
Sonar
Positioning
In general, follow these steps when the ROV system fails:
1. Obtain the service manual for the ROV system in question. 2. Observe the conditions in which the symptoms appear.
3. Make note of as many of the symptoms as possible.
4. Use senses to locate the source of the problem.
5. Retry.
6. Document the finding and test results.
7. Assume one problem (when multiple symptoms are present, troubleshoot the easiest one first). 8. Diagnose to a section (fault identification).
9. Consult the troubleshooting chart of the manufacturer’s maintenance manual.
10. Localize to a stage (fault localization). 11. Isolate to a failed part (fault isolation). 12. Repair.
13. Test and verify.
Connector
Driver board PCB
Controller/ CPU/video
Tool or actuator
Instrument package