User guide

FS 20/25 Operators Manual 901-10037001/1.1
Maintenance and Troubleshooting Page 5.1
7
Kongsberg Simrad Mesotech Ltd.
Port Coquitlam, BC - Canada
5.5.3 Common Fault Recognition Charts
This is a more complicated system than prior FS3300, MKI and MKII Processor
based systems. In simple terms, the issues that existed before with the units in the
deployment package (whatever configuration of heads and sensor modules) and the
full 3
rd
wire (including the slip rings) are the same. The relationship between the PC
and the PWR/TTM unit and how the PWR/TTM unit interacts with the units in the
deployment package is new, much more involved and will be the area that is the
hardest to both explain and recognize if the problem is there.
As operators of the FS20 and FS20/25 systems, you should think of the system
broken down into five distinct sub-sections as follows:
• PC to the “Digital” portion of the PWR/TTM Unit
• “Analog” portion of the PWR/TTM Unit to the deployment package units
• PWR/TTM Unit
• Units in the deployment package itself (Heads, Sensor Modules and Egg
Receivers)
• Full 3
rd
wire assembly (Including slip rings and cable to wheelhouse)