Sperry Marine NAVIGAT X gyrocompass overhaul due to gyro heading hunting with error of 7 degrees or more at sea
Posted on11/03/2019 Ship crew complaint that gyro heading were unstable at sea. Heading swing away from actual heading from time to time approximately 7 degrees or more in . Conduct gyro overhaul.Step 1 : Isolate ship power to the system.Step 2 : Allow gyrosphere to spin down for approximately 45mins.Step 3 : Drain out the gyro […]
How to test a Sperry Marine VMFT PCIO Board 65900800-6A without a PCIO power supply unit.
Posted on08/04/2019 How do we test a Sperry Marine VMFT PCIO Board if no PCIO power supply in hand?Do some study on this pcb and we realise that the PCIO power supply provide +24Vdc, +/-15Vdc to the PCIO board.The PCIO power supply giving power to PLP plug on PCIO board. This PLP plug then route […]
Sperry Marine VMFT Trackball push button faulty
Sperry Marine VMFT/BME radar / ecdis operator station uses trackball to operate the system.Many times when the trackball was heavily used by ship crew to activate or enable/disable a function, it was pushed many times until the MTBF(mean time between failure) has reached the maximum life span. This happens normally on the left push button […]