Furuno FA-150, Installation Manual

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A100K11209 v.1.3
VSS-V2 Technical Manual
9 Maintenance
9.1 General
It is recommended to periodically check the system. The system has a
self-test function but it will not check whether the microphone itself is
working properly. To check this, use a horn or similar device that sends
out harmonic signals with higher SPL than the background noise to
activate each microphone to see whether it is detected on the diodes
and monitored in the internal loudspeaker of the master unit. It is also
recommended to visually check all terminal cables and microphone
housing for damages.
Check the microphone unit every 3 months.
9.2 Spare Parts
The microphone housing consists of four microphones and a
preamplifier. The housing is regarded as one spare part. It is designed
to be easily changeable.
Item number Type number Description
1021001020 VSS-MPCP VSS Master PCB – V2
1021001030 VSS-SPCB VSS Slave PCB – V2
1021002020 VSS-MICPCB VSS Mic PCB – V2
1021002040 VSS-MIC VSS Microphone – V2