Appendices; Appendix 1 - Troubleshooting - Simrad RS90 Operating Manual

9

Appendices

Appendix 1
1.
The radio will not power up.
A fuse may have blown or there is no voltage getting to the
transceiver.
Check the power cable for cuts, breaks, or squashed sections.
After checking the wiring, replace the 10 Amp fuse.
Check the battery voltage. This must be at least 10.5V.
2.
The power wires may have been reversed.
Check that the red wire is connected to the positive battery
terminal, and the black wire is connected to the negative battery
terminal.
3.
The speaker makes popping or whining noises when the vessel's
engine is running.
Electrical noise may be interfering with the transceiver.
Re-route the power cables away from the engine.
Add a noise suppressor to the power cable.
Use resistive spark plug wires and/or use an alternator whine filter.
4.
No sound from the external speaker.
Check that the external speaker is enabled in Setup. See "External
speaker" on page 79.
Check that the external speaker cable is physically connected.
Check the soldering of the external speaker cable.
5.
Transmissions are always on low power, even when high (Hi) power
is selected.
The antenna may be faulty.
Test the transceiver with a different antenna.
Have the antenna checked out.
The transceiver blows the fuse when the power is switched on.
Appendices | RS90 Operating Manual
- Troubleshooting
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