Installation manual

Simrad SP70
170
850-164186 / Rev.D
Transceiver Unit
Dust filter
There is a dust filter in the bottom of the Transceiver Unit. To
avoid overheating, this must be inspected, and if necessary,
cleaned once every third month.
The dust filter is accessible from the outside of the Transceiver
Unit, by unscrewing the eight finger nuts in the bottom of the
unit. The filter should be vacuum cleaned, or washed in soap
and water. If washed, the filter must be dried thoroughly before
being reinstalled.
Replacing fuses
The Transceiver Unit is fused with two 8A slow blow main
fuses (F201 and F202) located on the front of the Power Supply.
SP70 Transceiver Unit fuse
locations
(A) = Dust filter
If one of the fuses are blown, the lamp L201 should be lit, while
lamp L202 should be extinguished. If L201 is not lit, check the
fuses on the ship’s main power system.
In addition, the High Voltage Unit is fused with two 8A slow
blow fuses (F204 and F205). If one of these fuses are blown, the
lamp L205 will be lit, while lamp L206 will extinguish.