Maintenance | 439
Aprisa SR+ User Manual 1.11.1
Protected Station Spare Fuses
The Aprisa SR+ Protected Station contains two fuses in the power inputs to the Protection Switch. If the
protected station power supplies are connected and operating but the radios are not operating, it may be
that a power supply input fuse is blown. Spare fuses are located on the Protection Switch board.
To replace Protection Switch fuses:
1. Disconnect the power supply, antenna/s, interface cables and any other connections.
2. Remove the Protected Station shelf from the rack.
3. Turn the Protected Station shelf upside down.
4. Remove the rear securing screws and remove the bottom panel.
5. Locate the spare fuses.
13.8 VDC Power Option
48 VDC Power Option
Remove the 12A spare fuse
Remove the 7A spare fuse
6. Determine which fuse is blown and replace it with the spare.
13.8 VDC Power Option
48 VDC Power Option
The 12A fuses are the main power supply input
fuses
The 7A fuses are the main power supply input
fuses
7. Refit the bottom panel and tighten the two screws.
8. Replace the shelf in the rack and re-connect all the cables.
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