4. Maintenance
Spare Fuses
The Aprisa LTE router PBA contains two fuses in the power input with designators F1 and F2. Both the
positive and negative power connections are fused. The fuse type is a Littlefuse 0453005.0MRSN with a
rating of 5 A.
To replace the fuses:
1. Remove the input power and antenna cables.2. Unscrew the enclosure securing screws (posi 2).
2. Separate the enclosure halves.
CAUTION: Antistatic precautions must be taken as the internal components are static sensitive.
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