Internal Fuse Replacement - GE TransNET 900 Reference Manual

7.5 Internal Fuse Replacement

The radio is protected by an internal fuse. This fuse can be blown by an
over-voltage transient or an internal failure. Follow the procedure below to
remove and replace the fuse:
1. Disconnect the primary power cable and all other connections to the unit.
2. Place the radio on its back and remove the four Phillips screws at the
corners of the bottom cover.
3. Carefully separate the top and bottom covers. There is a flat ribbon cable
between the top cover's LED panel and the motherboard. You do not
need to disconnect the ribbon cable.
4. Locate the fuse holder assembly behind the power connector.
(See Figure 16).
5. Loosen the fuse from the holder using a very small flat-bladed
screwdriver, then use a small pair of needle-nose pliers to pull the fuse
straight up and out of the holder.
6. Use an ohmmeter or other continuity tester to verify that the fuse is
blown.
7. Install a new fuse by reversing the process.
Replacement fuse: Littelfuse #0454002; 452 Series,
2 Amp SMF Slo-Blo fuse (Part No. 29-1784A03).
8. Re-install the covers, interface cables and check the radio for proper
operation.
50 MDS TransNET Ref. Manual
Invisible place holder
Figure 16.
Internal Fuse and Holder
Assembly Location
MDS 05-2708A01, Rev. F