Antenna Replacement - Shure U1 Service Manual

Shure U1/U1L Body-Pack UHF Transmitter

Antenna Replacement

Service Procedures
NOTE: All models shipped after February 1999 have
a soldered attached antenna to replace the screw-on
removable antenna. Do not try to remove and replace
the soldered attached antennas.
The top printed circuit board (pcb) is connected to the bottom pcb by
a multi-pin connector. Two wires also lead to the battery connector and a
three-wire flat cable that connects the pcbs to the microphone jack.
Handle the pcbs with care to avoid damaging these connections.
1. Open the battery compartment cover and remove the batteries.
2. Remove the belt clip.
3. Remove the two screws from the back of the case.
4. Lift the top half of the transmitter case away to expose the pcbs.
5. Remove the single screw visible next to the antenna connector.
6. Use the antenna to gently lift up both pcbs far enough so that the
antenna assembly clears the case, or remove the top pcb to gain
better access to the bottom pcb.
7. Remove the antenna by unscrewing it from the connector.
Make sure that the washer on the antenna clears the case.
8. Install the new antenna by screwing it onto the connector. If
necessary, replace the conductive rubber gasket at the base
of the antenna.
9. Return the pcbs to their original position.
10. Reinstall the single screw next to the antenna connector.
11. Perform these steps in reverse order to reassemble the unit.
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25C1021 (BG)