E1999, Shure Incorporated Printed in U.S.A.
25B1021 (BG)
Service Manual
U1/U1L Body-Pack
UHF Transmitter
General
Characteristics
The Shure U1/U1L Body-Pack UHF Transmitter is a microprocessor-
controlled body-pack transmitter operating in the UHF frequency range.
This product is intended for use in high-end installed sound, rental, and
concert sound applications. Different frequency variations are available.
Controls and Indicators
1. Antenna
2. Programmable Display
3. Input Connector
(U1L uses LEMO connectors)
4. ON/OFF Switch
5. On/Off LED
6. Belt Clip
7. MODE Button
12
13
11
10
O
N
5
4
1
6
9
7
2
O
FF
1
3
8
8. SET Button
9. Audio Gain Control
10. Battery Cover Release Tabs
11. Battery Compartment Cover
12. Battery Fuel Gauge
13. Battery Compartment
NOTE: All models shipped after February 1999
have a soldered attached antenna to replace the
screw-on removable antenna. .
Figure 1. U1/UL Transmitter Controls and Indicators
Service Note: Shure recommends that all service procedures be performed by a Factory-Authorized
Service Center or that the product be returned directly to Shure Brothers Inc.
Licensing: Operation may require a user license. Frequency or power-output modifications
may violate this product’s approvals. Contact your country’s communications authorities.
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