E1999, Shure Incorporated Printed in U.S.A.
25D1062 (AG)
Service Manual
25D1062 (AG)
U4D Dual Diversity UHF Receiver
General
Characteristics
The Shure Model U4D Dual Diversity UHF Receiver is a microprocessor con-
trolled dual diversity receiver operating in the UHF frequency range. This product
is intended for use in high-end installed sound, rental, and concert sound mar-
kets. Different frequency variations are available in various countries.
Controls and Connectors
5
15
14
18
13
16
17
17 181619 15
7
1
23
5
6
8
9
10
11
12
4
7
1
23 6 8
4
1. MENU Button
2. SELECT Button
3. RF Level Indicators
4. AUDIO Level Indicators
5. Programmable Display
6. + Button
7. – Button
8. Volume Control
9. Headphone Monitor Volume Control
10. Headphone Monitor Status
11. Headphone Input Connector
12. POWER On/Off Switch
13. Power Input Connector
14. Power Output Connector
15. Antenna Input Connectors
16. HIGH Z (Unbalanced) Output Connector
17. Mic/Line Slide Switch
18. LOW Z (Balanced) Output Connector
19. Networking Interface
Figure 1. U4D Receiver Controls and Connectors
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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