Shure U1 User Manual

Shure Incorporated
222 Hartrey Avenue
Evanston IL 60202-3696 U.S.A.
UHF Wireless System
E2000, Shure Incorporated Printed in U.S.A.
25–1021–2 (BG)
SERVICE MANUAL CHANGE NOTICE
U1/U1L UHF BODY-PACK TRANSMITTER
Changes and corrections have been made to the Service Manual for the U1/U1L UHF Body-Pack Trans-
mitter. These changes will make it easier to repair the transmitters. To update your Service Manual,
remove the pages identified in the tables below and replace them with the pages attached to this Change
Notice. Note that there are no changes to pages not specifically identified in the tables below.
U1/U1L SERVICE MANUAL REVISION HISTORY
Release Part Number Date Code
Original 25A1021 QE
Revision 1 25B1021 SA
Revision 2 25C1021 TD
Revision 3 25C1021 AG
Revision 4 25C1021 BF
Revision 5 25C1021 BG
CHANGES EFFECTIVE JULY 12, 2002
REMOVE
these pages from the
U1/U1L Service Manual
INSERT
these Revised pages into the
U1/U1L Service Manual
21 to 25 21 to 25

Shure U1 Specifications

General

Brand	Shure
Model	U1
Category	Transmitter
Language	English

Summary

SERVICE MANUAL CHANGE NOTICE

U1/U1L Service Manual Revision History

Lists revisions of the U1/U1L UHF Body-Pack Transmitter Service Manual.

Circuit Description

Audio Section

Details the audio signal path and processing within the transmitter.

Rf Section

Preliminary Tests

Functional Tests

Test Setup

Describes the necessary connections and settings for functional tests.

Rf Power

Procedure to measure the radio frequency output power.

Current Drain

Procedure to measure the transmitter's current consumption.

Disassembly and Assembly

Service Procedures

Product Changes Summary

Antenna Replacement

Rf Alignment

Rf Alignment Set-Up

Rf Alignment

Power Output Measurement

Audio Alignment

Deviation Reference Voltage

Deviation Reference Voltage Adjustment

Tone Key Level Adjustment

Bench Checks

Dc Problems

Rf Problems

Replacement Parts and Drawings

Model Variations