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POWER AMPLIFIER

SERVICE MANUAL

CE Series CE 4000
Some models may be exported under the name Amcron®

© 2002 by Crown Audio, Inc., P.O. Box 1000, Elkhart, Indiana 46515-1000 U.S.A. Telephone: 574-294-8000. Trademark Notice: Amcron® and Crown® are registered trademarks of Crown International. Other trademarks are the property of their respective owners.

130485-1 11/02 Rev. B CE 4000 Service Manual

130485-1 Rev. B

The information furnished in this manual does not include all of the details of design, production, or variations of the equipment. Nor does it cover every possible situation which may arise during installation, operation or maintenance. If you need special assistance beyond the scope of this manual, please contact the Crown Technical SupportGroup. Mail: P.O. Box 1000 Elkhart IN 46515-1000 Shipping: Crown Factory Service 1718 W. Mishawaka Road Elkhart IN 46517 Phone: (800) 342-6939 / (574) 294-8200 FAX: (574) 294-8301

CAUTION
TO PREVENT ELECTRIC SHOCK DO NOT REMOVE TOP OR BOTTOM COVERS. NO USER SERVICEABLE PARTS INSIDE. REFER SERVICING TO QUALIFIED SERVICE PERSONNEL. DISCONNECT POWER CORD BEFORE REMOVING REAR INPUT MODULETO ACCESS GAIN SWITCH.

AVIS
À PRÉVENIR LE CHOC ÉLECTRIQUE N’ENLEVEZ PAS LES COUVERTURES. RIEN DES PARTIES UTILES À L’INTÉRIEUR. DÉBRANCHER LA BORNE AVANT D’OUVRIR LA MODULE EN ARRIÈRE.

TO REDUCE THE RISK OF ELECTRIC SHOCK, DO NOT EXPOSE THIS EQUIPMENT TO RAIN OR MOISTURE!

WARNING

The lightning bolt triangle is used to alert the user to the risk of electric shock.

Theexclamation point triangle is used to alert the user to important operating or maintenance instructions.

II

©2002 Crown Audio, Inc.

130485-1 Rev. B 130485-1 Rev. B

CE 4000 Service Manual

Revision History
Revision Number
Rev. A Rev. B

Date
05-2001 11-2002

Comments
Initial Printing Added missing parts list on Page 5-76. Updated area code and mailing address on Pages 1, 2and 7. Updated sections 3.2.4, 4.3.3, 4.3.9, 4.4.5, 4.6.1, 4.6.8, 4.7.2, 4.7.3, Figure 4.16. Added notes to pages 5-39, 5-73, 5-97.

©2002 Crown Audio, Inc.

III

CE 4000 Service Manual

130485-1 Rev. B

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IV

©2002 Crown Audio, Inc.

130485-1 Rev. B

CE 4000 Service Manual

Table of Contents
1Introduction........................................................................................1-1
1.1 Introduction ............................................................................................1-1 1.2 The CE 4000 Amplifier ...........................................................................1-1 1.3Scope.....................................................................................................1-1 1.4 Warranty.................................................................................................1-1

2 Specifications ....................................................................................2-1 3 Theory of Operation ..........................................................................3-1
3.1 Audio Signal Path..................................................................................3-1 3.1.1 Input Stage ...................................................................................3-1 3.1.2 Error Amplifier...............................................................................3-1 3.1.3 Modulator .....................................................................................3-1 3.1.4 TriangleGenerator........................................................................3-2 3.1.5 Output...........................................................................................3-2 3.1.6 Output Filter..................................................................................3-3 3.2 Protection and Control Circuitry.............................................................3-3 3.2.1 Current...
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