qsc_powerlight3_pl325_pl340_pl380 电路图.pdf

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1、Technical Service Manual PowerLight3 Series PL325 PL340 PL380 *TD-000274-00* *TD-000274-00* Rev. A QSC Audio Products, LLC Costa Mesa, CA 92626 USA RadioFans.CN 收音机爱 好者资料库 RadioFans.CN 收音机爱 好者资料库 PL3 Series Service Manual1 TD-000274-00 Rev. A QSC Audio Products, LLC Technical Services Group Phone:1-

2、800 QSC AUDIO (1-800-772-2834) USA only +1 (714) 957-7150 Fax:+1 (714) 754-6173 Postal:1665 MacArthur Blvd. Costa Mesa, California 92626 USA E-mail:tech_ Web: (product information and support) (parts and accessory sales) PL325 PL340 PL380 PowerLight 3 Series Technical Service Manual Copyright 2008 Q

3、SC Audio Products, Inc. All rights reserved. RadioFans.CN 收音机爱 好者资料库 2QSC Audio Products, LLC PL325 and PL340 amplifier, rear view PL380 amplifier, rear view PL3 Series Service Manual3 TD-000274-00 Rev. A Table of Contents Tables and Figures.4 Specifications.6 1. Introduction.7 1.1 Restriction of Ha

4、zardous Substances Directive (RoHS). 7 1.2 Service bulletins and updates. 7 1.3 The well-equipped service bench . 7 1.4 Working with surface-mount components. 8 1.5 PL380 Service Fixture . 10 2. Technical Descriptions and Testing .14 2.1 PL380 Circuit Description . 14 2.2 PL380 Major Circuit Blocks

5、. 16 2.3 PL380 Test Procedure . 21 2.4 PL340 Test and Calibration Procedure . 24 2.5 PL325 Test and Calibration Procedure . 27 3. Troubleshooting.31 3.1 PL380: Symptoms, causes, and remedies. 31 3.2 PL325 and PL340: Symptoms, causes, and remedies. 39 PLC Power Supply Restoration Kit . 43 4. Printed

6、Circuit Boards.53 4.1 PL325 and PL340 Amplifier . 53 Main module circuit board assembly . 53 Input module circuit board assembly . 56 4.2 PL380 Amplifier . 58 Main module circuit board assembly . 58 5. Schematic Diagrams .64 5.1 PL325 Schematics . 64 5.2 PL340 Schematics . 72 5.3 PL380 Schematics .

7、80 6. Replacement parts.89 6.1 Semiconductor package descriptions and pinouts . 89 6.2 PL325 parts and assemblies. 93 PL325 Power Amplifier (120V) (QSC part # FG-032500-00) . 93 PL325 Power Amplifier (100V) (QSC part # FG-032500-01) . 93 PL325 Power Amplifier (230V) (QSC part # FG-032500-02) . 93 Ch

8、assis Assembly PL325 (120V) (QSC part # WP-032500-00) . 93 Chassis Assembly PL325 (100V) (QSC part # WP-032500-01) . 94 Chassis Assembly PL325 (230V) (QSC part # WP-032500-02) . 95 PCB Assembly PL325 (120V) (QSC part # WP-032501-00). 95 PCB Assembly PL325 (100V) (QSC part # WP-032501-01). 98 PCB Ass

9、embly PL325 (230V) (QSC part # WP-032501-02). 101 Input Assembly PL325 (QSC part # WP-032502-00) . 105 6.3 PL340 parts and assemblies. 106 PL340 Power Amplifier (120V) (QSC part # FG-034000-00) . 106 PL340 Power Amplifier (100V) (QSC part # FG-034000-01) . 106 PL340 Power Amplifier (230V) (QSC part

10、# FG-034000-02) . 106 Chassis Assembly PL340 (120V) (QSC part # WP-034000-00) . 106 Chassis Assembly PL340 (100V) (QSC part # WP-034000-01) . 107 Chassis Assembly PL340 (230V) (QSC part # WP-034000-02) . 108 PCB Assembly PL340 (120V) (QSC part # WP-034001-00). 108 PCB Assembly PL340 (100V) (QSC part

11、 # WP-034001-01). 112 PCB Assembly PL340 (230V) (QSC part # WP-034001-02). 115 Input Assembly PL340 (QSC part # WP-034002-00) . 118 6.4 PL380 parts and assemblies. 120 PL380 Power Amplifier (120V) (QSC part # FG-038000-00) . 120 PL380 Power Amplifier (100V) (QSC part # FG-038000-01) . 120 PL380 Powe

12、r Amplifier (230V) (QSC part # FG-038000-02) . 120 4QSC Audio Products, LLC Tables and Figures Chassis Assembly PL380 (120V) (QSC part # WP-038000-00) . 120 Chassis Assembly PL380 (100V) (QSC part # WP-038000-01) . 121 Chassis Assembly PL380 (230V) (QSC part # WP-038000-02) . 122 PCB Assembly PL380

13、(120V) (QSC part # WP-038001-00) through January 2008 . 122 PCB Assembly PL380 (100V) (QSC part # WP-038001-01) through January 2008 . 126 PCB Assembly PL380 (230V) (QSC part # WP-038001-02) through January 2008 . 130 PCB Assembly PL380 (120V) (QSC part # WP-038001-00) from February 2008 . 134 PCB Assembly PL380 (100V) (QSC part # WP-038001-01) from February 2008 . 138 PCB Assembly PL380 (230V) (QSC part # WP-038001-02) from February 2008 . 142 Table of Contents (continued) PL325 and PL340 am