QSC-PowerLightPFCseries-pwr-sm维修电路原理图.pdf

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1、PowerLight Series Two-Channel Power Amplifiers TECHNICAL SERVICE MANUAL *TD-000083-00* TD-000083-00 Rev. Prelim. PowerLight 6.0 II PowerLight 6.0PFC PowerLight 9.0PFC ON OFF PROTECT STANDBY POWER 1 CHANNEL 2 9000 WATT POWER FACTOR CORRECTED PROFESSIONAL AMPLIFIER 2222 3232 2424 2626 2828 3030 -00-00

2、 2020 1818 1414 88 dB 1 - C H A N N E L - 2 dB CLIP -10dB -20dB SIGNAL CLIP LIMITER POWERLIGHT 9.0 PFC HEAR THE POWER OF TECHNOLOGY. RadioFans.CN 收音机爱 好者资料库 RadioFans.CN 收音机爱 好者资料库 Technical Service Manual1 PowerLight 6.0 II, PowerLight 6.0PFC, and PowerLight 9.0PFC QSC Audio Products, Inc. Technica

3、l Services Group Phone:1-800 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) PowerLight Series Technical Service Manual Copyright 2

4、004 QSC Audio Products, Inc. All rights reserved. Document # TD-000083-00, Preliminary Rev. Released November 2004. IMPORTANT NOTICE: This document contains proprietary information that is the property of QSC Audio Products, Inc, and may not be disclosed, reproduced or used without express or writte

5、n consent from QSC Audio Products. PowerLight 6.0 II PowerLight 6.0PFC PowerLight 9.0PFC RadioFans.CN 收音机爱 好者资料库 2QSC Audio Products, Inc. TD-000083-00 PowerLight 9.0PFC PowerLight 6.0PFC PowerLight 9.0 II RadioFans.CN 收音机爱 好者资料库 Technical Service Manual3 PowerLight 6.0 II, PowerLight 6.0PFC, and Po

6、werLight 9.0PFC Table of Contents Performance Specifications . 4 1. Introduction . 5 1.1 Service bulletins. 5 1.2 The well-equipped service bench . 5 1.3 Working with surface-mount components. 5 Two-terminal components (resistors, capacitors, diodes, etc.). 5 Multi-pin components (ICs, etc.) . 6 Thr

7、ee-terminal components (transistors, etc.) . 6 1.4 Series description . 6 1.5 Technical descriptions and theory of operation . 7 Power supplies . 7 Audio circuitry. 7 2. Servicing the amplifier. 8 2.1 Mechanical disassembly and reassembly . 8 Introduction. 8 Tools and materials needed . 8 Disassembl

8、y . 8 Reassembly. 11 2.2 The display board. 13 2.3 AC line filter . 13 2.4 Power supply servicing. 15 Bench testing power supply modules . 15 Replacing switching MOSFETs in PFC models. 15 Suggestions for troubleshooting. 17 Adjusting and calibrating the power supply module. 18 2.5 AC voltage convers

9、ions. 22 2.6 Bias adjustments . 22 3. Troubleshooting. 23 3.1 Initial check . 23 3.2 Preliminary troubleshooting. 23 3.3 Further troubleshooting . 24 4. Parts . 25 4.1 Semiconductor package descriptions and pinouts . 25 4.2 Parts lists . 33 Chassis Assembly (QSC part #WP-000268-00) . 33 Chassis Asse

10、mbly (QSC part # WP-000268-02) . 34 Chassis Assembly (QSC part # WP-000260-00) . 35 Chassis Assembly (QSC part # WP-000260-02) . 36 Chassis Assembly (QSC part # WP-000170-00) . 37 Chassis Assembly (QSC part # WP-000170-02) . 38 Chassis Assembly, Rear (QSC part # WP-000271-00). 39 Chassis Assembly, R

11、ear (QSC part # WP-000264-00). 39 Chassis Assembly, Rear (QSC Part # WP-000172-00). 40 Output PCB Assembly (QSC part # WP-000179-00) . 40 Input PCB Assembly (QSC part # WP-000272-00). 40 Input PCB Assembly (QSC part # WP-000265-00). 41 Input PCB Assembly (QSC part # WP-000175-00). 41 Input Daughterb

12、oard Assembly (QSC part # WP-000178-00). 42 Audio Channel Module Assembly (QSC part number WP-000276-00). 42 Audio Channel Module Assembly (QSC part # WP-000182-00) . 46 Power Supply Assembly (QSC part # WP-000266-00). 50 Power Supply Assembly (QSC part # WP-000266-02). 52 Power Supply Assembly (QSC

13、 part # WP-000262-00). 55 Power Supply Assembly (QSC part # WP-000262-02). 56 Power Supply Controller Assembly (QSC part # WP-000263-00). 58 Power Supply Assembly (QSC part # WP-000173-00). 60 Power Supply Assembly (QSC part # WP-000180-00). 61 Power Supply Controller Assembly (QSC part # WP-000174-00). 63 Display PCB Assembly (QSC part number WP-000176-00). 64 Line Filter Assembly (QSC part number WP-000177-00). 66 Line Filter Assembly (QSC part number WP-000181-00).