QSC-KSeries-spk-sm 电路图 维修手册.pdf

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1、Product Model: K8, K10, K12, KSub Document #: TD-000487-00 Initial Release: February 2015 Revised Release: Revision: A Service Manual QSC Audio Products, LLC Costa Mesa, California, USA K Series Downloaded from www.M manuals search engine RadioFans.CN 收音机爱 好者资料库 2 QSC Audio Products, LLC Downloaded

2、from www.M manuals search engine RadioFans.CN 收音机爱 好者资料库 3 TD-000487-00 K Series Service Manual Table of Contents 1. Introduction .5 1.1 Restriction of Hazardous Substances Directive (RoHS) .5 1.2 Revision history .5 1.3 Service bulletins .5 1.4 Serial Numbers .5 1.5 The well-equipped service bench

3、.6 2. Product specification and images .7 3. Firmware .8 3.1 Firmware revisions and program numbers .8 3.2 Firmware programming instructions .9 4. Operational description .11 4.1 Series description .11 4.2 Top-Box Models .11 4.3 KSub .12 4.4 Bucket of power (BOP) amplifier module.12 5. Top-box disas

4、sembly instructions .15 5.1 Bucket of power .15 5.2 Front grille .16 5.3 Front baffle .16 5.4 High frequency transducer.17 5.5 Low frequency transducer .18 5.6 Handles, feet, and pole mount .18 6. KSub disassembly and repair procedures .20 6.1 Bucket of power .20 6.2 Low frequency transducers .20 6.

5、3 Handles, threaded pole mount, and casters.21 7. BOP disassembly and repair procedures.23 7.1 Faceplate .23 7.2 PSU/amplifier board .24 7.3 Input/DSP board.25 7.4 Power inlet, power switch, and fan .25 8. Testing .26 8.1 Requirements .26 8.2 Bucket of power testing .26 8.3 Loudspeaker testing .29 9

6、. Troubleshooting guide.31 9.1 General tips and tricks.31 9.2 Line filter - broken components (BOP) .33 9.3 Broken capacitor C45 (BOP) .34 9.4 Input op-amp damage (BOP) .34 9.5 Amplifier section, MOSFET failure (BOP) .35 9.6 Power supply, MOSFET failure (BOP) .36 9.7 Fan behavior.37 9.8 Internal wir

7、ing harness .37 9.9 Front LED .38 9.10 Transducer issues .39 9.11 Broken baffle .40 10. Service updates .41 10.1 Inductor reinforcement, L13 .41 10.2 XLR combo jacks with locking tabs .41 11. Schematics and PCB images .42 11.1 Schematic with notes (all models) .42 11.2 PCB image with notes (all mode

8、ls) .46 12. Component identification .48 12.1 Top-box assembly components .48 12.2 KSub assembly components .49 12.3 BOP components .50 Downloaded from www.M manuals search engine RadioFans.CN 收音机爱 好者资料库 4 QSC Audio Products, LLC QSC Audio Products, LLC Technical Services Group 1665 MacArthur Blvd.

9、Costa Mesa CA 92626 USA K Series Powered Loudspeakers Service Manual Copyright 2014 by QSC Audio Products, LLC. All Rights Reserved. QSC and the QSC logo are trademarks of QSC Audio Products, LLC in the U.S. Patent and Trademark Office and other coun- tries. Patents may apply or be pending. Windows

10、is a registered trademark of Microsoft Corp. Audio Precision is a registered trademark of Audio Precision, Inc. All other trademarks are property of their respective owners. +1 (714) 957-7150 1-800 QSC AUDIO (USA only) +1 (714) 754-6173 (fax) (main web site) (Technical Service Group web site) (parts and accessories sales) 13. Exploded view drawings .52 13.1 K8 exploded view .52 13.2 K10 exploded view .53 13.3 K12 exploded view .54 13.4 KSub exploded view .56 14. Replacement parts .