PIONEER ELECTRONIC CORPORATION 4-1, Meguro 1-Chome, Meguro-ku, Tokyo 153-8654, JapanPIONEER ELECTRONICS SERVICE INC. P.O.Box 1760, Long Beach, CA 90801-1760 U.S.A.PIONEER ELECTRONIC [EUROPE] N.V. Haven 1087 Keetberglaan 1, 9120 Melsele, BelgiumPIONEER ELECTRONICS ASIACENTRE PTE.LTD. 253 Alexandra Road, #04-01, Singapore 159936C PIONEER ELECTRONIC CORPORATION 1999 K-ZZA. FEB. 1999 Printed in JapanORDER NO.CRT2361BRIDGEABLE POWER AMPLIFIERPRS-X720 X1R/UCServiceManualCONTENTS1. SAFETY INFORMATION ............................................22. EXPLODED VIEWS AND PARTS LIST .......................23. SCHEMATIC DIAGRAM ...........................................104. PCB CONNECTION DIAGRAM ................................285. ELECTRICAL PARTS LIST ........................................406. ADJUSTMENT..........................................................487. GENERAL INFORMATION .......................................497.1 IC .........................................................................497.2 DISASSEMBLY ...................................................508. OPERATIONS AND SPECIFICATIONS.....................51PRS-X320 X1R/UCPRS-X220 X1R/UCPRS-X720/X1R/UCwww . xiaoyu163. comQQ 376315150 992894298TEL 13942296513 992894298051513673QQTEL 13942296513 QQ 376315150 892498299TEL 13942296513 QQ 376315150 892498299http://www.xiaoyu163.comhttp://www.xiaoyu163.com