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GUITAR AMPLIFIERSAR-1500/AR-2500SERVICE MANUAL1005130.1/5300-00AR-2500■CONTENTSSPECIFICATIONS…PANEL LAYOUT.........CIRCUIT BOARD LAYOUT...............2233BLOCK DIAGRAM..DISASSEMBLY PROCEDURE....................................IC BLOCK DIAGRAM…45CIRCUIT BOARD..................6AR-1500 OVERALL CIRCUIT DIAGRAM.......10AR-2500 OVERALL CIRCUIT DIAGRAM............12PARTS LISTLM 011074YAMAHA CORP.HAMAMATSU.JAPAN0.15K-449 Printed in Japan '91.03