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SANSUI AU-317 INTEGRATED STEREO AMPLIFIER SERVICE MANUALINCLUDING BLOCK DIAGRAM SCHEMATIC DIAGRAM PRINTED CIRCUIT BOARDS (PCB'S) AND PARTS LIST 8 PAGES IN ENGLISH........AND WHILE YOU ARE WAITING FOR IT, WHY NOT DOWNLOAD IT RIGHT AWAY ON PDF FROM OUR SITE FOR ONLY A SMALL FEE. VERY USEFUL IF YOU WANT TO ENLARGE A DIAGRAM. JUST GO TO:THEMANUALSSERVICE DOTCOM AND TYPE THE MAKE AND MODEL YOU NEED INTO THE SEARCH BOX.