Yamaha Bass Amplifier, F-20B service manual Contents

Contents BASS AMPLIFIER CONTENTSWARNING CHEMICAL CONTENT NOTICE F-20BIMPORTANT NOTICE IMPORTANT NOTICE FOR THE UNITED KINGDOMPANEL LAYOUT SPECIFICATIONSF-20B CIRCUIT BOARD LAYOUT BLOCK DIAGRAMPOWER AMP POWER TRANSFORMER1.Pre-MainUnit Time required about 2 min DISASSEMBLY PROCEDURE2.Speaker Time required about 2 min F-20BF-20B 4.MAIN 2/2 Circuit Board 5.Power Transformer Time required about 4 minTime required about 3 min F-20B CIRCUIT BOARDS2.Power supply IC BLOCK DIAGRAM3.Inspection procedure INSPECTIONSPARTS LIST CONTENSBASS AMPLIFIER F-20B10 Overall Cabinet Assembly OVERALL ASSEMBLYF-20B 20 Pre-MainUnitDESCRIPTION F-20BREMARKS New partsPRE-MAINUNIT V 6 9 5 4 8 0 0 Chassis F-20BF-20B ELECTRICAL PARTSHF456330 F-20BABCDEFG P.1 OVERALL CIRCUIT DIAGRAMF-20B 5 F-20B