This service manual for the Yamaha DGX-650B and DGX-650WH provides essential technical information for both professional mechanics and DIY enthusiasts. It includes specifications, panel layout, circuit board layout and wiring, block diagram, disassembly procedure, LSI pin description, circuit boards, DM circuit board test method, test program, backup, initialization, system booting flow chart, parts list for DGX-650B/DGX-650WH, parts list for LP-7A/LP-7AWH, and overall circuit diagram.
