About this document
PSR-740/640 Service Manual Guide by robiny2k is a document available to read on EtoBox.
The document is a service manual that provides specifications, diagrams, layouts, procedures and other technical information for repairing and servicing the PSR-740 and PSR-640 digital musical instruments. It includes a block diagram of the PSR-740 that shows the main integrated circuits and their connections. There are also block diagrams for the PSR-640, diagrams of the circuit board layouts, procedures for disassembly and part replacement, descriptions of integrated circuit pins, a circuit board list, a
- Author
- robiny2k
- Language
- EN