146 472 National Vendors Snacktron2 Refreshtron2 Software

This manual contains the backup code for the final version 00CA9. It includes the code for both door controller EPROMS. The EPROM model is 2732 with checksums 0005A9FBh and 0006DC8Dh. This manual is useful for both professional mechanics and DIY enthusiasts working on models 146 and 472.