Does anyone know where to get a pdf copy of the schematic / service manual for the Denon DCD-670? I'm thinking about cleaning up the audio path. Maybe just replace a few of the BA15218s with 5532s, but I wouldn't want to do it blind. Looks like there's something on DCD-680 on hifiengine (same service manual AFAICT) but I don't have access. Thanks!
Looks like you might have to buy a printed service manual for that.
https://vintageaudiostore.com/products/denon-dcd-680-dcd-670-cd-player-service-manual-original
https://vintageaudiostore.com/products/denon-dcd-680-dcd-670-cd-player-service-manual-original