Service Manual for Technics ST-Z250 tuner (schematics, settings... - what you need to repair a device) It is an ORIGINAL from Technics!!! Good condition! Check out my other items! By all means take me in yours favorites on! Have fun and good luck with the repair!!!   Service Manual for Technics ST-Z250 tuner (schematics, settings... - what you need to repair a device) It is an ORIGINAL from Technics!!! Good condition! Check out my other items! By all means take me in yours favorites on! Have fun and good luck with the repair!!!   Service Manual for Technics ST-Z250 tuner (schematics, settings... - what you need to repair a device) It is an ORIGINAL from Technics!!! Good condition! Check out my other items! By all means take me in yours favorites on! Have fun and good luck with the repair!!!