Turns out this was not the manual i was looking for. The concertmate 670 keyboard i have is a "Realistic" model made for Radio Shack and none of the diagrams on the owners manual i received matches up. HOWEVER, I must say the service Owners Manual provides was fast and efficient by being available online. The manual was in good readable condition and easily downloaded.
Thank´s for your help, I already recived these manual from you
Text excerpt from page 17 (click to view)
Removing the hood from the wall unit If, for technical reasons (extraction version/recirculation version conversion) the extractor hood has to be removed from the wall unit, proceed as follows: � Fully withdraw the visor and remove the grease filter. � Loosen the 4 mounting screws of the hood (wall unit mounting). � To loosen both mounting claws (installation aids), place a max 3 mm dia. Phillips screw-driver in the spring opening and simultaneously press the springs inwards (towards the appliance housing). Fig. 14.
Fig. 14 Important: Hold the hood firmly! Adjusting the extractor part (E - Fig. 1) - Fig. 15 On wall units with a body depth of 275 mm to 335 mm, the visor depth can be adjusted as follows: � Remove both grease filters. � Loosen the screws on both end-stop brackets and set the visor depth (min. 275 mm, max. 335 mm). � Refit the screws. � Refit the grease filters.