[. . . ] Avoid using C-120 or longer cassettes (The very thin tape may stretch or break). [. . . ] Avoid using C-120 or longer cassettes (The very thin tape may stretch or break). Clean the head periodically by playing a wet type cleaning cassette in the player. We recommend taking the detachable control panel with you when leaving the car. â· When the release button is pressed and the DCP is unlocked, the car's vibrations may cause it to fall. To prevent damage to the DCP, always store it in a protective case after detaching it. Be careful not to damage it by pressing on it with fingernails, pens, screwdrivers, etc. [. . . ] To prevent damage to the DCP, always store it in a protective case after detaching it. [. . . ]