18EnReference informationOptional accessoriesTTL Remote Cord SC-29/28/17 (1.5m)TTL Remote Cords SC-29/28/17 provide TTL auto flashoperation when the SB-400 is used off-camera. Their flashshoes come with one tripod socket.The SC-29’s AF-assist illuminator cannot be used with theSB-400.Tips on Speedlight careCleaning• Use a blower brush to remove dirt and dust from the Speedlight and clean it witha soft, clean cloth. After using the Speedlight near saltwater, wipe the flash unitwith a soft, clean cloth moistened slightly with tap water to remove the salt, thendry it with a dry cloth.• Do not drop the Speedlight or knock it on a hard surface, as this may damage itsprecision mechanisms.Storage• Store the Speedlight in a cool, dry place to prevent malfunctions due to highhumidity, as well as the growth of mold or mildew.• Keep the Speedlight away from chemicals such as camphor or naphthalene. Avoidexposing the Speedlight to magnetic waves from televisions or radios.• Do not use or leave the Speedlight in locations subject to high temperatures suchas near a heater or stove, as this may cause damage.• When not using the Speedlight for more than two weeks, be sure to remove thebatteries to prevent damage due to battery leakage.WARNINGNever use thinner, benzene, or other active agents for cleaning theSpeedlight, as this may damage the Speedlight or cause it to catch fire.Using these agents may also impair your health.