Apr. 1, 2015. TDK Corporation has announced that its Hong Kong-based HDD head manufacturing wholly owned subsidiary, SAE Magnetics (H.K.) Ltd.
You use a wrench to screw, or unscrew a bolt. A screwdriver is for screws. Either way you turn it left. Some bolts have reverse threads and would turn the other way to unbolt.
Unscrew the nut holding the ballast to the fixture while holding it in place with your other hand. This is best done with a nut driver or socket wrench. Remove the ballast by lowering the side held by the nut, and sliding it in that direction.