A fabrication method and a test method for a light emitting display that together produce a pixel portion of the display by fabricating pixel circuits, testing the pixel circuits, and subsequently fabricating light emitting diodes is disclosed. A set of sample values is determined in the device-independent color space. Gate dielectric films 6, 7 are formed, for example, by CVD. The head block includes head sheaves, which redirect the cables to loft sheaves that are selectively attached to the beam. By means of onoff status of the speed-change switch to control the way of electric current passing through the stator module, the torque-rotational speed characteristic curve of the variable speed brushless DC motor is changed, and therefore the rotational speed of the motor is relatively changed.