A METHOD FOR PREVENTING DAMAGE OF SLIM CRT NECK USING ZOOM FUNCTION

摘要

A method for preventing the breakage of a slim CRT(Cathode Ray Tube) neck by using a zoom function is provided to adjust a horizontal and vertical size indicated on a screen by using the zoom function of a remote controller and inform a result to an engineer as a repair sentence on the screen when the adjustment value is greater than a predetermined amplification to allow the engineer to repair a TV. A microcomputer(3) receives a screen adjustment signal of a remote controller(1) having a zoom function for adjusting an amplification of a screen through a remote controller signal receiving unit(2). The microcomputer displays an adjustment picture of the TV screen according to the screen adjustment signal received in the remote controller signal receiving unit. The microcomputer adjusts the on/off timing of a horizontal transistor(5) and adjusts the amplification of the screen. The microcomputer judges whether the adjusted amplification of the screen is greater than a predetermined amplification. If the adjusted amplification is greater than the predetermined amplification, the microcomputer displays a repair sentence on the TV screen.