TWO-SIDED MAINTENANCE DISPLAY SCREEN

A two-sided maintenance display screen comprises a display module (1), a mounting back rack and a fastener. The fastener fixes the display module on the mounting back rack. The fastener is a countersink screw (3). One end of the countersink screw (3) is a cylinder. Tool tightening slots are arranged on both of the end faces of two ends of the countersink screw (3). A direct connection through-hole (2) for containing the countersink screw (3) is arranged in the display module (1). An internal thread through-hole is arranged on the mounting back rack. A blocking piece (6) is arranged on the back face of the display module (1). A blocking piece through-hole is arranged on the blocking piece (6). The diameter of the blocking piece through-hole is less than the diameter of the cylinder. The blocking piece (6) is fixedly connected to the display module (1) via a connecting element. A maintainer can turn on a displayer on the front face of a display screen so as to maintain the displayer, thereby avoiding the assemb