Display interface pages from the Samsung SM-A11 schematic, a PDF of 4.33 MB. They detail the LCD connector pinout, display supply voltages, reset and the high-speed data lanes toward the processor. A technician uses this sheet for no image, lines on screen or a blank display with working backlight, measuring each supply at the connector and checking filters for damage. Opens in any PDF reader; compare the board revision printed on the PCB with the drawing before relying on it.
The button opens the matching file on RM Schematics, or a source page if it is not catalogued there yet. The original attachment is from @phoneSchematics. Enginerys does not host this file.
How to open a .pdf file
The standard format for schematics, block diagrams, power-sequence charts and service manuals.