Schematic for Compal board LA-K891P, 1.41 MB PDF, used in the Lenovo AIO 3-24ALC6 all-in-one according to the related files. Compal applies the LA-xxxxP pattern to boards it builds for brands such as Lenovo. The document helps trace standby and main power rails, the EC, panel power and backlight circuits when an AIO will not start or shows no image. Confirm the board number and revision on the PCB before relying on part values or test voltages.
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 @cynetitsolution. Enginerys does not host this file.
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The standard format for schematics, block diagrams, power-sequence charts and service manuals.