Schematic for a T43, stored as a 1.14 MB PDF; the suffix _2 in the name suggests a second copy or alternate version, but no board number or revision is stated. Several T43 schematic sets circulate, so checking the title block against the PCB is worthwhile. A technician would use these pages to trace the main power rails, locate the charger and regulator circuits, and follow signals when hunting for a short to ground. Any standard PDF reader will open 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 @alischematics. 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.
Any PDF readerSumatraPDFFirefox / ChromeFlexBV (links PDF to boardview)