Acer Aspire 4741G schematic in PDF, Wistron-style board number 09920-5, with the HM42 chipset (likely the HM55-class platform variant) stated in the file name.

Schematic for the Acer Aspire 4741G, board number 09920-5 with the HM42-CP designation, provided as a PDF inside a 1.94 MB RAR archive; the SC token most likely marks it…