Schematic for the Topstar S42C board, revision A, in a 1.51 MB PDF. Topstar is a Chinese ODM whose mainboards ship in many white-label laptops, so identify the unit by the S42C code on the PCB. The drawings help trace power rails, locate test points and follow the power-up sequence when diagnosing a dead board. Ensure revision A matches your board, and do not substitute the S42G document, which describes a different variant.
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 @abgm_manutencao_esquemas. Enginerys does not host this file.
All sources (6)
The same file was posted more than once. If one link is dead, try the next.
| Channel | Posted | |
|---|---|---|
| @abgm_manutencao_esquemas | 1 Aug 2019 | Open file on RM Schematics |
| @abgm_manutencao_esquemas | 5 Aug 2019 | Open file on RM Schematics |
| @Satale_bios_esquemas_Laptop | 25 Feb 2021 | Open file on RM Schematics |
| @IT_SERVICE_WORLD | 2 May 2021 | Open file on RM Schematics |
| @ShareMan_Electronic_Files | 5 May 2025 | Open file on RM Schematics |
| @smschematics | 26 Nov 2025 | Open file on RM Schematics |
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