Board-level schematic for the HP Compaq CQ40, labelled with the VITAS project name. No board number or revision is given in the file name, so open the title pages and compare the identifier with the code printed on the mainboard before relying on the circuit. The 1.34 MB PDF opens in any reader. It is useful for following the power-up sequence, checking the battery charger and regulators, isolating shorted rails and reading connector pinouts when tracing faults in the display, USB or keyboard sections.
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 (5)
The same file was posted more than once. If one link is dead, try the next.
| Channel | Posted | |
|---|---|---|
| @abgm_manutencao_esquemas | 30 Jul 2019 | Open file on RM Schematics |
| @Satale_bios_esquemas_Laptop | 12 Oct 2022 | Open file on RM Schematics |
| @bartonarquivos | 8 Sept 2023 | Open file on RM Schematics |
| @ShareMan_Electronic_Files | 9 May 2025 | Open file on RM Schematics |
| @cyberlanelectonik | 1 Oct 2026 | Open file on RM Schematics |
How to open a .pdf file
The standard format for schematics, block diagrams, power-sequence charts and service manuals.