Schematic in PDF for the HP ProBook 4440s and 4450s, two 14-inch business notebooks covered by one drawing set. The name does not give a board number, ODM or revision, so compare the board marking against the title block inside the document before relying on it. A schematic like this helps trace power rails from the DC jack through the charger and voltage regulators, check the power-on sequence, and identify the component behind a no-power or no-charge fault. Any PDF reader opens it, and text search helps find net names.
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 @schematicslaptop. Enginerys does not host this file.
All sources (3)
The same file was posted more than once. If one link is dead, try the next.
| Channel | Posted | |
|---|---|---|
| @schematicslaptop | 27 Aug 2023 | Open file on RM Schematics |
| @cyberlanelectonik | 16 Jul 2026 | Open file on RM Schematics |
| @schematics_bios | 14 Aug 2026 | Open file on RM Schematics |
How to open a .rar file
Compressed archive — the usual wrapper for a schematic + boardview pair or a BIOS + EC set.