Warning: distributing or using patched (modified) schematic diagrams can violate manufacturer copyrights and may expose you to incorrect or unsafe repair guidance. Use patched schematics only from trusted sources and for legitimate repair, research, or educational purposes.
These convert the 19V adapter input into the lower voltages ( 1.05 cap V ) required by the CPU and RAM. Where to Find Reliable Diagrams hp probook 4430s schematic diagram patched