: A common ODM platform that carries this marking. How to Use the Schematic for Repair
: Start at the power input to ensure 19V is reaching the first MOSFETs. ya-4a194v-0 motherboard schematic
A motherboard schematic is essential for "chip-level" repair. If your laptop is "dead" or not charging, the schematic helps you trace power rails: : A common ODM platform that carries this marking