What are the specific the motherboard is displaying? (e.g., completely dead, lights turn on but no display, fan loops)
Location: Bottom-right edge, 10-pin (2x5). | Pin | Signal | Function | Wire Color (Typical) | | :--- | :--- | :--- | :--- | | 1 | +5VSB | Standby Power | Purple | | 2 | PWR_BTN# | Power Switch Input | White/Green | | 3 | GND | Ground | Black | | 4 | RESET# | Reset Switch (if used) | Blue | | 5 | HDD_LED+ | HDD Activity (+) | Red | | 6 | HDD_LED- | HDD Activity (-) | Black | | 7 | PWR_LED+ | Power LED (+) | Green | | 8 | PWR_LED- | Power LED (-) | White | | 9 | SPKR+ | Internal Speaker | Orange | | 10 | SPKR- | Internal Speaker | Black | ya-4a194v-0 motherboard schematic
Failure here prevents the laptop from turning on or charging the battery. What are the specific the motherboard is displaying
Finding the exact matching documentation requires precise identification techniques: While this does provide a full electrical schematic
Do not just search for "YA-4A1". Search for "Asus X453MA Schematic" or "Exo E22 Schematic".
Measure pin 8 of the BIOS IC (+3V should be present).
While this does provide a full electrical schematic (netlist, signal traces), it gives the physical locations needed for troubleshooting or part replacement.