 |
35045 |
 |
424007 |
 |
348713 |
 |
909 |
 |
247380 |
 |
375 |
The Super I/O chip controls fans, ports, and power sequencing. The updated pinouts in the new document help verify if the chip is receiving the correct 3.3V standby voltage—a common point of failure.
This is the most critical section of the schematic for repairs. If the board is "dead" (no power), you must trace the power sequence. For the E93839, look for these stages: e93839 motherboard schematic updated
The updated E93839 motherboard schematic includes several changes and improvements: The Super I/O chip controls fans, ports, and
If you are repairing a Lenovo G570 that refuses to turn on, here is a step-by-step guide using the updated e93839 documentation: The Super I/O chip controls fans