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Lm495 Mb 11269-2 Schematic Download Fixed

Motherboard schematics are copyrighted by Compal Electronics and original laptop brands (Acer, Dell, etc.). They are intended for authorized service centers only. However, for the global independent repair community and right-to-repair advocates, obtaining these documents for personal repair of legally owned devices falls under fair use in many jurisdictions.

We do not host the files directly but provide verified community links. If you represent Acer or Compal and wish to remove links, please contact us – though we encourage releasing schematics officially to reduce e-waste. Lm495 Mb 11269-2 Schematic Download Fixed


| Goal | Recommended Approach | |------|----------------------| | Inspect Power‑Rail Layout | Zoom into Pages 1‑2 – check the ±15 V filter caps (C101‑C104) and the on‑board LDO regulator (U301). | | Adjust Gain | Locate the gain‑setting resistor network (R201‑R204). Changing the resistance ratio will modify the overall gain per the formula:
G = 1 + (R2 / R1) | | Add Anti‑Aliasing Filter | Insert a small RC filter between IN+ / IN‑ and R301 on the schematic. Use a cutoff frequency ½–⅓ of your ADC sampling rate. | | Diagnose Noise Issues | Trace the ground‑plane connections on Page 3. Ensure the star‑ground point at GND‑0 is not shared with high‑current digital traces. | | Create a Custom Footprint | Export the component layout from Page 4 (U301, R201‑R208) into your CAD tool (KiCad, Altium, Eagle) and generate a 2‑layer footprint. | Component list (BOM) PCB netlist & footprints notes


  • Component list (BOM)
  • PCB netlist & footprints notes
  • Testing procedure
  • Known fixes applied
  • Download & file details
  • Optional input filter: Rf: 2.2 kΩ + Cf: 22 nF to implement a low-pass under 7–10 kHz if desired