Lac701p Rev 10 Boardview Patched | UHD 2024 |

LAC701P Rev 10 — Boardview Patch Write-up

4. Required Software

To open a patched boardview file, you need compatible viewer software.

• OpenBoardView (Recommended): Open-source, free, and runs on Windows/Linux/Mac. It handles .brd and .bdv files best.
• Lubosoft BoardView: Older Windows software, good for .asc files.
• Zuken BoardView: Used for specific proprietary formats.

2.1 Missing or Mislabeled Nets

In the unpatched versions, important signal nets like +VSB, +3VALW, and EC_RSMRST are either unnamed or incorrectly linked. This forces a technician to guess which pin on a multi-pin IC carries which voltage. lac701p rev 10 boardview patched

Required Software

• OpenBoardView (recommended): Free, open-source, handles “patched” .brd or .fz files well.
• BoardViewer (Classic): Works but may choke on non-standard layer names.
• Allegro Free Physical Viewer: Overkill but can open some CAD-derived variants.

Notes & Recommendations

• Update the pick-and-place and BOM to reflect R123→R128 and U5B→U5A changes.
• Replace F1 with specified vendor footprint to avoid manual rework.
• Update test fixture mapping: TP12→VCC_MAIN, TP18→ADC_REF.
• Consider adding silks for TP18 and critical nets on top layer for easier troubleshooting.

Patching a Boardview File

• Why Patch?: Patching could be necessary for several reasons. Sometimes, the original design might have flaws or areas that can be improved upon. In other cases, components might become obsolete, and a patch would update the design to use a different part. LAC701P Rev 10 — Boardview Patch Write-up 4

• How It's Done: Patching involves modifying the boardview file to reflect changes. This could involve software tools specific to the task, such as Altium Designer, KiCad, or specialized boardview editors. such as Altium Designer