Before you begin
Gather all avaiable documentation
– User’s Manuals
– Data sheets for all the parts on the board
– Understand key parameters (Voltage, Current, Frequency, Impedance…)
– Errata Sheets
– Schematics
– Board Assembly Drawings
– Research applicable Application Notes
– Board layout recommendation
Schematics
Understand the Schematic and how the pins are connected
– Hierarchical or Global Nets Schematics layout