I understand you're looking for detailed features related to the , specifically for repair, flashing, or hardware-level troubleshooting (often tied to “UPD” — possibly referring to update, unlock, or hardware programming).
This is the visual map of the motherboard. It identifies resistors (Rxxxx), capacitors (Cxxxx), diodes, and test points (TPxxxx). If you need to remove a shield can or locate a specific filter near the SIM slot, the component placement page saves hours of guesswork. oppo a15 schematic diagram pdf upd