Use this checklist:
| Feature | Fake Schematic | ADP200ER Exclusive (Real) | | :--- | :--- | :--- | | PFC Controller | UC3854 | L4981A (Unique pinout 17) | | Standby Voltage | Linear regulator | Flyback via TNY268 | | Overcurrent Protect | Shunt resistor on ground | Current transformer (T3) | | Fan Control | Thermostat switch | PWM speed control via +3.3V | adp200er schematic exclusive
If your schematic lacks the current transformer (T3) on the primary side, you are looking at a generic unit, not the ADP200ER. Use this checklist: | Feature | Fake Schematic
Lenovo’s ThinkStation P720 (and P920) schematics are widely circulated among independent repair shops. On page 47 of the Lenovo P720 Block Diagram Rev 1.2, you will find the exclusive ADP200ER power tree. Unlike other versions, this schematic details the specific power-up sequence delay capacitors (C389, C401) that prevent in-rush current from tripping the hot-swap controller. Search "Application Note ADP200": Search engines often index
If you require the internal schematic for repair or deep-level integration (not just usage), standard datasheets will not provide it because it contains proprietary circuitry.
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