Usually in .brd or a format supported by software like Allegro Free Physical Viewer or BoardViewer. The Schematic: To understand the voltage expectations. Steps for Effective Boardview Work:
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The first stage after the DC jack is the protection circuit. In the search bar, type PQ1 and PQ2 . These are the dual MOSFETs (often AON2408). The BoardView shows you exactly where they sit near the DC jack. Hover over each pad; the software shows the net name (e.g., AD_IN , AD+ , B+ ). Without this, you’d be probing random MOSFETs. Usually in
Open your BoardView software and load the Quanta_T8C.brd file. You will see the green/blue PCB layout. Use the search function (usually Ctrl+F) and type PWR_SRC . The software will highlight the DC-in jack connector (likely J3 or J4). Zoom in. You will see the pinout: pin 1, 2 are positive, pins 3-4 are ground. This link or copies made by others cannot be deleted
Through years of technician documentation, certain faults appear regularly on the 4540s platform. Boardview files make these common fixes straightforward: