Foxconn 115xdbp Motherboard Schematic High Quality Jun 2026
The board switches on the memory VRM ( +1.5V_DDR ), followed closely by +VCCIO and +VCCSA .
). Then, use the Boardview file to find its exact physical coordinates on the motherboard.
Attach a logic analyzer or oscilloscope to Pin 2 (Data Output / DO) or Pin 5 (Data Input / DI) .
Once the power button is pressed and the SIO releases the PSON# signal to the power supply, the main rails energize in a strict chronological order: Power Rail Name Target Component Typical Voltage Common Schematic Label RAM Modules & CPU Memory Controller 1.5V (DDR3) / 1.2V (DDR4) +1.5V_DDR / +1.2V_VCCDD PCH Core Platform Controller Hub Core +1.05V_PCH VCCSA System Agent (Inside CPU) 0.85V - 1.05V +VCCSA VCCIO I/O Terminations (Inside CPU) 0.95V - 1.05V +VCCIO VCORE CPU Core Power Variable (0.7V - 1.4V) +VCC_CORE VAXG Integrated Graphics (iGPU) Variable (0.8V - 1.2V) +VCC_GFX 3. Step-by-Step Diagnostic Workflow Using the Schematic
Locate the Nuvoton or ITE Super I/O chip on the schematic. Check the 3VSBSW (Standby Switch) signal to see if the chip detects the power button press. foxconn 115xdbp motherboard schematic
The 115XDBP model name points directly to its socket design. The "115X" indicates compatibility with Intel LGA 1150, 1155, or 1156 sockets. This spans Intel Core i3, i5, and i7 processors from the 1st generation through the 4th generation, depending on the specific chipset revision used.
Supports 2nd and 3rd Generation Intel Core (Sandy Bridge and Ivy Bridge) processors, such as the i3-2120 or Pentium G630T.
Main ATX standby voltage entering from the power supply unit.
A schematic diagram maps out the electrical connections, components, and signal pathways of the printed circuit board (PCB). When analyzing the Foxconn 115XDBP schematic, look for these core sections: The Block Diagram The board switches on the memory VRM ( +1
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+--------------------------------------------------+ | Intel LGA 115x CPU | +-----------------------+--------------------------+ | DDR3/DDR4 Channels | DMI (Direct Media Interface) | +---------------------+ | +-----------------+ | Dual-Channel RAM +--------+--------+ Intel PCH | | (DIMM A / DIMM B) | | (Platform Hub) | +---------------------+ +--------+--------+ | +------------------+--------------------+------------------+ | | | | +--------+--------++--------+--------+ +--------+--------+ +--------+--------+ | Super I/O || Audio Codec | | LAN Controller| | SATA & USB | | (Nuvoton/ITEC) || (Realtek ALC) | | (Realtek/Intel| | Ports | +-----------------++-----------------+ +-----------------+ +-----------------+ The Processor (CPU Node)
The blueprints for the " Foxconn 115xDBP " are often shrouded in mystery because the name actually refers to the (the metal arm and frame) rather than a specific motherboard model. This confusion forms the heart of our story. The Ghost in the Machine
Pay strict attention to suffix letters. A net labeled VCC3 is active during full system operation, whereas VCC3_AUX or VCC3_STB operates whenever the power supply is plugged into the wall. Attach a logic analyzer or oscilloscope to Pin
Measure the voltage at the physical pin; it should read 3.3V.
Symptom 2: Fans Spin for a Second, Then Shut Down (Power Cycling)
Specialized repair communities like Laptop-Schematics or Gadget-Manual sometimes host PDFs for Foxconn boards.