The schematic reveals the DDR3 slot pinout (pins 1-240) and which resistors form the SPD (Serial Presence Detect) I2C bus. No POST with RAM reinsertion often traces to a broken VTT regulator.
: LGA 1155 socket supporting 2nd and 3rd Generation Intel Core i7, i5, i3, Pentium, and Celeron processors. Maximum CPU TDP: : Single-chipset Intel H61 Express. : Two DDR3 DIMM slots supporting dual-channel memory. Frequencies: 1066 / 1333 / 1600 MHz. Maximum Capacity: Power & Protection Schematic Features Voltage Regulation : 2-phase VRM managed by the ISL6363 controller. : 1-phase regulation. : 1-phase regulation managed by the FP6326 controller. Circuit Protection : Features OC/OV/OH Protection
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