or the motherboard, the bus slot of the test points for the motherboard repair is
| pci slot on the back of map For the motherboard, the bus slot of the test points for theMotherboard RepairThere are three main terms:Test Point 1: Reset signal point (reset), pci slot to provide a reset signal point of each slot in the reset signal point of each other pass, pci slot in the reset signal point is located in pin A15, in the boot will have Low – high-level signal, voltage is usually 3.3v or 5v.Test Point 2: The clock signal points (CLK), pci slot to provide a clock signal point, (the clock frequency 33.333MHZ) all the pci slots motherboard clock signal point-to-ground resistance of the same, but each other pass, pci slot of the clock signal point in the B16 pin, the normal, the clock signal points of the operating voltage of 1.6 v.Test Point 3: voltage signal point, pci slots need four kinds of operating voltage, +5 v, +3.3 v, +12 v,-12v, which +3.3 v for the signal environment voltage, +12 v voltage for peripheral use, testing can be Detection of these pin voltage is normal, if not normal, check the corresponding supply line. |
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