cpu假负载详细资料（CPU false load details）.docVIP

cpu假负载详细资料（CPU false load details） Detailed information on CPU false load The dummy load is a test used to help CPU powered a tool, its working principle is through the connection of CPU VID0-VID4, VID0-VID4 low power IC control to realize the management of the power supply output size CPU. The use of false load can avoid burning less CPU or burning CPU. The action and use false load: it is mainly used to measure each point CPU and the voltage is normal, CPU really to normal after (thus avoiding the CPU burn during the maintenance of the motherboard). He can also be used to measure the CPU to Beiqiao or other channel 64 data lines and 32 address lines is normal, is an essential tool for motherboard repair. The method and steps of using it: Six detection steps must do it before CPU (the premise is false load, electricity) A false load voltage. The measured core is normal. Two. Test reset [RESET#] on a dummy load is normal. Three. Measuring the false load on the clock is normal. (with an oscilloscope test dummy load on the clock is a wave wave, said normal) Four. Measurement of PG signal voltage on a dummy load is normal. Five. Measuring the false load on the 1V reference voltage is normal. Six. Measuring the core power of the on-board C tube are three wave (with an oscilloscope measurement tube to see if there is a three wave of C. Refer to the core power supply) Note: when the above were normal after can be CPU. The dummy load diagram of various types: 1.P4 478 dummy load (C4.P4) diagram (refer to the 478 front foot bitmap). Core voltage: AF21 position icon VCC map reference voltage 1.75V. Reset: position AB25 icon in the RESET# diagram of voltage reference 1.75V. Clock: AF22 position icon BCLK[0] BCLK[1] figure AF23 reference voltage 1.75V PG signal: AB23 position icon PWRGOOD map reference voltage 1.75V 1V reference: AA21 position map F20 AA6 icon GTLREF F6 reference voltage of 1. V (Note: the four one is 1V, were normal) 64 data lines: B21 D#[0], D#[63] icon posi