988/989 CPU Socket tester
988/989 CPU Socket tester for Laptop is used to test signals of motherboard, check the open circuit, short circuit of BGA and CPU socket, etc. Instead of traditional complex testing methods, it can test every pins accurately. When changing the BGA Bridge, it can determine the connection of BGA through the LED on the board. It comes with manual for reference.
1.Connect a CR2032 3.2V battery to the CPU tester, and plug to the CPU Socket of the motherboard
2.Press the switch on the upper right corner of the tester,if some LEDs are not lighting,you can check the open circuit and short circuit of BGA and CPU socket.If some LEDs are brighter than others,please check whether the LED is short circuit.
3.Connect the motherboard power supply,check the CLK,RESET#,VCCA by oscilloscope.
This tester fits to I3 I5 I7 Laptop motherboards.