ITEM NAME:4-Digit Card Pc Analyzer Computer Diagnostic Motherboard Post Tester For Pc G7V4 4-Digit Card Pc Analyzer Computer Diagnostic Motherboard Post Tester For Pc G7V4 CLK: No matter ISA or PCI, as long as there is a empty board (no CPU etc.), the light should be on when power on, otherwise, the CLK signal is failure BIOS: Motherboard running, the light will fash while there is a reading operation on the BIOS. IRDY: The light will flash when having a IRDR signal, otherwise, it will not lignt on. OSC: Empty board.BIOS: Motherboard running, the light will fash while there is a reading operation on the BIOS. RESET: power on or press the RESET switch, the light will be on for half second and then be off.Because,if light is not off,the reset pin on motherboard connected to the acceleration switch or the reset circuit broke down.
