04 KEYBOARD ERROR or INTERFACE ERROR & KEYBOARD 无作用, PS2/MOUSE 无作用 A. 8042 (K/B BIOS) 1. 查看K/B Connector有无OPEN or SHORT or 折脚or Connector本身之夹PIN不良 2. 查K/B CLK (8042 PIN 3) 之信号及相关之线路,零件有无OPEN or SHORT 3. 查K/B RESET (8042 PIN 4) 之信号及相关之线路,零件有无OPEN or SHORT 4. 查CS, IOR, IOW (8042 PIN 6, 8, 10) 之信号及相关之线路,零件有无OPEN or SHORT 5. 查SA2 (8042 PIN 9) 之信号及相关之线路,零件有无OPEN or SHORT 6. 查K/B Connector之VCC, GND PIN相关之线路,零件有无OPEN or SHORT 7. 查K/B Connector之KDATA, KCLK PIN相关之线路,零件 (7406) 有无OPEN or SHORT 8. 查K/B Connector至K/B BIOS之线路及相关之零件有无OPEN or SHORT 9. 查IRQ1 (8042 PIN 35) 至相关之CHIP及线路有无OPEN or SHORT 10.查KEYLOCK (8042 PIN 34) 之信号是否正确有无SHORT 11.查CPU之INTR相关之线路,零件有无OPEN or SHORT (开机时IRQ1在CHECK K/B BIOS后会由HIGH → LOW, 若按F1 KEY当则IRQ1会由LOW → HIGH) B. K/B BIOS作于CHIP内 (如W83977, ALI1543, SIS5571, 559X) 1. 参考A项之方法维修 MsoList style="TEXT-JUSTIFY: inter-ideograph; MARGIN: 0cm 0cm 0pt 17pt; TEXT-INDENT: -17pt; TEXT-ALIGN: justify; mso-list: l69 level1 lfo129; tab-stops: list 18.0pt">2. 送至W83977 PIN1之24MHZ频率是否正确 3. 参考该CHIP之DATA SHEET C. PS/MOUSE 无作用 1. 查看PS/MOUSE Connector有无OPEN or SHORT or 折脚or Connector本身之夹PIN不良 2. 查PS2/MOUSE Connector之VCC, GND PIN相关之线路,零件有无OPEN or SHORT 3. 查PS2/MOUSE Connector之MDATA, MCLK PIN相关之线路,零件 (7406) 有无OPEN or SHORT 4. 查IRQ12至相关之CHIP及线路有无OPEN or SHORT 补 充 : 1. K/B Connector若为双层 (K/B & PS2/MOUSE) 之Connector则须注意如果碰到同时插上K/B及PS2/MOUSE时K/B无作用,可能为双层之Connector内部PIN变形与外壳SHORT造成1. CHIP INTEL82371之TEST#（PIN V18）,正确工作电压为3V,若线路OPEN则造成振荡器（32.768MHZ）不振荡 本篇文
