04 KEYBOARD ERROR or INTERFACE ERROR & KEYBOARD 無作用, PS2/MOUSE 無作用 A. 8042 (K/B BIOS) 1. 查看K/B Connector有無OPEN or SHORT or 折腳or Connector本身之夾PIN不良 2. 查K/B CLK (8042 PIN 3) 之信號(hào)及相關(guān)之線路,零件有無OPEN or SHORT 3. 查K/B RESET (8042 PIN 4) 之信號(hào)及相關(guān)之線路,零件有無OPEN or SHORT 4. 查CS, IOR, IOW (8042 PIN 6, 8, 10) 之信號(hào)及相關(guān)之線路,零件有無OPEN or SHORT 5. 查SA2 (8042 PIN 9) 之信號(hào)及相關(guān)之線路,零件有無OPEN or SHORT 6. 查K/B Connector之VCC, GND PIN相關(guān)之線路,零件有無OPEN or SHORT 7. 查K/B Connector之KDATA, KCLK PIN相關(guān)之線路,零件 (7406) 有無OPEN or SHORT 8. 查K/B Connector至K/B BIOS之線路及相關(guān)之零件有無OPEN or SHORT 9. 查IRQ1 (8042 PIN 35) 至相關(guān)之CHIP及線路有無OPEN or SHORT 10.查KEYLOCK (8042 PIN 34) 之信號(hào)是否正確有無SHORT 11.查CPU之INTR相關(guān)之線路,零件有無OPEN or SHORT (開機(jī)時(shí)IRQ1在CHECK K/B BIOS后會(huì)由HIGH → LOW, 若按F1 KEY當(dāng)則IRQ1會(huì)由LOW → HIGH) B. K/B BIOS作于CHIP內(nèi) (如W83977, ALI1543, SIS5571, 559X) 1. 參考A項(xiàng)之方法維修 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頻率是否正確 3. 參考該CHIP之DATA SHEET C. PS/MOUSE 無作用 1. 查看PS/MOUSE Connector有無OPEN or SHORT or 折腳or Connector本身之夾PIN不良 2. 查PS2/MOUSE Connector之VCC, GND PIN相關(guān)之線路,零件有無OPEN or SHORT 3. 查PS2/MOUSE Connector之MDATA, MCLK PIN相關(guān)之線路,零件 (7406) 有無OPEN or SHORT 4. 查IRQ12至相關(guān)之CHIP及線路有無OPEN or SHORT 補(bǔ) 充 : 1. K/B Connector若為雙層 (K/B & PS2/MOUSE) 之Connector則須注意如果碰到同時(shí)插上K/B及PS2/MOUSE時(shí)K/B無作用,可能為雙層之Connector內(nèi)部PIN變形與外殼SHORT造成1. CHIP INTEL82371之TEST#（PIN V18）,正確工作電壓為3V,若線路OPEN則造成振蕩器（32.768MHZ）不振蕩 本篇文章發(fā)表于www.intohard.com中國(guó)硬盤基地網(wǎng)