User Guide

Chapter 5 Troubleshooting Guidelines

340S8 Rev : A Page

5.6 Keyboard test error (including external K/B & PS/2 mouse)

Symptom: error message of keyboard failure is shown or any key doesn’t work

Keyboard test error

Correct it

Is K/B cable connected to

M/B properly?

Try another good keyboard

KB Test

Ok?

Replace the faulty keyboard

Replace motherboard

Board level troubleshooting

Re-soldering

One of the following parts or signals on the other

board may be defective, use an oscilloscope to check

1.K/B Controller PC87570

Check for cold

solder?

Yes