Uniwill 340S2 - Page 60

Chapter 5 Troubleshooting Guidelines
340S2 60 Rev : B
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?
No
Yes
No
Yes
No
Yes