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N/B Maintenance
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Keyboard or Touch-Pad
Test Error
Try another known good Keyboard
or Touch-pad.
Test
Ok?
Replace the faulty
Keyboard or
Touch-Pad
Yes
No
Check
U16, J501,J18
for cold solder?
Yes
No
Re-soldering
Parts
U16
U20
U14
J501
J18
Q17
Q27
R262
SW502
SW505
SW503
SW504
Signals
+KBC_VDDA
KBD_CS0
+VDD3
KI0..KI7
KO0..KO15
KBC_EXTSMI#
KBC_WAKE_UP#
CLK_KBC
T_DATA
T_CLK
XIN
XOUT
Yes
No
Correct it.
Is K/B or
T/P cable connected to
notebook
properly?
Replace
Motherboard
Check following parts and signals:
L67
L69
R292
RP51
C341
C303
C304
X4
Error message of keyboard or touch-pad failure is shown or any key does not work.
Board-level
Troubleshooting
8.7 Keyboard/Touch Pad Test Error(1)
MiTac Secret
Confidential Document