MiTAC 8050D Benutzerhandbuch
8050
8050
D N/B Maintenance
D N/B Maintenance
116
Keyboard or Touch-Pad
Test Error
Try another known good Keyboard
or Touch-pad.
or Touch-pad.
Test
Ok?
Ok?
Replace the faulty
Keyboard or
Touch-Pad
Keyboard or
Touch-Pad
Yes
No
Check
U16, J4,J5
for cold solder?
Yes
No
Re-soldering
Parts
U16
U715
F701
L716
L36
L37
R132
R151
J4
J5
U715
F701
L716
L36
L37
R132
R151
J4
J5
Signals
VDD3
VDD_AVREF
KBC X+
KBC X-
H8/T_CLK
H8/T_DATA
KI[0:7]
KO[0:15]
PWRBTN#
KBD_US/JP#
VDD_AVREF
KBC X+
KBC X-
H8/T_CLK
H8/T_DATA
KI[0:7]
KO[0:15]
PWRBTN#
KBD_US/JP#
Yes
No
Correct it.
Is K/B or
T/P cable connected to
notebook
properly?
Board-level
Troubleshooting
Replace
Motherboard
Check following parts and signals:
8.6 Keyboard (K/B) /Touch-Pad (T/P) Test Error
Error message of keyboard or touch-pad failure is shown or any key does not work.
MiTac Secret
Confidential Document