MiTAC 8170 User Manual

160

Keyboard or Touch-Pad

Test Error

Try another known good Keyboard 
or Touch-pad.(Internal or external)

Test
Ok?

Replace the faulty 
Keyboard or 
Touch-Pad

Yes

No

Yes

No

Correct it.

Is K/B or

T/P cable connected to 

notebook

properly?

Board-level

Troubleshooting

Replace

Motherboard

One of the following parts or signals on the motherboard
may be defective, use an oscilloscope to check the signals or 
replace the parts one at a time and test after each replacement.

U17    U509
U13    R78
U508  L520
J12     L13
L15    L16
X503  R627
C633  C630
C149  C139
C135  J15

IRQ1

IRQ12

-IOR

-IOW

XD[0:7]

-H8_KBCS

-H8_A20GATE

-H8_MCCS

KO[0:15]

KI[0:7]

T_CLK

T_DATA

XTAL

EXTAL