8399 N/B Maintenance

8.7 Keyboard/Touch Pad Test Error(1)

Error message of keyboard or touch-pad failure is shown or any key does not work.

Keyboard or Touch-Pad

Test Error

 

 

 

 

Document

 

 

 

 

 

 

 

Secret

Check

 

Yes

 

 

 

 

 

No

 

 

Re-soldering

 

 

 

 

 

 

U16, J501,J18

 

 

Is K/B or

 

 

 

 

 

for cold solder?

 

 

T/P cable connected to

 

No

 

Board-l vel

 

 

 

 

 

 

 

Correct it.

 

 

 

 

 

 

 

notebook

 

 

 

 

 

 

 

 

 

MiTac

Troubleshooting

 

 

 

 

 

 

properly?

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

ConfidentialReplace the faulty

 

 

 

 

 

Yes

 

J18

 

C341

 

 

 

 

 

 

 

 

Check following parts and signals:

 

Try another known good Keyboard

 

 

 

Parts

 

Signals

or Touch-pad.

 

 

 

 

 

U16

 

L67

+KBC_VDDA

 

 

 

 

Replace

 

 

 

 

 

U20

 

L69

KBD_CS0

 

 

 

Motherboard

U14

 

R292

+VDD3

 

 

 

 

 

 

J501

 

RP51

KI0..KI7

Test

Yes

 

 

 

 

 

 

 

Keyboard or

 

 

 

Q17

 

C303

KO0..KO15

Ok?

 

 

 

 

 

KBC_EXTSMI#

 

Touch-Pad

 

 

 

Q27

 

C304

 

 

 

 

 

 

KBC_WAKE_UP#

 

 

 

 

 

 

R262

 

X4

 

 

 

 

 

 

 

CLK_KBC

 

 

 

 

 

 

SW502

 

 

 

 

 

 

 

 

T_DATA

 

 

 

 

 

 

SW505

 

 

 

 

 

 

 

 

T_CLK

 

No

 

 

 

 

 

SW503

 

 

 

 

 

 

 

 

SW504

 

XIN

 

XOUT

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