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Mio336i PDA Maintenance
Mio336i PDA Maintenance
8.6 Touch Screen Function Failure
Touch Screen Function is not working property when using Touch Pen on the Touch Screen.
Touch Screen Function Failure
Test
ok?
Try another known good Touch Screen
module and test again.
Replace the faulty Touch Screen
module
Yes
No
No
Yes
Correct it.
Board-level
Troubleshooting
Check the Touch Screen cable is connected property.
Test
ok?
Check the following parts for cold solder or one of the
following parts on the mother-board may be defective, use
an oscilloscope to check the following signal or replace the
parts one at a time and test after each replacement.
Parts
Signals
U1
U34
J12
R541
L9~L12
X3
VCC_AUD
AC97_#RST
AC97_D_IN
CLK_BITCLK
AC97_D_OUT
AC97_SYNC
IRQ_PEN
TSPY
TSPX
TSMY
TSMX
Replace mother board and into
board level troubleshooting.
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