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Sanyo 42LM4RTC User Manual

Page 18

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18

FAULT FINDING GUIDE


The following are some possible reasons why the touch screen might not work. If they do not
solve your problem or you have a situation not covered please contact your supplier.

DRIVER DOES NOT SEE THE TOUCHSCREEN


Touchscreen on a different comm port than the one selected.
The Baud rate is incorrect.
Another device, driver or program is using the port.

TOUCHSCREEN PERFORMS BADLY NEAR THE EDGES OF THE DISPLAY


Metal framework near to the touchscreen may interfere with the touchscreens performance. This
effect can be diminished by increasing the distance between metalwork and the touch sensor or
by coating the metalwork with an insulating paint or plastic coating. The driver can compensate
by utilising the

Edge Enhancement

feature described in this document. The effects of the

framework can be stabilised if it is grounded.

FALSE TOUCHES


If the noise on the system is great, then the

Finger Pressure

indicator may move by small

amounts without the presence of a finger. If the

Press Threshold

is set too low, then the noise

on the system could trigger false touches. This can be remedied by adjusting

Coarse Sensitivity

to a lower level, thus making the system less sensitive.

FAILURE TO SEE TOUCH EFFECT


The default settings for the touchscreen driver are set so that the mouse cursor movement is
disabled during setup. The user must enable this output option by following

Setting the Output

Mode for the Driver.


If the selected option is enabled and touches are still not being registered, then adjustment to the

Press Threshold

is required to ensure the setting is to the left of the

Finger Pressure

indicator,

all over the display area, when a finger is present.

MOUSE MOVEMENT IS NOT SMOOTH


Refer to

Monitor Mode

and the effects of

Inter-Wire Linearity

. Adjustment to the

Press

Threshold

may be required to ensure the setting is to the left of the

Finger Pressure

indicator,

all over the display area, when a finger is present.

CHANGES TO THE DRIVER ARE NOT BEING SAVED


Make sure that after making changes to the setup program that the

Save

command is used, in

the

File

pull down menu. Make sure no other versions of Ma7.ini files exist on the system, this

problem normally occurs when an old Ma7 files exists in a Windows™ main directory.

MOUSE CURSOR MOVES RANDOMLY OR SEEMS STUCK


For the touchscreen to work properly and effectively, it must be provided with a steady
environment, therefore if the monitor is moved, this will upset the system. The driver should reset
itself. However, a reset can be forced.

Alternatively, by pressing

CTRL+ALT+DELETE

, the driver

can be stopped from running and restarted by selecting

File

and

Run Ma7

to restart.

PROBLEMS WITH WINDOWS™ AUTOMATICALLY RUNNING THE DRIVER FROM START-
UP


If it is required to start the driver every time Windows™ is started then a

short-cut

to

Ma7_Driver.exe

can be put in the

Start-Up folder

. The program itself must

NOT

be put into the

Start-Up

menu. If this is done then the driver will place a copy of the Ma7.ini into the start-up

menu and Notepad will open and display the Ma7.ini file information. To correct this problem the
machine must be returned to pre-MA7 driver installation condition.

ALL

MA7 related files must be

removed from the machine including the Start-up Menu and the driver re-installed.

SLOW TOUCH SCREEN RESPONSE WHEN USING POWER HUNGRY APPLICATIONS

This manual is related to the following products: