MERIT INDUSTRIES Ion Rx Service Manual download pdf (Page 43)

Troubleshooting Information - Troubleshooting Your Touchscreen

Megatouch Ion Technical Reference Manual

MICROTOUCH:

Features:

- SMT-3 controller in white box

- SMT-4 controller in black box

- USB controller (open-face)

- Green LED on controller lit at half brightness, full brightness when screen is touched

- Overlay functions on capacitance.

- Touchscreen cable is on right side of CRT.

Troubleshooting:

- LED flashing from 1 to 5 times - detected error or possible defective controller

- LED not lit - Check +12Vdc. The touchscreen and/or controller may also be defective.

See Figure 1 for the touchscreen overlay connector schematic.

CALIBRATION:

1. Find the CALIBRATE button on the I/O board or the OSD board inside the CPU section, and

press it to enter the screen calibration mode.

2. Touch the center of the first cross that appears. Once you release your finger, a second

cross will appear.

NOTE: You must hold your finger on the circle for approximately 2 seconds for the calibration

to be recognized.

3. Touch the center of the second cross that appears on the screen.

4. Once the second cross is touched and released, another cross will appear on the screen. To

test the calibration of the screen, touch the cross with your finger and slowly drag your finger

around the screen. The cross should follow your movement.

5. Touch the EXIT button.

If you have enabled high resolution, the game will prompt you to go through the calibration procedure

twice.

6. The game will then prompt you to calibrate the joystick. Move the joystick as far left as it will go,

release the joystick, and then press one of the buttons on the joystick.

NOTE: Your joystick may not appear to be functioning correctly during calibration, but it is

important that you continue the calibration steps. After calibration has been completed, it will

function properly.

7. Move the joystick as far right as it will go, release the joystick, and then press one of the joystick

buttons.

8. Move the joystick as far up as it will go, release the joystick, and then press one of the joystick

buttons.

9. Move the joystick as far down as it will go, then release the joystick and press one of the joystick

buttons.

10. Then, without touching the joystick, press one of the buttons on the joystick to complete calibra-

tion.

11. Touch the EXIT button.

Troubleshooting Your Touchscreen

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