AK4186EN-A Datasheet, PDF (13/24 Pages) Asahi Kasei Microsystems – Evaluation board

[AKD4186EN-A]
■ Trouble Shooting
1. Application error is occurred and doesn’t start up
If the operating system is Windows 2000/XP, Please install AKM port driver first.
2. As click [START] button, “DEVICE SEND NAK!” is shown that can not have a measure.
(Can not write control command to AK4186EN.)
Please set the port address to your PC platform environment.
Check the connections of the evaluation board and ensure power up of the AK4186EN.
3. The MEAN, MAX, MIN value doesn't change wherever the pen pushes down on the screen.
There is a possibility of the trouble of the contact of the relay connector that connects the touch screen. Please
open JP3, 4, and 5 on the evaluation board, measure screen seat resistance, and check the resistance. Generally,
the screen seat resistance is hundreds of Ω. There is a possibility that the touch screen is not correctly connected
if the value is over thousands of KΩ. Please connect the relay connector and check the resistance value again.
<KM096300>
- 13 -
2009/2