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Monday, October 11, 2010

Service Memo (SM)

Series 2 Touch Screen failure symptoms

We have identified 3 failure symptoms that apply for the Series 2 Displays (MMD) and Panel Computers (MMC) products with factory mounted touch screen.


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HD 12T04 xxxx HD 15T06 xxxx

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HD 19T03 xxxx


APPLIES FOR THE FOLLOWING HATTELAND DISPLAY® PRODUCTS:
HD 12T04 xxxx
HD 15T06 xxxx
HD 19T03 xxxx




DESCRIPTION / SYMPTOM(S) #1:
There is no response from the touch screen, but connecting a regular mouse to the computer will work as expected. If the USB cable is disconnected and reconnected the touch screen will work as expected again.

CAUSE:
The touch controller is sensitive to irregularities in the USB signal which is caused by long, thin, poorly shielded USB cables and/or unpowered USB hubs and repeaters.

SOLUTION:
Use short, thick, well-shielded USB cables and powered USB hubs and repeaters.



DESCRIPTION / SYMPTOM(S) #2:
There is no response from the touch screen, and regular mouse is working unsatisfactory. The touch screen recovers after being placed in a dry environment for some days.

CAUSE:
There is an air-gap in this type of display that can be filled with water if the seal is broken. This will cause the touch screen to malfunction.

SOLUTION:
The touch screen glass has to be replaced at one of our service locations.



DESCRIPTION / SYMPTOM(S) #3:
The touch screen the pointer is always moving to a small area of the screen.

CAUSE:
Extreme exposure to damp heat or humidity may cause buckling of the touch foils making a permanent touch register in a small area of the screen

SOLUTION:
The touch screen glass has to be replaced at one of our service locations.



For further enquiries regarding this Service Memo Notification, please contact Customer Support at Hatteland Display.




Implemented by:
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Leif Grindheim
Vice President Production & Service
Hatteland Display AS
Read and Understood by:
_______________________________________




(Your name and Company)




Hatteland Display AS
囈sosen, N-5578 Nedre Vats, Norway
Tel: (+47) 5276 3700 - Fax: (+47) 5276 5444
www.hatteland-display.com