Servicing should only be performed by a Qualified Service Agent
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OPERATION & SERVICE
UIM - User Interface Module
The UIM’s major components include a Circuit Board with LCD display and a Button Pad
Overlay which contains the five user input buttons.
Service Note: The Ribbon Cable that connects the Button Pad Overlay to the UIM Circuit
Board must be plugged in exactly as shown in the images below; with the metal crimp
connections visible on the plug end and the UIM Circuit Board back facing out. There are six
pins on this Ribbon cable socket, Ensure all six pins are inserted into the Ribbon Cable plug
whenever removing or installing the UIM or Button Pad Overlay.
Failure to connect this Ribbon cable exactly as shown when servicing will render the User
Input Buttons inoperable. This should be checked whenever the nature of the service
complaint is an inoperable or unresponsive controller or UIM.
Button Pad Overlay
J2 Socket - CCB
Communication
UIM Circuit Board Back
J3 Socket - Button Pad
Communication
Ribbon Cable To
Button Pad
Ensure Ribbon Cable Plug
is inserted exactly as shown.
UIM Circuit Board Front
LCD
Screen
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