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DocuColor 12/DCCS50
Overview, User Interface Base PWBA
Reissue
Principles of Operation
Figure 2 User Interface Assemblies Locations
User Interface Base PWBA
The UI Base PWBA contains the logic to control the remaining assemblies in the UI. As shown
in Figure 1, this PWBA includes three microcontrollers:
• a PWBA Microcontroller
• an LCD Display Microcontroller
• a Control Panel/Touch Panel Microcontroller
CONTRAST
CONTROL
PWBA
LCD BACK-
LIGHT POWER
SUPPLY PWBA ANALOG TOUCH PANEL (TOP);
LCD PWBA/DISPLAY;
LCD BACKLIGHT LAMP;
UI BASE PWBA (BOTTOM)
KEYPAD /LED
PWBA
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