Instruction manual

6–10
Principles of Operation
Control Panel
The user communicates with the printer by pressing keys on the control
panel. The keys are momentary contact switches. The control panel processes
and sends key closure information to the controller board and displays
information from the controller on the LCD. A status lamp next to the LCD
also conveys printer status information to the user.
The LCD, status lamp, and keys are mounted on a printed circuit board
assembly enclosed in a protective housing.
♦ Data
♦ Control
♦ Key (Switch)
Closures
Control Panel
Controller Board
J110
Figure 6–10. Operator Panel Functional Overview