Control Panel; Outline; Lcd Processing; Lcd Contras Adjustment - Canon imagerunner C5180 Service Manual

12.1 Control Panel

12.1.1 Outline

The machine's control panel consists of PCBs, LCD, and touch panel as shown below; the control panel is
associated with the following functions:
- LCD indication
- contrast adjustment
- touch switch input
- hard key input
Touch panel

12.1.2 LCD Processing

The CPU on the main controller PCB sends data (display information) to the control panel CPU PCB as
instructed by various programs.
The CPU on the main controller PCB sends data (display information) to the control panel CPU PCB as
instructed by various programs.

12.1.3 LCD Contras Adjustment

The machine is equipped with a dial on its control panel designed for use by the user for adjustment of the LCD
contrast.

12.1.4 Functions of the Control Panel CPU

- Monitoring key inputs (relays the inputs made by keypad keys and function keys to the CPU on the main
controller PCB)
- Controlling the buzzer sound
- Turning on/off thecontrolpanel LEDs
Main controller PCB
LCD
J2
J3
J1015A,J1015B
J511A,J511B
J1114
Control panel CPU PCB
J1112
J1113
J1110,J1111
J1116,J1117
J1119
Control
Keypad PCB
panel
inverter PCB
F-12-1
Chapter 12
12-1