Chapter 1010-110.1 Control Panel10.1.1 Overview 0014-1311imagePRESS C1 P / imagePRESS C1 / imagePRESS C1+ (Printer) / imagePRESS C1+The control panel of this machine consists of the PCBs, the LCD, and the touch panel described in the figure below.The followings show major functions of this machine:- LCD function- Contrast adjusting function- Touch switch input function- Hard key input functionF-10-110.1.2 LCD Function 0014-2836imagePRESS C1 P / imagePRESS C1 / imagePRESS C1+ (Printer) / imagePRESS C1+The CPU on the main controller PCB gives data (display information) to the CPU PCB of the control panel according to the program.The given data is sent to the color LCD via CPU PCB of the control panel.10.1.3 Contrast Adjusting Function 0014-2837imagePRESS C1 P / imagePRESS C1 / imagePRESS C1+ (Printer) / imagePRESS C1+There is the density adjustment volume (VR6801) on the numeric key PCB so that users can adjust contrast on LCD screen.10.1.4 Function of Control Panel CPU 0014-2838imagePRESS C1 P / imagePRESS C1 / imagePRESS C1+ (Printer) / imagePRESS C1+- Key input monitoringTransmits the numeric key/function key inputs to the CPU on main controller PCB.- Touch panel input monitoringTransmits the key input on touch panel to the CPU on main controller PCB.- Buzzer sound control- Control panel LED activation controlMEMO:The main controller executes the color LCD drive, and the control panel CPU relays the drive signal.10.2 Counters10.2.1 Overview 0014-3721imagePRESS C1 P / imagePRESS C1 / imagePRESS C1+ (Printer) / imagePRESS C1+The device is equipped with counters that count pages according to printer type. The counters can be displayed by pressing the appropriate keys on the control panel.The table below shows the factory settings by region for each counter.CPUMain controller PCBInverter PCBofcontrol panelLCD panel Key PCB ofcontrol panelCPU PCB of control panelCPUControl panel