Control Panel; Overview; Lcd Processing; Adjusting The Lcd Screen Contrast - Canon iR C2880 Series Service Manual

10.1 Control Panel

10.1.1 Overview

iR C3380i / iR C3380 / iR C2880i / iR C2880 / iR C3580 / iR C3580i / iR C3080 / iR C3080i
The machine's control panel consists of the following PCBs, LCD, and touch panel, each offering the functions that follow:
- LCD display function
- contrast adjustment
- touch switch input
- hardware key input

10.1.2 LCD Processing

iR C3380i / iR C3380 / iR C2880i / iR C2880 / iR C3580 / iR C3580i / iR C3080 / iR C3080i
The CPU on the main controlled PCB sends data (display data) to the control panel CPU PCB as instructed by the program.
The data is sent through the control panel PCB to reach the color LCD.

10.1.3 Adjusting the LCD Screen Contrast

iR C3380i / iR C3380 / iR C2880i / iR C2880 / iR C3580 / iR C3580i / iR C3080 / iR C3080i
The machine is equipped with a density adjustment volume (VR6801) on its keypad PCB for use by the user to adjust the contrast of the LCD screen.

10.1.4 Control Panel CPU

iR C3380i / iR C3380 / iR C2880i / iR C2880 / iR C3580 / iR C3580i / iR C3080 / iR C3080i
- Monitoring the Key Inputs
It communicates the keypad and function key inputs to the CPU on the main controller PCB.
- Monitoring the Touch Panel Input
It communicates the key inputs made on the touch panel to the CPU on the main controller PCB.
- Controlling the Buzzer Sound
- Controlling the Control Panel LED
MEMO:
The color LCD is driven by the main controller, and the control panel CPU PCB serves to relay the drive signals.

10.2 Counters

10.2.1 Overview
iR C3380i / iR C3380 / iR C2880i / iR C2880 / iR C3580 / iR C3580i / iR C3080 / iR C3080i
The machine is equipped with counters that indicate the counts of output according to types of printers. These counters are indicated in response to a press on the
Check key on the control panel, and they operate as follows (as set at time of shipment from the factory):
Model Counter 1
100V total 1
*1
**
101
Main controller PCB
touch panel
Color LCD
Control panel
Counter 2 Counter 3
total copy
(black-and-white (full color + color+mono
1) mono 1)
108 232
J1015A,J1015B
J2117A,J2117B
J1114
Control panel CPU PCB
J1112
J1113 J1110,J1111
J6891,J6892
J2137
Keypad PCB
Control panel
inverter PCB
F-10-1
T-10-1
Counter 4 Counter 5 Counter 6
total(full not indicated* not indicated*
color1)
149 0
Counter 7 Counter 8
not indicated* not indicated*
0 0 0
Chapter 10
0013-8651
0013-8653
0013-8654
0013-8655
0013-8656
10-1