[Misc] Canon IR2420

[Engels]

bad copy.jpg
Good day to all!
My canon 2420 output is too poor, it is all black when I photocopy. this is the sample picture. what can be the cause? Please I need help.

[teckat]

Re: Canon IR2420

[ATTACH=CONFIG]26898[/ATTACH]
Good day to all!
My canon 2420 output is too poor, it is all black when I photocopy. this is the sample picture. what can be the cause? Please I need help.

-----------------------------
are u a Tech

Glass Copy ???

check Contact image sensor (CIS)

Uses LEDs for indirect exposure (LED + Photo-conductor)
The original is exposed to light and read using the contact image sensor (CIS) to read the image on a line-by-line basis.

Component------------------Function
LED--------------------Illuminates the original.
Light guide-------------Illuminates the entire image line with the LED light.
Rod lens array----------Collects the light reflected by the original.
CMOS sensor array------Receives the light that passed through the rod lens array.


The flow of analog image processing performed by the contact image sensor (CIS) is as follows:
The light reflected by the original is collected by the rod lens array.
- The light is received by the CMOS sensor array.
- The CMOS sensor array converts the received light to an electric signal and outputs it.
The CMOS sensor array consists of four channels (units).
Each channel is provided with an output correction table to output an image signal after performing gain correction for the input brightness signal.

[Rachid.Akli]

Re: Canon IR2420

Hi to all,

The issue can be in:

1- The CIS.

2- The flat cable (that relates the CIS to the reader controller PCB).

3- The reader controller PCB.

4- The Main Controller PCB.

Good luck.