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Old 02-11-2018, 03:09 AM   #1
caspian
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Default Tutorial/schematics of Printers/Copiers

Dear Technicians,

Printers and Photocopiers are used by print centers and offices every day. They have to repair/service these devices 2-4 times a year. I heard from a print center owner that the repairman asks a lot of money every time he services their devices.
In general, a printer/copier contains the following main parts:
1- A power board
2- A controller board
3- A number of motors
4- A number of sensors
5- Ink, Cartridge, Ribbon, and so on
6- Body case, paper containers, and covers
7- A few IO ports for communication
8- Fax/scan parts
9- A Keyboard
10- A small display

There is a service manual for every printer/copier that explains most of these parts except for the controller board.
Is there any tutorial on how a controller board works and what components it contains?
Can schematics of controller board be found for any printer/copier?

thanks
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Old 02-13-2018, 11:07 AM   #2
caspian
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Default Re: Tutorial/schematics of Printers/Copiers

up
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Old Today, 06:29 PM   #3
clearchris
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Default Re: Tutorial/schematics of Printers/Copiers

Quote:
Originally Posted by caspian View Post
There is a service manual for every printer/copier that explains most of these parts except for the controller board.
Is there any tutorial on how a controller board works and what components it contains?
Can schematics of controller board be found for any printer/copier?

thanks
A long time ago, I used to repair printers. Yes, service manuals are available, and in most cases, they are actually very good.

I have never seen a schematic for a controller board, and I have to say, the times I have had to replace the controller board is very, very small. Usually, it's the fuser, toner, sometimes motors, but more often bad rubber pickup wheels, d-rollers, etc. Print artifacts can usually be diagnosed with a ruler, especially when they repeat, or just by doing partial print tests.

Learning to rebuild fusers and toners would probably be a good use of time. Controller boards, unless there is a particularly flaky model, probably wouldn't be.
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