Canon Printer Feeding Blank Sheets Continuously and Paper Jam Error
Model: CANON LBP 2900 Laser printer
Fault Symptom: Feeding blank sheets continuously and some time getting Paper Jam Error on Computer screen with paper sucking inside the printer.
Received CANON LBP 2900 Laser printer in my workshop for above said fault symptom for repair. As per symptom the probable culprit area is Paper Pick up assembly. I have removed the cartridge for visual inspection because some time you can find ball pen, refills paper clips, eraser rubber band and so on in paper pickup assembly (Mishandling by user and if this is for home use then it sure this creative work done by children’s).
But as I have inspected from toner cartridge location I did not found any suspicious things as stated above. Hence I have decided to dismantle the printer.
First of all I have removed paper pickup pad unit and cleaned the Area with IP.
As per stated the fault symptom, the meaning that it will just keep throwing out blank sheets without stopping the Gear after single page printout command. So this part is handling by Solenoid Unit which gets signal from logic board and it decides where to stop the paper pickup gear after the printing.
So I have removed solenoid unit from the Printer for further inspection.
On removal by visual inspecting the solenoid unit I found some sticky grease like substance is there on Solenoid clutch plate.
So cleaned the surface with wet cotton cloth with IP. So here is the Culprit for above said fault symptom. Solenoids are used to control the timing of the paper feeding.
Just clean the solenoid with IP reassemble everything back and tested by giving print commands from my setup , it works fine without paper jam and not feeding blank sheets continuously.
This article was prepared for you by Yogesh Panchal who works as a Computer Hardware Engineer in Mumbai India.
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