Sorry, but I really don't know!
Hi! Finally i have fix it now it's working really well
As I said, I think there is a problem with the bypass feed clutch which is probably broken and must be replaced.
Hi I share the vedio of My By Pass tray plz watch it and tell why the tray is up and downing continuosly
It looks like to be a mechanical problem (stuck solenoid).
Hi My Printer by pass tray feeding up double or Multiple page the Plate under the paper picking roller is going up and down again and again.