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There is a paper high sensor that might not be working . Try to restart the machine with the paper tray open to reset all tray sensors . If that does not work you are probably going to need a tech to make sure all paper sensor are working .
could be a broken or misplaced paper present sensor lever. When the paper tray is loaded and place back into the machine a "paper present sensor" is actuated and sends a signal back to the machines logic. If this sensor is broken or missing, it never sends the signal therefore the machine thinks its out of paper.
hi there shuld be paper inside or may be when u removed jamed paper not proper way some pice of paper struck in the sensor thats why paper jamed lit up clear the whole paper path it will solve problem if not there is any path sensor not working good just clean the path sensors thanks
Take paper draw out of the machine you mite have paper behind the draw preventing sensor monitoring that draw from working properly. Mite get some can air an get any paper dust off the sensor for that draw. Is paper properly installed and are the paper guides securing the paper properly installed? Don't be storing additional paper in the draws. Is paper in the draw matching what is on the operators panel.
''grabber'' roller out of work sometimes, you may try
1) there is a input paper sensor around roller, the roller out of runing if the sensor is not senitive enough or sensor switch dirty,
clean the sensor as you can find it,
2) Lighter-weight paper feeds and prints fine, which means this paper input sensor works ok, but you need to make sure they are same paper input sensor,.
3) the paper surface bright and the roller worn could be cause paper feed fail, you need clean the roller anyway. still not fixed, you need to adjust the roller pressure by increase the spring force.`
there are 4 or 5 sensors through paper road:
1)paper input sensor near input roller
2)margin sensor between input roller and cartridge unit
3)transfer bell sensor between cartridge and fuser unit
4)fusing sensor before fusing
5)out put tray sensor
check all sensors if you can find out and check any paper jam there and check sensor stander at normal position, also check each sensor click ok(the micro switch ok) .
there is any sensor out of work should be showing paper jam.
without knowing the make and model of the printer, it is hard to answer this question.
a paper jam is detected by a printer in one of two ways. Either paper has not reached a sensor in the time it should have, or a sensor is blocked when it should not yet be.
Several things can cause this, one of which would be obvious, in that paper is actually jammed and blocking a sensor that should be open.
Another cause is that paper has not reached a sensor in time. This can be caused when a pickup roller is worn, and not actually pulling paper from the tray, so it sounds like it is working, but there is no paper to print on.
and finally another cause is a broken or malfuntioning sensor. In this case, you will not find any paper blocking a sensor, and is usually an instant failure when the unit is turned on it will automatically error out with a paper jam error. In my experiance, this is usually a broken paper exit flag on the fuser, caused by a paper jam being removed by pulling the paper out of the fuser backwards and breaking the flag.
the 6400 paper present sensor works off the reflection of the paper itself, so if the paper you are using is black on the back the sensor cannot work as there will be no reflection. You need to remove the sensor and rotate it in its housing 90 degres so that it is facing the flag on the paper motion sensor, you may also have to paint this flag white (reflection to work) tipex is ok for this.