4026-0XX
Paper Feed Timing
The following describes the timing of paper flow through the printer to aid in diagnosing paper jam problems. Detection of paper in the printer paper feed path is accomplished by the low or high status condition of the paper entry and paper exit sensors. The timing of the paper as it leaves the input paper tray, passes the input sensor, exit sensor and into the exit tray, determines normal paper flow or a paper jam.
Single Sheet Printing: When condition two in the following list is detected and there is no paper in the paper path the printer powers down except for the fuser lamp and fan motor.
Multi Sheet Printing: When condition two in the following list is detected and paper is in the paper path the printer powers down except for the fan motor.
•Both the paper entry and paper exit sensors are activated whenever the printer is turned on or the top cover is closed.
•If the paper does not activate the paper entry sensor in the base printer within two seconds after the
•If the paper entry sensor does not deactivate within eleven sec- onds after the paper leading edge has activated the sensor, a paper jam error occurs.
•If the paper exit sensor is not activated within 3.5 to 4.5 seconds after the leading edge of the paper has activated the paper entry sensor, a paper jam error occurs.
•If the paper exit sensor is not deactivated within 3.4 to 4.7 sec- onds by the trailing edge of the paper, a paper jam error occurs.
