Tractor Sensor Check And Adjustment - InfoPrint 4247 Z03 Maintenance Information

operation. The error occurs when the printer backs up the forms, but does not detect that the paper is back
on the tractor. The printer stops and displays "099 FORMS JAMMED".
2. Load forms into one of the push tractors. The top of the forms should be near the square drive shaft of the
tractor. Do not push the forms into the printer. This would block the paper presence sensor.
3. Press the LOAD/EJECT key. The first form moves into the print area.
Note: If the forms move into the print area, but the top of the forms move past the printhead, and the "001
END OF FORMS" message returns to the display, perform T&D09. The paper presence sensor in that
forms path did not sense the forms.
4. If your printer displays a "099 FORMS JAMMED" message when a paper load is attempted using the
LOAD/EJECT key or under host command, you may have paper already in one of the paths. Remove the
paper; look for debris or chad. Remove all paper debris.
5. If it appears you have paper loaded into a path, press the PARK/PATH key. If the Path message changes to a
different path, perform T&D09. The paper presence sensor in that path does not recognize that forms are
present.
6. Perform T&D09 to reset the path sensor threshold level. This should remove the 099 FORMS JAMMED
message.
Note: If the printer is using a rear and a front path, repeat step 2 and step 3 at the beginning of this service
check.

Tractor sensor check and adjustment

Use this procedure when the printer displays a "002/020 FORMS JAMMED" message that is caused by a forms
tractor sensor.
To verify that the tractor sensor is requesting the message, with the "002/020 FORMS JAMMED" message in the
display, open and close the printer top cover. If the carriage does not move across the print line, investigate the
tractor sensor.
The tractor sensor is located under the black cover on each tractor assembly. When the printer is operating
correctly, a light beam between the transmitter and receiver of the tractor is interrupted by the tractor holes in the
forms, as the forms travel through the tractor.
Chapter 5. Removals, service checks and adjustments
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