Printronix L1024, Maintenance Manual

Page: 91 / 372

6–27 Chapter 6 – Paper Feed Subsystem
3. Encoder Board Removal:
a. Remove the TOF Sensor from the Tractor Frame by gently pressing its retaining tabs.
b. Remove 1 Screw from the Encoder Board and carefully slide it free of the Encoder Wheel
so that neither the Wheel nor the Optical Sensors are damaged. The Tractor Cable is
attached to the Encoder Board and must be removed with it. Carefully slide the Cable
Connector free of the Tractor Frame.
See Detail 6–8.
NOTE: Be sure to note the Encoder Board position on the Tractor Frame before
removing it. The Board can be slid back and forth to change its relation to
the Encoder Wheel. This adjustment affects the position of the first line of
print in relation to the page perforation.
See Detail 6–8.
Front of Printer
Rear of Printer
Left Side
of Printer
Detail 6–8. Tractor Encoder Board
c. The TOF Sensor cannot be removed through the cutout in the Tractor Frame as the
Encoder Cable can. Therefore, the TOF Cable must be disconnected from the Encoder
Board before either can be removed from the Tractor.
4. Remove the Encoder Wheel by removing 1 E-ring from the Tractor Drive Shaft and sliding the
Wheel off of the Shaft.
NOTE: Upon installation, the Timing Mark of each Tractor must face up. The
Timing Dot on the Encoder Wheel must also face up and away from the
Tractor Unit. The Flat Face of the Drive Shaft must face toward the rear of
the printer.
See Detail 6–9.