Lexmark T520 - 20ppm 8MB Par USB Pcl6 Ps3 Ppds Service Manual page 100

4520-xxx
Paper from the high capacity feeder input tray does not reach the
pass thru sensor.
Service Tip: Be sure the paper in tray is within specifications.
FRU
1 Autocompensator
Assembly
2 Wear Strips
The elevator tray does not move up or down. The printer
recognizes that the option is installed.
FRU
1 DC Drive Motor High-
Capacity Feeder Option
System Board
2-72
Service Manual
Action
Check the autocompensator pick
arm rollers for sign of glazing, toner
or other buildup. Replace as
necessary.
Check the wear strips for glazing or
contamination. Replace as required.
It is advisable to replace all four wear
strips at the same time.
Action
Be sure the motor cable is correctly
installed at J1 on the board. Check
the cables, damaged or loose wires.
Disconnect the motor. Check for a
short between each pin and the
motor housing. If a problem is found,
replace the motor assembly. If no
problem is found, measure the
resistance between the following
pins on the motor cable connector:
Pins 1 (brown) and pin 2 (Yellow)
The resistance measures between
approximately 7.5 and 10.5 ohms. If
incorrect, replace the motor
assembly. If correct, replace the high
capacity feeder option system board.