Lexmark Z51 Color Jetprinter, Service Manual

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Diagnostic Aids
3-1
4098-001
3. Diagnostic Aids
Auto Compensator Assembly Operation
The auto compensator assembly is a paper pick device that
generates its own normal force which is inherent in the fundamental
design of the pick arm. If light media is used, the auto compensator
assembly picks very gently; if a heavy media is used, it picks very
aggressively.
The spring pressure of the device is designed so the input torque
from the motor causes downward force at the pick roll. The friction
between the pick roll and the paper produces a frictional locking
condition. The arm must pivot freely through its full range of motion.
If the pick assembly is noisy, replace the auto compensator
assembly.