Lexmark P122 Photo Jetprinter Service Manual - Page 33

Diagnostic Aids, Paper Pick Assembly Operation

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4102-P01 3. Diagnostic Aids Paper Pick Assembly Operation The paper pick 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 paper pick 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 produces movement of the arm causing a 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 automatic sheet feeder. Diagnostic Mode To enter the Diagnostic Mode: 1. Use Power button or unplug the power supply from the printer. 2. Press and hold the arrow up button. 3. Plug the power supply into the printer. 4. Release the buttons when Diagnostic Menu appears on the operator panel. Unplug the power supply from the printer to exit the Diagnostic Mode. The tests display on the operator panel in the order shown: • Code Level • LCD • Button • CompactFlash • SmartMedia • SmartMedia Write Protect • DRAM • Access Cover Sensor • End-of-Forms (EOF) Diagnostic Aids 3-1

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Diagnostic Aids
3-1
4102-P01
3.
Diagnostic Aids
Paper Pick Assembly Operation
The paper pick 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 paper pick 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 produces movement of the arm causing a 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 automatic sheet feeder.
Diagnostic Mode
To enter the Diagnostic Mode:
1.
Use Power button or unplug the power supply from the printer.
2.
Press and hold the arrow up button.
3.
Plug the power supply into the printer.
4.
Release the buttons when
Diagnostic Menu
appears on the
operator panel.
Unplug the power supply from the printer to exit the Diagnostic
Mode.
The tests display on the operator panel in the order shown:
•
Code Level
•
LCD
•
Button
•
CompactFlash
•
SmartMedia
•
SmartMedia Write Protect
•
DRAM
•
Access Cover Sensor
•
End-of-Forms (EOF)