Operator Panel Service Check; Paper Present Sensor Service Check; Paper Feed Service Check - Lexmark 2591+ Service Manual

Step FRU
3 Emulation mode

Operator panel service check

If the operator panel is locked, only the Start/Stop, FormFeed, Tear Off, and Load/UnLoad buttons are active.
2500+ printers have a Padlock LED to indicate that the operator panel is locked. To lock or unlock the operator
panel, turn the printer off, and while holding the Load/Unload and Tractor buttons, turn the printer on.
Step FRU
1 Operator panel cable
2 Operator panel

Paper Present sensor service check

Step FRU
1 Paper Present sensor
2 Logic board

Paper feed service check

Note: If paper creases or jams frequently, verify that the paper is neither too thick nor thin. If necessary, refer
the user to the User's Guide for specifications of acceptable papers.
Action
Enter the Setup Menu, and be sure the printer is in the correct emulation mode
for the computer, either IBM or Epson. Go to
Action
Disconnect the operator panel cable from the operator panel and the logic
board, and verify the continuity of the operator panel cable.
Connect the operator panel to the logic board, and be sure +5 V dc is present at
connectors J13-1 and J13-3.
Replace the operator panel cable, or the power cable, as necessary.
If the problem remains, replace the operator panel.
Action
With no paper in the printer, the tractor in the push position, and the Paper
Select lever set to continuous forms, press Load/Unload; the gear train should
turn forward to load paper.
Activate the Paper Present sensor with a screwdriver, and press Load/Unload
again; the gear train should turn backward to park paper.
Measure the voltage between J5-5 (paper present signal) and J5-6 (GND) on
the logic board. There should be 0 V dc when there is paper in the printer, and
+5 V dc when there is no paper in the printer.
• Be sure the Paper Present sensor and its actuator are properly installed and
not damaged.
• If the problem remains, replace the Paper Present sensor.
If the ASF is being used, it is normal for the Paper Out LED not to blink when
there is no paper in the printer. Do the following:
• Enter the Setup Menu.
• Be sure the ASF setting is off, unless the ASF is installed.
• If the Paper Present sensor is good and the ASF setting is on, replace the
logic board and reset the bidirectional print adjustment. Go to
print adjustment" on page
2580+, 2581+, 2590+, 2591+
"Setup mode" on page
4-3.
Diagnostic information
Previous
3-8.
Next
Go Back
"Bidirectional
2-13