Auto Sheet Feeder (Asf) Service Check - Lexmark 2380 - Forms Printer B/W Dot-matrix Service Manual

Auto Sheet Feeder (ASF) Service Check

Note: Be sure the sheet feeder is enabled. Refer to "Setup Mode"
on page 1-6.
Auto Sheet Feeder Principles of Operation
The auto-sheet feeder (ASF) feeds into the cut sheet paper entry
throat. To use the ASF:
•
The paper select lever must be set to cut sheet.
•
Auto Sheet Feeder must be selected in the Setup menu.
Continuous forms can be used with the ASF installed by moving the
paper select lever to continuous forms and pressing Start to feed the
continuous forms to the first print line.
The ASF contains no electrical parts. It is driven from the gear on
the inside of the printer's right side frame.
The combination lock mechanism is a clutch that causes the ASF
pick rollers to feed only one sheet of paper at a time. When Auto
Sheet Feeder is selected on the Setup Menu, the cut sheet paper
drive reverses itself for a short distance during paper loading. This
reversal engages the clutch and thus engages the paper picker
rollers, which feed the top sheet from the cut sheet paper stack. The
sheet is fed about 5 inches (125 mm) and the paper path briefly
reverses again; this disengages the clutch and the picker rollers. The
sheet is then fed to the print line by the ASF's upper and lower feed
rollers and the printer's lower feed rollers. Although the ASF picker
rollers continue to turn as the paper is fed, their drive is disengaged
and they are actually being turned by the paper.
FRU
1 Paper Select
Sensor
Action
With the paper select lever in the cut sheet
position, do the following:
• Try to load a sheet with Alt+Park/Load.
(This button should not work)
• If the paper loads go to the
Sensor Service Check" on page
Diagnostic Information 2-15
"Paper Select
2-30.